U.S. RAILROAD RETIREMENT BOARD

OFFICE OF INSPECTOR GENERAL 

Controls over Medicare 

Premium Penalties and Refunds 

Can Be Improved

Report No. 20-07 June 4, 2020
OFFICE OF INSPECTOR GENERAL

U.S. RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be 

Improved

Report Summary June 4, 2020 Report No. 20-07

What We Found

The Railroad Retirement Board (RRB) Railroad Medicare Part B 

premiums and associated penalties were generally calculated 

accurately and premium penalty refunds were issued timely. 

However, Medicare premium penalty and refund authorization 

controls were not effective. We considered the effectiveness of 

the Office of Programs’ (Programs) Medicare premium penalty 

rate study and whether it had improved over time. We 

identified scenarios where Programs did not always adhere to 

its existing procedures or where procedures could be improved 

for calculating and authorizing Medicare premium penalties and 

refunds.

What We Recommend

To address the weaknesses identified in this audit, we made 

eight recommendations related to improving and strengthening 

its controls over the penalty calculation process, the accuracy of 

supporting data, and the policy and procedure and controls 

over the Medicare premium penalty and refund authorization 

process.

RRB management concurred with five recommendations and 

partially concurred with three recommendations. Although the 

agency partially concurred with three recommendations, we 

continue to see the need for our recommendations as stated.

What We Did 

This audit was performed in 

response to concerns with open 

Office of Inspector General audit 

recommendations addressing prior 

Medicare premium penalty rate 

calculation weaknesses first 

reported in March 2009.

The scope of the audit was 

Programs’ Medicare premium 

penalty rate study conducted from 

April 2009 through December 2012

and penalty cases residing in the 

Medicare Part B database, as of 

April 24, 2019.

Our objective was to determine if 

the RRB was calculating monthly 

Medicare Part B premiums with 

associated penalties accurately, 

and was issuing timely and 

appropriate penalty refunds to 

those beneficiaries that were 

assessed a penalty or adjustment 

in error. In order to complete this 

work, we considered laws, 

regulations, guidance and RRB 

policies and procedures related to 

Medicare Part B, tested RRB’s 

compliance with both through 

three statistically valid and four 

nongeneralizable samples, and 

reviewed agency documentation, 

records, and system data. We also 

interviewed applicable agency 

staff.
OFFICE OF INSPECTOR GENERAL – U.S. RAILROAD RETIREMENT BOARD 

 

Contents

INTRODUCTION 1

OBJECTIVES, SCOPE, AND METHODOLOGY 1

BACKGROUND 2

RESULTS OF AUDIT 5

MEDICARE COVERAGE ERRORS IMPACTED PENALTY CALCULATIONS 5

RECOMMENDATIONS 8

MANAGEMENT’S COMMENTS AND OUR RESPONSE 8

MEDICARE PREMIUM PENALTIES AND REFUNDS WERE IMPROPERLY AUTHORIZED 9

RECOMMENDATIONS 11

MANAGEMENT’S COMMENTS AND OUR RESPONSE 12

APPENDIX I: MANAGEMENT COMMENTS 13

APPENDIX II: STATISTICAL SAMPLE METHODOLOGY AND RESULTS POST PENALTY RATE STUDY 

TRANSACTIONS IN THE MOLI DATABASE 17

APPENDIX III: STATISTICAL SAMPLE METHODOLOGY AND RESULTS PENALTY RATE STUDY TRANSACTIONS IN 

THE MOLI DATABASE 19

APPENDIX IV: STATISTICAL SAMPLE METHODOLOGY AND RESULTS PENALTY RATE STUDY TRANSACTIONS IN 

THE MOLI DATABASE 21

APPENDIX V: NONGENERALIZABLE SAMPLE METHODOLOGY AND RESULTS POST PENALTY RATE STUDY 

TRANSACTIONS IN THE MPS DATABASE 23

APPENDIX VI: NONGENERALIZABLE SAMPLE METHODOLOGY AND RESULTS POST PENALTY RATE STUDY 

TRANSACTIONS IN MAMMA DATABASE 25

APPENDIX VII: NONGENERALIZABLE SAMPLE METHODOLOGY AND RESULTS PENALTY RATE STUDY 

TRANSACTIONS IN THE MOLI DATABASE 27

APPENDIX VIII: NONGENERALIZABLE SAMPLE METHODOLOGY AND RESULTS POST PENALTY RATE STUDY 

TRANSACTIONS IN MOLI AND DATA-QDATABASE 29

LIST OF TABLES

TABLE 1. MEDICARE PREMIUM PENALTY AND REFUND TESTING SUMMARY AND RESULTS 5

TABLE 2. MEDICARE PREMIUM PENALTY CALCULATION ERRORS 6

TABLE 3. MEDICARE PREMIUM AUTHORIZATION ERRORS 10
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 1

INTRODUCTION

This report presents the results of the Office of Inspector General’s (OIG) audit report entitled, 

Controls over Medicare Premium Penalties and Refunds Can Be Improved. 

Objectives, Scope, and Methodology

The audit objective was to determine if the Railroad Retirement Board (RRB) was calculating 

monthly Medicare Part B premiums with associated penalties accurately, and was issuing timely 

and appropriate penalty refunds to those beneficiaries that were assessed a penalty or 

adjustment in error.

The scope of the audit was 1) Medicare Part B penalties and associated premium cases, that 

were used in the penalty rate study, conducted by RRB from April 2009 to December 2012, and 

2) penalty rate cases that currently reside as of April 24, 2019 on the Medicare Information 

Recorded, Transmitted, Edited and Logged (MIRTEL) On-Line Inquiry (MOLI) database, i.e., cases 

that were in current deduction or billing status at the time of the query.

To accomplish the audit objective, we 

 identified criteria provided in laws, regulations, and guidance related to the Railroad 

Medicare Part B penalties and associated premiums;

 reviewed agency policies and procedures related to the Railroad Medicare Part B 

penalties and associated premiums;

 reviewed agency documentation, records, and system data related to Railroad Medicare 

Part B penalties and associated premiums, and support in MOLI, Data Query (DATA-Q), 

Medicare Payment System (MPS), Monthly Adjustment of MIRTEL Master (MAMMA),

Universal System Tracking and Reporting (USTAR), and WorkDesk;1

 interviewed applicable agency staff and conducted walkthroughs; and

 tested and analyzed three statistical samples and four nongeneralizable samples to 

verify the accuracy and completeness of the Railroad Medicare Part B penalties and 

 1 At the Railroad Retirement Board (RRB), Medicare Information Recorded, Transmitted, Edited and Logged 

(MIRTEL) records and maintains health insurance information for all eligible Qualified Railroad Retirement 

Beneficiaries (QRRBs) and deemed QRRBs, both aged and disabled. MIRTEL On-Line Inquiry is a system which 

permits direct access to Medicare records for all eligible beneficiaries. Data Query provides an image of the 

monthly generated recurring annuity payments. Medicare Payment System is a system that allows Medicare 

premium refunds to be paid by direct deposit. Monthly Adjustment of MIRTEL Master is used to adjust for changes 

in both the monthly recurring annuity payments and the system records for all eligible beneficiaries. Universal 

System Tracking and Reporting is a database system used to assign and track work and provide details of actions 

taken on a record. Documents in the imaging system are accessed using WorkDesk.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 2

associated premiums, assessed compliance with internal policies and procedures, and 

projected our assessments to the universe (See Appendices II, III, IV, V, VI, VII, and VIII).

We assessed the reliability of Railroad Medicare Part B penalty and associated premium data 

from MOLI, DATA-Q, MPS, and MAMMA by (1) reviewing the data for obvious errors in accuracy 

and completeness; (2) comparing the data to RRB source systems; and (3) making inquiries of 

agency officials knowledgeable about the data. In addition, we traced a sample of transactions 

to source documents and systems.

Our testing methodology also considered the risks inherent with unreliable data and the 

availability of corroborating evidence in the form of source documents as recommended by the 

Government Accountability Office (GAO).2 We determined that the computer processed data 

obtained was sufficiently reliable for testing purposes and do not believe using the data would 

weaken our analysis of the audit objectives or lead to an incorrect or unintentional conclusion 

about our findings, conclusions, or recommendations.

We conducted this performance audit in accordance with generally accepted government 

auditing standards. Those standards require that we plan and perform the audit to obtain 

sufficient, appropriate evidence to provide a reasonable basis for our findings and conclusions 

based on our audit objective. We believe that the evidence obtained provides a reasonable 

basis for our findings and conclusions based on our audit objective.

We conducted our fieldwork at RRB headquarters in Chicago, Illinois from March 2019 through 

March 2020.

Background

The RRB is an independent agency in the executive branch of the federal government. The RRB 

administers the retirement/survivor and unemployment/sickness insurance benefit programs 

for railroad workers and their families under the Railroad Retirement Act and the Railroad 

Unemployment Insurance Act. These programs provide income protection during old age and in 

the event of disability, death, temporary unemployment, or sickness. During fiscal year 2019, 

the RRB paid approximately $13.1 billion in retirement and survivor benefits and $93.2 million 

in unemployment and sickness benefits to approximately 535,000 and 24,000 beneficiaries, 

respectively. 

Railroad Medicare 

In May 1966, the Social Security Administration (SSA) delegated authority to the RRB to 

administer certain provisions of the Medicare program for Qualified Railroad Retirement 

Beneficiaries (QRRBs). These provisions included enrollment, premium collection, and selection 

 2Government Accountability Office (GAO), Assessing the Reliability of Computer-Processed Data, GAO-09-680G

(Washington, D.C.: July 2009).
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Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 3

of a carrier to process Medicare Part B claims. The enactment of Public Law 92-603 in October 

1972 amended the Social Security Act and granted the RRB jurisdiction over all QRRBs that were 

receiving benefits from both RRB and SSA.3

As with Medicare, the Railroad Medicare program provides health insurance to persons ages 65 

and older, as well as persons under 65 who have been entitled to monthly benefits based on 

total disability. In addition to basic Part A hospital insurance financed by payroll taxes, there is 

an elective supplementary Part B medical insurance that covers other non-hospital medical 

services, such as doctor visits, durable medical equipment, and outpatient services. Eligible 

railroad retirement annuitants and social security beneficiaries whose benefits are payable by 

the RRB are automatically enrolled under both plans but have the option to decline Medicare 

Part B. During fiscal year 2019, the RRB automatically enrolled about 24,900 Medicare 

beneficiaries. At the end of fiscal year 2019, approximately 465,500 QRRBs were enrolled in 

Medicare Part A, and approximately 446,300 (96 percent) of these QRRBs were also enrolled in 

Medicare Part B. 

The Railroad Medicare program is managed by one nationwide Medicare contractor, Palmetto 

GBA, which processes the QRRB’s Medicare Part B claims. RRB is responsible for administering 

its contract with Palmetto GBA. In fiscal year 2019, RRB withheld approximately $723 million in 

premiums and Palmetto GBA processed approximately $832 million in payments for services 

covered by Medicare Part B. During fiscal year 2019, CMS reimbursed RRB for approximately 

$32 million for Part B Medicare costs. 

Within the RRB, the Office of Programs (Programs) has 19 claims examiners working at RRB 

headquarters who receive training in Medicare enrollment, premium penalty determination, 

and calculation decisions. As part of the OIG’s oversight responsibilities under the Inspector 

General Act of 1978, as amended, the OIG conducts audits and investigations of alleged fraud, 

waste, and abuse within the Railroad Medicare program. 

Medicare Premiums Penalty Rate Study and Post Penalty Rate Study 

This audit was performed in response to concerns with open OIG audit recommendations 

addressing prior Medicare premium penalty rate calculation weaknesses first reported during 

March 2009.4 Our audit testing and analysis focused on the results of Programs’ study of 

Medicare premium penalty rates conducted from April 2009 through December 2012 and the 

calculations completed as part of the study. We also assessed the effectiveness of Programs’ 

subsequent corrective actions and reviewed post study Medicare premium penalty rate and 

refund calculations. 

Our audit report issued in March 2009 resulted in two recommendations for improvement of 

the Medicare premium control environment. In response to our recommendations, Programs 

 3 42 U.S.C. § 1395s.; and Pub. L. No. 92-603, 86 STAT. Sec. 263 (1972). 4 RRB Office of Inspector General, Fiscal Year 2008 Letter to Management, Report No. 09-02, Recommendations 

No. 12 and No. 13 (Chicago, IL: March 2009).
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 4

conducted the multi-year penalty rate study and submitted audit closure requests in 2011, 

2016, 2017, and 2018. However, upon review of the supporting documentation submitted with 

each closure request, we found that insufficient corrective actions had been taken. Due to the 

complex nature of Medicare premiums and their associated penalties, and the lengthening 

timeframe since our original audit recommendations were made, we determined that an 

indepth audit of Programs' penalty rate study and their current Medicare premiums process, 

was warranted. 

Delayed Medicare enrollment results in a penalty of 10 percent for each year the beneficiary is 

without healthcare coverage and qualifies for Medicare. Evidence of Group Health Plan (GHP) 

coverage during current employment or a State Buy-In (SBI) can reduce the penalty if the 

beneficiary is made aware and provides an employer certification to the RRB. Medicare 

premium penalties can result in excessive financial burden to the beneficiary, further multiplied 

over time. Incorrect penalty calculations were not easily detected by the RRB and have resulted 

in significant refund liabilities. 
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 5

RESULTS OF AUDIT

Our audit determined that Railroad Medicare Part B premiums and associated penalties were 

generally calculated accurately and that premium penalty refunds were issued timely. However, 

Medicare premium penalty and refund authorization controls were not effective. Our audit 

testing and analysis focused on the accuracy of Medicare premium penalty calculations and the 

timeliness and accuracy of premium refunds. We considered the effectiveness of Programs’

Medicare premium penalty rate study and whether it had improved over time. Our analysis 

identified scenarios where Programs did not always adhere to its existing procedures or where 

procedures could be improved for calculating and authorizing Medicare premium penalties and 

refunds.

The results of our Medicare premium, penalty, and refund calculation and authorization 

accuracy sampling and analysis are summarized in Table 1.

Table 1. Medicare Premium Penalty and Refund Testing Summary and Results

Timeframe Sample Method Tested Errors SOR5 Questioned

Costs6

Appendix

Penalty Study - Refund Statistical 54 2 4% $12,266 III

Penalty Study - No Refund Statistical 55 1 2% $778 IV

Penalty Study ≥ 200% Nongeneralizable 14 0 0% $0.00 VII

Post Study < 100% Nongeneralizable 20 0 0% $0.00 VIII

Post Study ≥ 100% Statistical 49 44 90% $14,675 II

Post Study - Refunds MPS Nongeneralizable 9 6 67% $72,336 V

Post Study - Refunds MAMMA Nongeneralizable 9 0 0% $0.00 VI

Note: Penalty study questioned costs are total questioned costs as of the study date and do not reflect monthly recurring post 

study questioned costs. Post study questioned costs reflect estimated monthly recurring questioned costs. The Monthly 

Adjustment of MIRTEL Master Adjusts (MAMMA) generates automated refunds and the Medicare Payment System (MPS) is 

used to generate manual refunds.

We made eight recommendations to address these weaknesses. The full text of management’s 

response to these recommendations is included in this report as Appendix I.

Medicare Coverage Errors Impacted Penalty Calculations

Our testing and analysis of Programs’ Medicare premiums penalty rate study and post study 

penalty transactions identified three penalty rate study errors and one post study calculation 

 5 Sample Occurrence Rate (SOR).

6 For the purpose of these reported findings, the Inspector General Act of 1978, Section 5 (e)(5)(f)(1)(B), states 

that, “the term ‘‘questioned cost’’ means a cost that is questioned by the Office because of— ... (B) a finding that, 

at the time of the audit, such cost is not supported by adequate documentation....”
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 6

error. These procedural calculation errors resulted from failure to timely enroll the beneficiary 

or failure to apply evidence of GHP coverage. We identified the following penalty calculation

errors in Table 2 and requested confirmation from the Medicare examiners.

Table 2. Medicare Premium Penalty Calculation Errors

Timeframe Type of 

Error

Tested Errors SOR Questioned

Costs

Appendix

Penalty Study - Refund Not Timely 230% 10% July 1983 $9,231 III

Penalty Study - Refund GHP 0% 30% July 2006 $3,035 III

Penalty Study - No Refund GHP 30% 80% July 2016 $778 IV

Post Study ≥ 100 % GHP 130% 50% July 2008 $447 II

Note: Penalty study questioned costs are total questioned cost as of the penalty study date and do not reflect monthly 

recurring post study questioned costs. Post study questioned costs reflect estimated monthly questioned costs recurring since

the Part B effective date.

We also identified two additional Medicare premium penalties where GHP coverage had the 

potential to reduce the penalty. While not required by current procedure, the examiner had not 

performed follow-up with the beneficiary to acquire and confirm evidence of the duration of 

the coverage. 

GAO Standards for Internal Control in the Federal Government (GAO Standards) state that:

 Management compares actual performance to planned or expected results throughout 

the organization and analyzes significant differences.7

The RRB’s Medicare processing control techniques require that, “Claim folders, imaged 

documents, CMS records and the Master Benefit Record (MBR) are checked for periods 

excluded from the penalty rate.”

The RRB’s Medicare processing control techniques require that, “Procedures are current, 

accurate and reflect examiner processing.”

The RRB’s claims processing penalty rate guidance states that:

In the case of an individual who was enrolled by a state under a buy-in agreement, 

any months elapsing before the end of his or her last period of buy-in coverage are 

not counted for purposes of the premium increase. Premiums paid by states under a 

buy-in agreement are not subject to increase for late enrollment.

 7 GAO Standards for Internal Control in the Federal Government, GAO-14-704G (Washington, D.C.; 

September 2014).

 
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 7

...Months of GHP coverage are excluded from computation of the surcharge for late 

enrollment. The month will be excluded as a result of an SEP enrollment, GEP 

enrollment, or a current enrollment and the individual is paying a premium at the 

penalty rate. Proof of GHP would reduce the premium penalty.

...For premiums due for June 1986 and later, the following months are 

excluded...Months beginning with January 1983 (or the end of the IEP, if later) during 

which the individual can demonstrate that he or she was enrolled in a GHP based on 

his or her own or a spouse’s current employment status...

Programs had established additional penalty authorization thresholds following its penalty rate 

study. Programs had also established claims examiner training and a worksheet for calculating 

Medicare premium penalties. However, use of the worksheet is not required, had not been 

adapted to consider all coverage decisions, and examiners generally use handwritten notes to 

calculate a penalty that are discarded rather than scanned and maintained on file as 

documented support. As such, fully effective Medicare premium policy and procedure had not 

been developed and adhered to by the examiners. Procedural inconsistencies with examiner 

handling and review of GHP also contributed to the penalty calculation errors. For example, we 

observed one instance where the GHP section of form G-44B, Application for Enrollment in 

Medicare Medical Insurance (Part B), indicating current employment health insurance coverage 

was not properly completed and one instance where the beneficiary failed to indicate on form 

AA-1, Application for Employee Annuity under the RRA, whether they wanted Medicare Part B 

and follow-up had not been performed or recorded by the examiner. Programs had also not 

established a standardized checklist to ensure that premium calculations are performed 

correctly and to ensure that follow-up is performed where needed employment or health plan 

coverage information had not been received. The beneficiary receives notification of their 

penalty on form RL-331, Notice of Change in Health Insurance Election and is instructed to

contact the RRB if questions arise.

The Medicare premium penalty rate process is potentially prone to error as it is highly complex 

and manually intensive. According to RRB officials, given the limitations of time and resources, 

Medicare examiners effectively have only about 10 to 15 minutes to consider numerous 

Medicare coverage factors and to calculate and document an often highly complex Medicare 

premium penalty. Medicare examiners have encountered delays in obtaining supporting 

records and system support. Systems are sometimes slow to respond during processing and 

supporting data is not always accurate or maintained. While the calculation process has 

become more complex, there has been no improvement in automation. We did not identify a 

corrective action plan and efforts were not in place to minimize the penalty errors. Staff 

attrition is also impacting the calculation knowledge base and the record and experience of past 

penalty calculations is being lost.

If proper procedures and best practices are not established, Medicare premium and penalty 

calculation errors may occur. The duration of the undetected penalty error may impact 

premium restitution as the beneficiary might be deceased when the error is discovered, making 

collection of premiums due or a refund difficult or impossible.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 8

Recommendations

We recommend that the Office of Programs strengthen its controls over the penalty calculation 

process and the accuracy of supporting data by:

1. designing, implementing, and maintaining a comprehensive Medicare premium penalty 

rate calculation worksheet addressing each enrollment and health plan coverage option, 

including disability enrollment, required for use in documenting the preparation and 

second review of penalty rates of 10 percent or greater;

2. establishing a procedure to capture and maintain claims examiner decisions and 

explanations, including relevant supporting documentation and screen prints with each 

penalty rate calculation worksheet to enable timely recollection and understanding of 

the penalty rate decision and calculation;

3. establishing a procedure to track and/or log the notification of penalty and other 

beneficiary communication, and record the follow-up efforts made when a response to 

agency requests for employment and/or health plan coverage verification have not 

been received or are in error;

4. reevaluating the claims examiner staffing resources needed for the current Medicare 

premium penalty workload;

5. evaluating the impact of planned system modernization efforts to determine if greater 

automation or other improvements can be made to the penalty rate calculation process; 

and

6. updating the RL-331, Notice of Change in Health Insurance Election to include a penalty 

calculation summary that explains how and why the penalty was calculated and includes 

the applicable calculation and decision elements, such as the dates of employment, GHP 

coverage period, SBI, Income Related Monthly Adjustment Amount, birthdate, 

retirement date, penalty period start and end dates, and the total monthly premium to 

enable the beneficiary to understand the reason for the penalty decision and how it was 

calculated, along with instruction on how to inquire when the beneficiary identifies a 

possible error.

Management’s Comments and Our Response

The Office of Programs concurred with Recommendations 1, 2, 3, and 5. 

For Recommendation 4, the Office of Program partially concurred with our recommendation 

and stated, “The Office of Programs regularly reviews staffing needs for the entire organization 

and not just for the Medicare unit. In fact, hiring plans are prepared on an annual basis for EC 

and Board approval. Many factors contribute to the decision making process and agency 

funding is one major consideration.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 9

Specifically with regard to UPSD/MPSS/Medicare, we continuously look at work processes, 

examiner workloads, and expectations. Requests for additional staffing are made as needed. 

We will continue our practice of evaluating staffing needs in light of current and projected 

workloads and requests permission to hire as needed.” While the Office of Programs only 

partially concurred, they provided a reasonable basis for reevaluating the staffing resources 

needed. However, our finding and recommendation remain as written.

For Recommendation 6, the Office of Program partially concurred with our recommendation 

and stated, “The RRB currently provides the beneficiary the reason for the penalty. We will take 

action to modify the current notification to include the period(s) of months used to calculate 

the penalty percentage. We will not be including the beneficiary’s retirement date or IRMAA 

rate because it is not a factor in determining penalty rates. In addition, we will not be including 

historical information on SBI, EGHP coverage period, or birthdate on file as those factors are 

already considered by examiners in determining the period(s) of months used to calculate the 

penalty percentage. We anticipate the implementation of this recommendation by 

January 31, 2021.” 

The beneficiary’s Medicare eligibility date, SBI, GHP coverage period, and birthdate are used in 

the determination of penalty rates and/or refunds. The beneficiary’s retirement date and 

IRMAA rate are factors in determining Medicare eligibility and the monthly premium amount. 

Notifying the beneficiary that this information is used in the determination of penalty rates 

and/or refunds increases transparency and conveys the need for accurate data. Our finding and 

recommendation remain as written.

Medicare Premium Penalties and Refunds Were Improperly Authorized

During our testing and analysis of Medicare premiums and refunds, we identified transactions 

that were improperly authorized or where authorization was not adequately documented in 

the RRB’s records. These transactions required evidence of authorization because the penalties

exceeded 100 percent of the premium, or the refunds exceeded $1,000 and required special 

authorization. An error was defined as a transaction where one or more authorization 

elements, including the Medicare Part B penalty worksheet, Universal STAR (USTAR), or 

form G-364M authorization record were missing, did not include evidence of appropriate 

second authorization, or the examiner’s or authorizer’s name, date, and signature were not 

recorded.8 We also found that penalties under 100 percent of the premium, and refunds 

under $1,000 are not subject to review or second authorization.

USTAR authorization provides electronic tracking and is required for all Medicare penalties and 

refunds. USTAR does not provide the penalty calculation detail needed to validate the 

transaction. If adequately detailed, the penalty worksheet can provide the supporting 

calculation and documentation to enable review of the penalty calculation prior to 

 8 Form G-364 is used to authorize Medicare premium refunds. The penalty worksheet is used to document the 

penalty percentage calculation and total premium amount.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 10

authorization. Form G-364M provides the supporting calculation and documentation to enable 

review of the penalty refund. If the penalty worksheet or G-364M is not properly documented 

and reviewed, USTAR authorization would be performed blindly negating control effectiveness. 

Both USTAR and the supporting penalty worksheet or G-364M are needed for proper 

authorization. We identified the following authorization errors and requested confirmation 

from the Medicare examiners.

Table 3. Medicare Premium Authorization Errors

Timeframe Sample Method Tested Errors SOR Questioned

Costs

Appendix

Penalty Study - Refund Statistical 54 N/A N/A N/A III

Penalty Study - No Refund Statistical 55 N/A N/A N/A IV

Post Study ≥100% Statistical 49 44 90% $14,675 II

Penalty Study ≥ 200% Nongeneralizable 9 0 0% $0.00 VII

Post Study - MPS Refunds Nongeneralizable 9 6 67% $72,336 V

Post Study - MAMMA Refunds Nongeneralizable 9 0 0% $0.00 VI

Post Study < 100% Nongeneralizable 20 N/A N/A N/A VIII

Note: Penalty study questioned costs are total questioned costs as of the penalty study date and do not reflect monthly 

recurring post study questioned costs. Post study questioned costs reflect estimated monthly questioned costs recurring since

the Part B effective date. MAMMA generates automated refunds and MPS is used to generate manual refunds.

In addition, the RRB performs management control reviews of the Medicare assessable unit 

every five years that include the effectiveness of management authorizations of penalties 

exceeding 100 percent. Our analysis found that the reviewed transactions included 

authorization errors but these errors had not been reported in the results of the 2018 review. 

The 2012 review results had been purged and could not be reviewed.

GAO Standards state that

 ...Management divides or segregates key duties and responsibilities among different 

people to reduce the risk of error, misuse, or fraud....

 Management clearly documents internal control and all transactions and other 

significant events in a manner that allows the documentation to be readily available for 

examination....

 Transactions are authorized and executed only by persons acting within the scope of 

their authority.
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Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 11

The RRB’s Management Control Guide states that, “Transactions and other significant events 

are to be authorized and executed only by persons acting within the scope of their authority”

and management control reviews of Medicare assessable unit control techniques are to be 

performed “every 5 years.”9

The RRB’s Medicare processing control techniques require that, “All cases with a penalty rate 

over 100% are authorized.”

The RRB’s Medicare processing control techniques require that, “To assure quality and prevent 

theft of benefits, some work is reviewed (authorized) by another person. 

Premium refunds of $1,000 and over (second authorization if amount is more than $5,000).”

RRB’s Medicare processing procedures require form G-364M for refunds but do not require 

completion of the Medicare penalty rate worksheet. 

The RRB’s Medicare processing control techniques require that, “All initial and file-only 

Medicare items, including premium refund awards, are imaged.”

Programs has not implemented effective controls for authorizing all Medicare penalties and 

refunds and ensuring secondary review of the elements supporting authorization and their 

proper recordkeeping. Without proper review and authorization, the accuracy of Medicare 

premium and refund transactions cannot be ensured. Further, when a beneficiary calls in or 

requests a change, the examiner may need to recalculate the penalty requiring additional time 

and resources. 

Recommendations

We recommend that the Office of Programs strengthen its policy and procedure and controls 

over the Medicare premium penalty and refund authorization process by:

7. establishing a penalty and refund review process to include both the standard form 

worksheet and USTAR tracking. The worksheet and supporting calculation and 

documentation should be reviewed, authorized, and dated by a second claims examiner 

and/or supervisor (if over 100 percent) on the worksheet, and tracked within USTAR. 

The review authorization should attest to the accuracy and completeness of the penalty 

or refund calculation, electronic filing of supporting documents, and beneficiary 

notification and confirmation; and

8. strengthening the management control review process over Medicare premium penalty 

and refund authorizations by determining the reasons for the undetected errors 

identified during the audit and modifying the review process as needed to improve the 

detection and reporting of similar future errors.

 9 RRB, Management Control Guide (Chicago, IL: February 2015).
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 12

Management’s Comments and Our Response

The Office of Programs concurred with Recommendation 7. 

For Recommendation 8, the Office of Program partially concurred with our recommendation 

and stated, “Beginning in the FY 2021 Medicare certification, the Office of Programs will include 

information to address the actions taken to review and validate penalty rate review actions. In 

addition, the Medicare examiner quality review will include Medicare premium penalties and 

refunds. We anticipate the implementation of this recommendation by the end of September 

2021.” While the Office of Programs only partially concurred with our recommendation, their 

planned actions are directed toward addressing the recommendation. However, our finding 

and recommendation remain as written.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 13

APPENDIX I: MANAGEMENT COMMENTS
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 14
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 15
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 16
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 17

APPENDIX II: STATISTICAL SAMPLE METHODOLOGY AND RESULTS POST 

PENALTY RATE STUDY TRANSACTIONS IN THE MOLI DATABASE

This appendix presents the methodology and results for the sample conducted of Railroad

Medicare Part B penalties and associated premium cases in the Medicare Information 

Recorded, Transmitted, Edited and Logged (MIRTEL) On-Line Inquiry (MOLI) database. 

Sampling Objective

Our sampling objectives were to (1) verify the accuracy and completeness of Medicare Part B 

penalties and associated premium cases, (2) assess compliance with laws, regulations, and 

guidance, and (3) assess compliance with internal policies and procedures.

Scope

Our sample was selected from Medicare Part B penalties and associated premium cases in the 

MOLI database as of April 24, 2019. 

Universe/Sampling Unit

The sampling universe consisted of 147 Medicare Part B beneficiaries with penalties of 

100 percent and greater and associated premium cases in the MOLI database as of 

April 24, 2019. The sampling unit was one Medicare Part B penalty and associated premium

case.

Sample Selection Methodology

We used Two Step Attribute Acceptance Sampling using a confidence level of 90 percent and a 

critical error rate of 10.2 percent, which directed a sample size of 26 cases of Medicare Part B 

penalties and associated premiums for the first step, and 23 cases of Medicare Part B penalties 

and associated premiums for the second step (for a total of 49 records if the first step failed). If 

one or more errors were discovered as a result of tests for the first step, second step testing 

would be required. The threshold for acceptance after second step testing was two errors. 

Therefore, if zero errors existed in our first step or if after the second step, two or fewer errors 

were identified, we would infer with 90 percent confidence that the Medicare Part B penalties 

and associated premiums have been accurately calculated and reported as documented by 

RRB, and are in compliance with applicable requirements and standards. 

Sample Evaluation Methodology

For each transaction, we obtained and reviewed evidence from various agency mainframe 

systems including WorkDesk and Universal System Tracking and Reporting in order to 

accomplish our sampling objectives.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 18

Results of Review

Our reviews resulted in the following errors, as identified by attribute. 

Sample Results - Post Study (100 Percent or Greater)

Attribute Tests Number of 

Records Tested Errors

Penalty case was found in MOLI, and penalty calculation was for the 

right beneficiary.

49 0

Beneficiary did accept Part B. 49 0

Penalty calculation was mathematically correct. 49 1*

Penalty assessment did consider GHP present in folder 49 0

GHP form was valid or acceptable. 49 0

Correct enrollment period was used during calculation. 49 0

IRMAA was applied during premium calculation. 49 0

Variable rate was applied to qualified beneficiary. 49 0

Cases with penalty rate over 100% were manually calculated and 

authorized.

49 3*

Penalty refund to beneficiary was accurate. 49 0

Penalty refund was issued to the right beneficiary. 49 0

Penalty refund was confirmed received by beneficiary. 49 0

Penalty refund timely. 49 0

There were no duplicate refund on the beneficiary account. 49 0

There were no duplicate deduction from the beneficiary account. 49 0

Refund of $1,000 or greater, was authorized & authorizer was 

appropriate.

49 0

Refund of $5,000 or greater, was authorized & 2nd authorizer was 

appropriate.

49 0

RRB, SSA or State (for SBI) did not collect premiums for the same 

month.

49 0

Premium refund awards was entered on the imaging system. 49 0

Transaction was supported by documentation. 49 44*

Transaction was accurate based on documentation. 49 0

 Total Number of Errors 48

*Multiple errors occurred for the tested records and the total number of transactions with errors is 44.

Auditor’s Conclusion

Our evaluation of the statistically valid sample of 49 Medicare Part B premium data identified 1 

penalty calculation error, 3 over 100 percent penalty authorization errors, and 44 supporting 

documentation errors. As a result, we conclude that the RRB may not be calculating and 

authorizing monthly Medicare Part B premiums with associated penalties accurately and are 

not in compliance with applicable standards. Since the total errors in the sample is more than 

the threshold of 2 errors, this sampling universe is rejected.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 19

APPENDIX III: STATISTICAL SAMPLE METHODOLOGY AND RESULTS

PENALTY RATE STUDY TRANSACTIONS IN THE MOLI DATABASE

This appendix presents the methodology and results for the sample of Railroad Medicare Part B 

penalties and associated premium cases that were used in the penalty rate study, conducted by 

RRB. 

Sampling Objective

Our sampling objectives were to (1) verify the accuracy and completeness of Medicare Part B 

penalties and associated refund cases during penalty rate study, (2) assess compliance with 

laws, regulations, and guidance, and (3) assess compliance with internal policies and 

procedures. 

Scope

Our sample was selected from Medicare Part B penalties and associated premium refund cases 

reviewed during the RRB’s penalty rate study from April 2009 to December 2012.

Universe/Sampling Unit

The sampling universe consisted of 912 Medicare Part B beneficiary penalties and associated 

premium cases with refunds reviewed during the penalty rate study. The sampling unit was one

Medicare Part B penalty and associated premium case.

Sample Selection Methodology

We used Two Step Attribute Acceptance Sampling using a confidence level of 90 percent and a 

critical error rate of 10 percent, which directed a sample size of 29 cases of Medicare Part B 

penalties and associated premium for the first step, and 25 cases of Medicare Part B penalties 

and associated premium for the second step (for a total of 54 records if the first step failed). If 

one or more errors were discovered as a result of tests for the first step, second step testing 

would be required. The threshold for acceptance after second step testing was two errors. 

Therefore, if zero errors existed in our first step or if after the second step, two or fewer errors 

were identified, we would infer with 90 percent confidence that the Medicare Part B penalties 

and associated premium have been accurately calculated and reported as documented by RRB, 

and are in compliance with applicable requirements and standards.

Sample Evaluation Methodology

For each transaction, we obtained and reviewed evidence from various agency mainframe 

systems including WorkDesk, and Universal System Tracking and Reporting in order to 

accomplish our sampling objectives.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 20

Results of Review

Our reviews resulted in the following errors, as identified by attribute. 

Sample Results - Penalty Rate Study (Refunds) 

Attribute Tests Number of 

Records Tested

Errors

Penalty case was found in MOLI, and penalty calculation was for the 

right beneficiary.

54 0

Beneficiary did accept Part B. 54 0

Penalty calculation was mathematically correct. 54 2

Penalty assessment did consider GHP present in folder 54 0

GHP form was valid or acceptable. 54 0

Correct enrollment period was used during calculation. 54 0

IRMAA was applied during premium calculation. 54 0

Variable rate was applied to qualified beneficiary. 54 0

Cases with penalty rate over 100% were manually calculated and 

authorized.

54 0

Penalty refund to beneficiary was accurate. 54 0

Penalty refund was issued to the right beneficiary. 54 0

Penalty refund was confirmed received by beneficiary. 54 0

Penalty refund timely. 54 0

There were no duplicate refund on the beneficiary account. 54 0

There were no duplicate deduction from the beneficiary account. 54 0

Refund of $1,000 or greater, was authorized & authorizer was 

appropriate.

54 0

Refund of $5,000 or greater, was authorized & 2nd authorizer was 

appropriate.

54 0

RRB, SSA or State (for SBI) did not collect premiums for the same 

month.

54 0

Premium refund awards was entered on the imaging system. 54 0

Transaction was supported by documentation. 54 0

Transaction was accurate based on documentation. 54 0

 Total Number of Errors 2

Auditor’s Conclusion

Our evaluation of the statistically valid sample of 54 Medicare Part B premium data identified 2 

penalty calculation errors. As a result, we conclude that the RRB generally calculated monthly 

Medicare Part B premiums with associated penalties accurately.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 21

APPENDIX IV: STATISTICAL SAMPLE METHODOLOGY AND RESULTS 

PENALTY RATE STUDY TRANSACTIONS IN THE MOLI DATABASE 

This appendix presents the methodology and results for the sample of Railroad Medicare Part B 

penalties and associated premium cases that were used in the penalty rate study, conducted by 

RRB. 

Sampling Objective 

Our sampling objectives were to (1) verify the accuracy and completeness of Medicare Part B 

penalties and associated refund cases during penalty rate study, (2) assess compliance with 

laws, regulations, and guidance, and (3) assess compliance with internal policies and 

procedures. 

Scope 

Our sample was selected from Medicare Part B penalties and associated premium refund cases 

reviewed during the RRB’s penalty rate study from April 2009 to December 2012. 

Universe/Sampling Unit

The sampling universe consisted of 3,073 Medicare Part B penalties and associated premium 

cases with no refunds reviewed during the penalty rate study. The sampling unit was one 

Medicare Part B penalty and associated premium case. 

Sample Selection Methodology 

We used Two Step Attribute Acceptance Sampling using a confidence level of 90 percent and a 

critical error rate of 10 percent, which directed a sample size of 29 cases of Medicare Part B 

penalties and associated premiums for the first step, and 26 cases of Medicare Part B penalties 

and associated premiums for the second step (for a total of 55 records if the first step failed). If 

one or more errors were discovered as a result of tests for the first step, second step testing 

would be required. The threshold for acceptance after second step testing was two errors. 

Therefore, if zero errors existed in our first step or if after the second step, two or fewer errors 

were identified, we would infer with 90 percent confidence that the Medicare Part B penalties 

and associated premiums have been accurately calculated and reported as documented by 

RRB, and are in compliance with applicable requirements and standards. 

Sample Evaluation Methodology 

For each transaction, we obtained and reviewed evidence from various agency mainframe 

systems including WorkDesk and Universal System Tracking and Reporting in order to 

accomplish our sampling objectives.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 22

Results of Review 

Our reviews resulted in the following errors, as identified by attribute. 

Sample Results - Penalty Rate Study (No Refunds)

Attribute Tests Number of 

Records Tested Errors

Penalty case was found in MOLI, and penalty calculation was for the 

right beneficiary.

55 0

Beneficiary did accept Part B. 55 0

Penalty calculation was mathematically correct. 55 1

Penalty assessment did consider GHP present in folder 55 0

GHP form was valid or acceptable. 55 0

Correct enrollment period was used during calculation. 55 0

IRMAA was applied during premium calculation. 55 0

Variable rate was applied to qualified beneficiary. 55 0

Cases with penalty rate over 100% were manually calculated and 

authorized.

55 0

Penalty refund to beneficiary was accurate. 55 0

Penalty refund was issued to the right beneficiary. 55 0

Penalty refund was confirmed received by beneficiary. 55 0

Penalty refund timely. 55 0

There were no duplicate refund on the beneficiary account. 55 0

There were no duplicate deduction from the beneficiary account. 55 0

Refund of $1,000 or greater, was authorized & authorizer was 

appropriate.

55 0

Refund of $5,000 or greater, was authorized & 2nd authorizer was 

appropriate.

55 0

RRB, SSA or State (for SBI) did not collect premiums for the same 

month.

55 0

Premium refund awards was entered on the imaging system. 55 0

Transaction was supported by documentation. 55 0

Transaction was accurate based on documentation. 55 0

Total Number of Errors 1

Auditor’s Conclusion 

Our evaluation of the statistically valid sample of 55 Medicare Part B premium data identified 1 

penalty calculation error. As a result, we conclude that the RRB generally calculated monthly 

Medicare Part B premiums with associated penalties accurately.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 23

APPENDIX V: NONGENERALIZABLE SAMPLE METHODOLOGY AND RESULTS 

POST PENALTY RATE STUDY TRANSACTIONS IN THE MPS DATABASE 

This appendix presents the methodology and results for the sample of Railroad Medicare Part B 

penalties and associated premium and refund cases in the Medicare Payment System (MPS) 

database. 

Sampling Objective 

Our sampling objectives were to (1) verify the accuracy and completeness of Medicare Part B 

penalties and associated refund cases occurring after the penalty rate study concluded in 2012, 

(2) assess compliance with laws, regulations, and guidance, and (3) assess compliance with 

internal policies and procedures. 

Scope 

Our sample was selected from Medicare Part B penalties and associated premium refund cases 

in the MPS database for years 2017, 2018, and 2019. 

Universe/Sampling Unit 

The sampling universe consisted of 8,405 Medicare Part B penalties and associated premium 

cases with refunds occurring after the RRB’s penalty rate study. The sampling unit was one 

Medicare Part B penalty and associated premium refund case. 

Sample Selection Methodology 

We used nongeneralizable sampling to test compliance for refund controls and integrity of 

procedures. Therefore, the results of the sample are not intended to be used for sample 

acceptance, rejection, or projection. Our testing examined for each year, paid voucher refunds 

for three beneficiaries with a Supplemental Medical Insurance for the Aged fund code and the 

highest dollar refund amount for years 2017, 2018, and 2019. We selected three beneficiaries 

each year and reviewed a total of nine cases for the three years. 

Sample Evaluation Methodology 

For each transaction, we obtained and reviewed evidence from various agency mainframe 

systems including WorkDesk, MPS, and Universal System Tracking and Reporting in order to 

accomplish our sampling objectives.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 24

Results of Review 

Our reviews resulted in the following errors, as identified by attribute. 

Sample Results - Post Study MPS Premium Refunds

Attribute Tests Number of 

Records Tested Errors

Penalty case was found in MOLI, and penalty calculation was for the 

right beneficiary.

9 0

Beneficiary did accept Part B. 9 0

Penalty calculation was mathematically correct. 9 0

Penalty assessment did consider GHP present in folder 9 0

GHP form was valid or acceptable. 9 0

Correct enrollment period was used during calculation. 9 0

IRMAA was applied during premium calculation. 9 0

Variable rate was applied to qualified beneficiary. 9 0

Cases with penalty rate over 100% were manually calculated and 

authorized.

9 0

Penalty refund to beneficiary was accurate. 9 0

Penalty refund was issued to the right beneficiary. 9 0

Penalty refund was confirmed received by beneficiary. 9 0

Penalty refund timely. 9 0

There were no duplicate refund on the beneficiary account. 9 0

There were no duplicate deduction from the beneficiary account. 9 0

Refund of $1,000 or greater, was authorized & authorizer was 

appropriate.

9 0

Refund of $5,000 or greater, was authorized & 2nd authorizer was 

appropriate.

9 6

RRB, SSA or State (for SBI) did not collect premiums for the same 

month.

9 0

Premium refund awards was entered on the imaging system. 9 0

Transaction was supported by documentation. 9 0

Transaction was accurate based on documentation. 9 1

Total Number of Errors 7

Auditor’s Conclusion 

Our evaluation of the nongeneralizable sample of nine Medicare Part B MPS premium refund 

transactions identified six over $5,000 authorization errors and one inaccurate documentation 

error. As a result, we conclude that the RRB’s MPS premium refund controls and procedures 

could be improved. However, the nongeneralizable sample results are not intended for sample 

projection.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 25

APPENDIX VI: NONGENERALIZABLE SAMPLE METHODOLOGY AND RESULTS 

POST PENALTY RATE STUDY TRANSACTIONS IN MAMMA DATABASE 

This appendix presents the methodology and results for the sample of Railroad Medicare Part B 

penalties and associated premium and refund cases in the Monthly Adjustment of MIRTEL 

Master (MAMMA) database. 

Sampling Objective 

Our sampling objectives were to (1) verify the accuracy and completeness of Medicare Part B 

penalties and associated refund cases occurring after the RRB’s penalty rate study concluded in 

2012, (2) assess compliance with laws, regulations, and guidance, and (3) assess compliance 

with internal policies and procedures. 

Scope 

Our sample was selected from Medicare Part B penalties and associated premium refund cases 

in the MAMMA database for years 2017, 2018, and 2019. 

Universe/Sampling Unit 

The sampling universe consisted of 522 Medicare Part B penalties and associated premium 

cases with no refunds occurring after the RRB’s penalty rate study. The sampling unit was one 

Medicare Part B penalty and associated premium case. 

Sample Selection Methodology

We used nongeneralizable sampling to test compliance for refund controls and integrity of 

procedures. Therefore, the results of the sample are not intended to be used for sample 

acceptance, rejection, or projection. Our testing examined paid voucher refunds for three 

beneficiaries with the highest dollar refund amount for March/May 2017, March/April 2018, 

and 2019. We selected three beneficiaries each year and reviewed a total of nine cases for the 

three years. 

Sample Evaluation Methodology 

For each transaction, we obtained and reviewed evidence from various agency mainframe 

systems including WorkDesk, MAMMA, and Universal System Tracking and Reporting in order 

to accomplish our sampling objectives.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 26

Results of Review 

Our reviews resulted in the following errors, as identified by attribute. 

Sample Results - Post Study MAMMA Premium Refunds

Attribute Tests Number of 

Records Tested Errors

Penalty case was found in MOLI, and penalty calculation was for the 

right beneficiary.

9 0

Beneficiary did accept Part B. 9 0

Penalty calculation was mathematically correct. 9 0

Penalty assessment did consider GHP present in folder 9 0

GHP form was valid or acceptable. 9 0

Correct enrollment period was used during calculation. 9 0

IRMAA was applied during premium calculation. 9 0

Variable rate was applied to qualified beneficiary. 9 0

Cases with penalty rate over 100% were manually calculated and 

authorized.

9 0

Penalty refund to beneficiary was accurate. 9 0

Penalty refund was issued to the right beneficiary. 9 0

Penalty refund was confirmed received by beneficiary. 9 0

Penalty refund timely. 9 0

There were no duplicate refund on the beneficiary account. 9 0

There were no duplicate deduction from the beneficiary account. 9 0

Refund of $1,000 or greater, was authorized & authorizer was 

appropriate.

9 0

Refund of $5,000 or greater, was authorized & 2nd authorizer was 

appropriate.

9 0

RRB, SSA or State (for SBI) did not collect premiums for the same 

month.

9 0

Premium refund awards was entered on the imaging system. 9 0

Transaction was supported by documentation. 9 0

Transaction was accurate based on documentation. 9 0

Total Number of Errors 0

Auditor’s Conclusion 

Our evaluation of the nongeneralizable sample of nine Medicare Part B MAMMA premium

refunds did not identify any errors. As a result, we conclude that the RRB processed the 

MAMMA premium refunds properly. However, the nongeneralizable sample results are not 

intended for sample projection.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 27

APPENDIX VII: NONGENERALIZABLE SAMPLE METHODOLOGY AND RESULTS 

PENALTY RATE STUDY TRANSACTIONS IN THE MOLI DATABASE 

This appendix presents the methodology and results for the sample of Railroad Medicare Part B 

penalties and associated premium and refund cases that were used in the penalty rate study, 

conducted by RRB. 

Sampling Objective 

Our sampling objectives were to (1) verify the accuracy and completeness of Medicare Part B 

penalties and associated refund cases included in the RRB’s penalty rate study that concluded 

in 2012, (2) assess compliance with laws, regulations, and guidance, and (3) assess compliance 

with internal policies and procedures. 

Scope 

Our sample was selected from 200 percent and greater Medicare Part B penalties and 

associated premium cases that were recalculated during the RRB’s penalty rate study from 

April 2009 to December 2012. 

Universe/Sampling Unit 

The sampling universe consisted of 18 Medicare Part B penalties and associated premium cases 

with penalties of 200 percent or greater reviewed by the RRB during the penalty rate study. The 

sampling unit was one Medicare Part B penalty and associated premium case. 

Sample Selection Methodology 

We used nongeneralizable sampling to test compliance for refund controls and integrity of 

procedures. Therefore, the results of the sample are not intended to be used for sample 

acceptance, rejection, or projection. Our testing examined seven cases by recalculating the 

penalty for three beneficiaries where the study reported a reduction in the penalty percentage 

but not in the premium amount, and by recalculating the penalty for four beneficiaries with the 

most line items in the penalty determination. We also reviewed all nine paid voucher refunds to 

confirm that the refunds were accurate and were received by the correct beneficiary. The cases 

reviewed totaled 14, because 2 cases overlapped. 

Sample Evaluation Methodology 

For each transaction, we obtained and reviewed evidence from various agency mainframe 

systems including WorkDesk, and Universal System Tracking and Reporting in order to 

accomplish our sampling objectives.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 28

Results of Review

Our reviews resulted in the following errors, as identified by attribute.

Sample Results - Penalty Rate Study 200 Percent or Greater 

Attribute Tests Number of 

Records Tested Errors

Penalty case was found in MOLI, and penalty calculation was for the 

right beneficiary.

14 0

Beneficiary did accept Part B. 14 0

Penalty calculation was mathematically correct. 14 0

Penalty assessment did consider GHP present in folder 14 0

GHP form was valid or acceptable. 14 0

Correct enrollment period was used during calculation. 14 0

IRMAA was applied during premium calculation. 14 0

Variable rate was applied to qualified beneficiary. 14 0

Cases with penalty rate over 100% were manually calculated and 

authorized.

14 0

Penalty refund to beneficiary was accurate. 14 0

Penalty refund was issued to the right beneficiary. 14 0

Penalty refund was confirmed received by beneficiary. 14 0

Penalty refund timely. 14 0

There were no duplicate refund on the beneficiary account. 14 0

There were no duplicate deduction from the beneficiary account. 14 0

Refund of $1,000 or greater, was authorized & authorizer was 

appropriate.

14 0

Refund of $5,000 or greater, was authorized & 2nd authorizer was 

appropriate.

14 0

RRB, SSA or State (for SBI) did not collect premiums for the same 

month.

14 0

Premium refund awards was entered on the imaging system. 14 0

Transaction was supported by documentation. 14 0

Transaction was not accurate based on documentation. 14 0

Total Number of Errors 0

Auditor’s Conclusion 

Our evaluation of the nongeneralizable sample of 14 Medicare Part B premium cases with 

penalties of 200 percent or greater identified no errors. As a result, we conclude that the RRB 

processed the penalty determinations and refunds properly. However, the nongeneralizable 

sample results are not intended for sample projection.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 29

APPENDIX VIII: NONGENERALIZABLE SAMPLE METHODOLOGY AND 

RESULTS POST PENALTY RATE STUDY TRANSACTIONS IN MOLI AND 

DATA-Q DATABASE 

This appendix presents the methodology and results for the sample of Railroad Medicare Part B 

penalties and associated premium cases in the Medicare Information Recorded, Transmitted, 

Edited and Logged (MIRTEL) On-Line Inquiry (MOLI) and Data Query (DATA-Q) databases. 

Sampling Objective

Our sampling objectives were to (1) verify the accuracy and completeness of Medicare Part B 

premium penalties and associated premium refund cases occurring after the RRB’s penalty rate 

study concluded in 2012, and (2) assess compliance with laws, regulations, and guidance, and 

(3) assess compliance with internal policies and procedures. 

Scope 

Our sample was selected from Medicare Part B penalties and associated premium cases in 

MOLI and Data-Q data pulled from production on November 15, 2019. 

Universe/Sampling Unit 

The sampling universe consisted of combined MOLI and DATA-Q data for 3,450 beneficiaries 

with a Medicare Part B penalty in either the Current, Prior 1, Prior 2 or Prior 3 MOLI history 

segments. 

Sample Selection Methodology 

We used nongeneralizable sampling to test compliance for penalty determination controls and 

integrity of procedures. Therefore, the result of the sample is not intended to be used for 

sample acceptance, rejection, or projection. Our testing examined ten aged and ten disabled 

beneficiaries with a penalty rate of 100 percent or lower and with the greatest variation from 

our initial calculation. We selected and reviewed a total of 20 premium cases. 

Sample Evaluation Methodology 

For each transaction, we obtained and reviewed evidence from various agency mainframe 

systems and WorkDesk, MOLI, and DATA-Q in order to accomplish our sampling objectives.
OFFICE OF INSPECTOR GENERAL - RAILROAD RETIREMENT BOARD

Controls over Medicare Premium Penalties and Refunds Can Be Improved - Report No. 20-07 30

Results of Review

Our reviews resulted in the following errors, as identified by attribute.

Sample Results - Post Study Penalties of 100 Percent or Lower 

Attribute Tests Number of 

Records Tested Errors

Penalty case was found in MOLI, and penalty calculation was for the 

right beneficiary.

20 0

Beneficiary did accept Part B. 20 0

Penalty calculation was mathematically correct. 20 0

Penalty assessment did consider GHP present in folder 20 0

GHP form was valid or acceptable. 20 0

Correct enrollment period was used during calculation. 20 0

IRMAA was applied during premium calculation. 20 0

Variable rate was applied to qualified beneficiary. 20 0

Cases with penalty rate over 100% were manually calculated and 

authorized.

20 0

Penalty refund to beneficiary was accurate. 20 0

Penalty refund was issued to the right beneficiary. 20 0

Penalty refund was confirmed received by beneficiary. 20 0

Penalty refund timely. 20 0

There were no duplicate refund on the beneficiary account. 20 0

There were no duplicate deduction from the beneficiary account. 20 0

Refund of $1,000 or greater, was authorized & authorizer was 

appropriate.

20 0

Refund of $5,000 or greater, was authorized & 2nd authorizer was 

appropriate.

20 0

RRB, SSA or State (for SBI) did not collect premiums for the same 

month.

20 0

Premium refund awards was entered on the imaging system. 20 0

Transaction was supported by documentation. 20 0

Transaction was accurate based on documentation. 20 0

Total Number of Errors 0

Auditor’s Conclusion 

Our evaluation of the nongeneralizable sample of 20 Medicare Part B premium cases with a 

penalty of 100 percent or lower, did not identify any premium calculation and or refund errors. 

As a result, we conclude that the RRB processed the penalty determinations and calculations 

properly. However, the nongeneralizable sample results are not intended for sample projection.