**Agency for Healthcare Research and Quality**

**Prevention Quality Indicators (PQIs)**

**Log of Revisions to PQI Documentation and Software**

Updated March 16, 2007

The following table summarizes all of the revisions made to the PQI
software, software documentation, and the Guide to Prevention Quality
Indicators (Guide) document since the original release of these
documents in November 2001. The table lists the version and revision
number, the date the revision was made, the component affected by the
change and a short summary of the changes that were made. For
convenience and ease of use, the changes are listed in reverse
chronological order with the most recent changes appearing first in the
table. This log of revisions is current as of the date noted above.

+-------+--------+-----------+----------------------------------------+
| ***Ve | ***D   | ***Com    | ***Changes***                          |
| rsion | ate*** | ponent*** |                                        |
| /Rev  |        |           |                                        |
| ision |        |           |                                        |
| numb  |        |           |                                        |
| er*** |        |           |                                        |
+=======+========+===========+========================================+
| V3.1a | March  | SAS       | Amended the aggregation algorithm to   |
|       | 16,    | Software  | correctly sum the numerator and        |
|       | 2007   | (PQSASA2) | denominator counts across stratifiers. |
+-------+--------+-----------+----------------------------------------+
| V3.1  | March  | Software  | 1.  Implemented changes associated     |
|       | 12,    | (SAS and  |     with ICD-9-CM coding updates for   |
|       | 2007   | Windows), |     Fiscal Year (FY) 2007 (effective   |
|       |        | Software  |     10-1-2006). See separate           |
|       |        | Docum     |     documentation on ICD-9 coding      |
|       |        | entation, |     updates for specific details.      |
|       |        | Guide,    |                                        |
|       |        | and       | 2.  The years for which the ICD-9-CM   |
|       |        | Technical |     and DRG codes defining PQIs are    |
|       |        | Speci     |     valid was amended to be through FY |
|       |        | fications |     2007 instead of FY 2006, that is,  |
|       |        |           |     the codes in the software are      |
|       |        |           |     effective through September 30,    |
|       |        |           |     2007.                              |
+-------+--------+-----------+----------------------------------------+
| V3.1  | March  | Co        | Based on recommendations of the Risk   |
|       | 12,    | variates. | Adjustment and Hierarchical Modeling   |
|       | 2007   | Software  | (RAHM) Workgroup, computed covariates  |
|       |        | (SAS and  | using a logistic regression model with |
|       |        | Windows)  | an area random-effect instead of the   |
|       |        |           | existing simple logistic model.        |
|       |        |           | Because the AHRQ QI use a "large       |
|       |        |           | sample", the impact on the covariates  |
|       |        |           | of using the hierarchical model (and   |
|       |        |           | hence the impact on the risk-adjusted  |
|       |        |           | rates) is minor..                      |
+-------+--------+-----------+----------------------------------------+
| V3.1  | March  | Software  | Updated the coefficients used in the   |
|       | 12,    | (SAS and  | calculation of expected and            |
|       | 2007   | Windows), | risk-adjusted rates to the 2002-2004   |
|       |        | Software  | reference population.                  |
|       |        | Docu      |                                        |
|       |        | mentation |                                        |
|       |        | and       |                                        |
|       |        | C         |                                        |
|       |        | ovariates |                                        |
|       |        | document  |                                        |
+-------+--------+-----------+----------------------------------------+
| V3.1  | March  | Technical | Moved list of ICD-9-CM codes for       |
|       | 12,    | Speci     | cardiac procedure into an Appendix,    |
|       | 2007   | fications | with links to and from the PQIs that   |
|       |        |           | use the codes as a numerator           |
|       |        |           | exclusion.                             |
+-------+--------+-----------+----------------------------------------+
| V3.1  | March  | Guide     | Moved average volume, provider rates,  |
|       | 12,    |           | and population rates into separate     |
|       | 2007   |           | document, *Prevention Quality          |
|       |        |           | Indicators Comparative Data*           |
+-------+--------+-----------+----------------------------------------+
| V3.1  | March  | Software  | 1.  Age-, race-, gender- and           |
|       | 12,    | (SAS and  |     county-specific population         |
|       | 2007   | Windows)  |     estimates used for AHRQ QI area    |
|       |        |           |     rates were updated to use revised  |
|       |        |           |     post-censal estimates for years    |
|       |        |           |     2001 through 2005 and projections  |
|       |        |           |     for the years 2006 and 2007.       |
|       |        |           |                                        |
|       |        |           | 2.  Modified the A3 syntax to compute  |
|       |        |           |     risk-adjusted rates and            |
|       |        |           |     observed-to-expected ratios for    |
|       |        |           |     the pre-defined set of             |
|       |        |           |     stratification variables (e.g.,    |
|       |        |           |     age, gender, payer, race)          |
|       |        |           |                                        |
|       |        |           | 3.  Added option to select whether or  |
|       |        |           |     not to apply county-level          |
|       |        |           |     adjustment for Socioeconomic       |
|       |        |           |     Status (SES) and/or disease        |
|       |        |           |     prevalence in addition to age and  |
|       |        |           |     gender.                            |
+-------+--------+-----------+----------------------------------------+
| V3.0b | May 1, | Technical | 1.  Revised denominator description    |
|       | 2006   | Speci     |     for PQI #9.                        |
|       |        | fications |                                        |
|       |        |           | 2.  Deleted codes 59000 and 59001 from |
|       |        |           |     numerator of PQI #10.              |
|       |        |           |                                        |
|       |        |           | 3.  Corrected code numbers in          |
|       |        |           |     denominator of PQI #13.            |
+-------+--------+-----------+----------------------------------------+
| V3.0b | May 1, | All       | Edited PDF files to make URLs in       |
|       | 2006   | documents | header or footnotes clickable links.   |
+-------+--------+-----------+----------------------------------------+
| V3.0a | Fe     | Guide,    | 1.  Removed Appendices that were       |
|       | bruary | SAS and   |     copies of Change Log and Indicator |
|       | 20,    | SPSS      |     Changes documents.                 |
|       | 2006   | Software  |                                        |
|       |        | Docu      | 2.  Added Appendix of Links to all PQI |
|       |        | mentation |     documents and additional           |
|       |        |           |     resources.                         |
+-------+--------+-----------+----------------------------------------+
| V3.0a | Fe     | Guide     | 1.  Added explanation of changes to    |
|       | bruary |           |     area definitions and new           |
|       | 20,    |           |     stratification options.            |
|       | 2006   |           |                                        |
|       |        |           | 2.  Changed \"MSA\" to \"Metro Area\"  |
|       |        |           |     throughout the document.           |
|       |        |           |                                        |
|       |        |           | ```{=html}                             |
|       |        |           | <!-- -->                               |
|       |        |           | ```                                    |
|       |        |           | 3.  Added section \"Using Different    |
|       |        |           |     Types of QI rates.\"               |
+-------+--------+-----------+----------------------------------------+
| V3.0a | Fe     | Software, | 1.  Revised denominator of PQI #9 (Low |
|       | bruary | Guide,    |     Birth Weight) to define newborn as |
|       | 20,    | and       |     neonate with age at admission of 0 |
|       | 2006   | Technical |     to 28 days, with ICD-9-CM          |
|       |        | Speci     |     diagnosis code for in-hospital     |
|       |        | fications |     live birth.                        |
|       |        |           |                                        |
|       |        |           | 2.  Revised numerator of PQI #12       |
|       |        |           |     (Urinary Tract Infection) to Add   |
|       |        |           |     exclusion for any diagnosis code   |
|       |        |           |     of kidney/urinary tract disorder   |
|       |        |           |     and for any diagnosis code of      |
|       |        |           |     immunocompromised state.           |
|       |        |           |                                        |
|       |        |           | 3.  Revised numerator of PQI #15       |
|       |        |           |     (Asthma) to Add exclusion for any  |
|       |        |           |     diagnosis code of cystic fibrosis  |
|       |        |           |     and anomalies of the respiratory   |
|       |        |           |     system.                            |
+-------+--------+-----------+----------------------------------------+
| V3.0a | Fe     | Software  | 1.  Changed name of data element       |
|       | bruary | (SAS and  |     HOSPSTCO to PSTCO.                 |
|       | 20,    | SPSS)     |                                        |
|       | 2006   | Software  | 2.  Added parameter POPYEAR to specify |
|       |        | Docu      |     year for Census data.              |
|       |        | mentation |                                        |
|       |        |           | 3.  Changed name of MSALEVL parameter  |
|       |        |           |     to MALEVL to reflect the change in |
|       |        |           |     OMB definitions for areas, and     |
|       |        |           |     added options to allow users to    |
|       |        |           |     specify stratification by county   |
|       |        |           |     level with U.S. Census FIPS or     |
|       |        |           |     modified FIPS, or Metro Area with  |
|       |        |           |     OMB 1999 or OMB 2003 definition.   |
+-------+--------+-----------+----------------------------------------+
| V3.0a | Fe     | Software  | Changed the computation of the         |
|       | bruary | (SAS and  | risk-adjusted rate to use a            |
|       | 20,    | SPSS)     | proportional formula for indirect      |
|       | 2006   |           | standardization.                       |
+-------+--------+-----------+----------------------------------------+
| V3.0a | Fe     | Software  | Added a computation of confidence      |
|       | bruary | (SAS)     | limits.                                |
|       | 20,    |           |                                        |
|       | 2006   |           |                                        |
+-------+--------+-----------+----------------------------------------+
| V3.0a | Fe     | Software  | Updated the coefficients used in the   |
|       | bruary | (SAS and  | calculation of expected and            |
|       | 20,    | SPSS),    | risk-adjusted rates to the 2003        |
|       | 2006   | Software  | reference population.                  |
|       |        | Docu      |                                        |
|       |        | mentation |                                        |
|       |        | and       |                                        |
|       |        | C         |                                        |
|       |        | ovariates |                                        |
|       |        | document  |                                        |
+-------+--------+-----------+----------------------------------------+
| V3.0a | Fe     | Indicator | Revised to limit entries to indicator  |
|       | bruary | Changes   | changes made because of changes to     |
|       | 20,    |           | ICD-9-CM code updates for FY2006 and   |
|       | 2006   |           | moved entries for specification        |
|       |        |           | changes into PQI Change Log.           |
+-------+--------+-----------+----------------------------------------+
| V3.0  | No     | Guide     | 1.  Moved Appendix A into new document |
|       | vember |           |     *Prevention Quality Indicators     |
|       | 3      |           |     Technical Specifications*.         |
|       | 0,2005 |           |                                        |
|       |        |           | 2.  Removed Appendix B.                |
+-------+--------+-----------+----------------------------------------+
| V3.0  | No     | Software  | 1.  Implemented changes associated     |
|       | vember | (SAS and  |     with ICD-9-CM coding updates for   |
|       | 3      | SPSS),    |     Fiscal Year (FY) 2006 (effective   |
|       | 0,2005 | Software  |     10-1-2005). See separate           |
|       |        | Docum     |     documentation on ICD-9 coding      |
|       |        | entation, |     updates for specific details.      |
|       |        | Guide,    |                                        |
|       |        | Technical | 2.  The years for which the ICD-9-CM   |
|       |        | Specif    |     and DRG codes defining PQIs are    |
|       |        | ications, |     valid was amended to be through FY |
|       |        | and       |     2006 instead of FY 2005, that is,  |
|       |        | Analysis  |     the codes in the software are      |
|       |        | &         |     effective through September 30,    |
|       |        | Inter     |     2006.                              |
|       |        | pretation |                                        |
|       |        |           | 3.  Dropped PQI #4 and PQI #6, which   |
|       |        |           |     are being moved into the new       |
|       |        |           |     Pediatric Quality Indicators       |
|       |        |           |     module.                            |
|       |        |           |                                        |
|       |        |           | 4.  Revised PQI #2, PQI #10, PQI #11,  |
|       |        |           |     and PQI #12 to exclude pediatric   |
|       |        |           |     populations.                       |
|       |        |           |                                        |
|       |        |           | 5.  Added exclusion for cystic         |
|       |        |           |     fibrosis and anomalies of the      |
|       |        |           |     respiratory system to PQI #15      |
|       |        |           |     (Asthma).                          |
|       |        |           |                                        |
|       |        |           | 6.  Added exclusion for kidney/urinary |
|       |        |           |     tract disorder and                 |
|       |        |           |     immunocompromised state to PQI #12 |
|       |        |           |     (Urinary Tract Infection).         |
+-------+--------+-----------+----------------------------------------+
| V3.0  | No     | Software  | 1.  Removed section \"Interpreting the |
|       | vember | Docu      |     Results.\"                         |
|       | 3      | mentation |                                        |
|       | 0,2005 | (SAS and  | 2.  Table 3 was amended to include the |
|       |        | SPSS)     |     2004-06 census data and            |
|       |        |           |     condition-specific module file     |
|       |        |           |     (i.e., QICTYCyy.TXT).              |
+-------+--------+-----------+----------------------------------------+
| V3.0  | No     | Software  | Added the 2004-06 census data and      |
|       | vember | (SAS and  | condition-specific module file (e.g.,  |
|       | 3      | SPSS)     | QICTYCyy.TXT)                          |
|       | 0,2005 |           |                                        |
+-------+--------+-----------+----------------------------------------+
| V2.1  | No     | Software  | 1.  The years for which the ICD-9-CM   |
| R4    | vember | (SAS and  |     and DRG codes defining PQIs are    |
|       | 24,    | SPSS),    |     valid was amended to be through FY |
|       | 2004   | Software  |     2005 instead of FY 2004, that is,  |
|       |        | Docum     |     the codes in the software are      |
|       |        | entation, |     effective through September 30,    |
|       |        | and Guide |     2005.                              |
|       |        |           |                                        |
|       |        |           | 2.  Added new module that calculates   |
|       |        |           |     condition-specific rates for the   |
|       |        |           |     diabetes PQIs across stratifiers.  |
+-------+--------+-----------+----------------------------------------+
| V2.1  | No     | Software  | Table 3 was amended to include the     |
| R4    | vember | Docu      | 2003 census data (i.e., QICTY03.TXT    |
|       | 24,    | mentation | and QICTYA03.TXT) and                  |
|       | 2004   | (SAS and  | condition-specific module files        |
|       |        | SPSS)     | (PQSASC2 and QICTYC03.TXT).            |
+-------+--------+-----------+----------------------------------------+
| V2.1  | No     | Software  | Added the 2003 census data (i.e.,      |
| R4    | vember | (SAS and  | QICTY03.TXT and QICTYA03.TXT) and      |
|       | 24,    | SPSS)     | condition-specific module files        |
|       | 2004   |           | (PQSASC2 and QICTYC03.TXT)             |
+-------+--------+-----------+----------------------------------------+
| V2.1  | No     | Guide     | Rearranged the sequence of PQIs to     |
| R4    | vember |           | place in numerical order.              |
|       | 24,    |           |                                        |
|       | 2004   |           |                                        |
+-------+--------+-----------+----------------------------------------+
| V2.1  | No     | Software  | Inserted "PQ" in format names for age  |
| R4    | vember | (SAS)     | aggregations in SAS programs to        |
|       | 24,    |           | distinguish these formats from         |
|       | 2004   |           | similarly named formats used by other  |
|       |        |           | indicator software.                    |
+-------+--------+-----------+----------------------------------------+
| V2.1  | J      | Software  | Implemented changes associated with    |
| R3    | anuary | (SAS and  | ICD-9-CM coding updates from Fiscal    |
|       | 9,     | SPSS) and | Year (FY) 2003 (effective 10-1-2002)   |
|       | 2004   | Guide     | and FY 2004 (effective 10-1-2003). See |
|       |        |           | separate documentation on ICD-9 coding |
|       |        |           | updates for specific details.          |
+-------+--------+-----------+----------------------------------------+
| V2.1  | J      | Software  | 1.  Angina Admission Rate. The         |
| R3    | anuary | (SAS and  |     numerator exclusion for patients   |
|       | 9,     | SPSS)     |     undergoing any surgical procedure  |
|       | 2004   |           |     was removed and replaced with a    |
|       |        |           |     more restrictive exclusion of      |
|       |        |           |     cardiac procedures, identical to   |
|       |        |           |     the exclusion list for cardiac     |
|       |        |           |     procedures included in the CHF     |
|       |        |           |     Admission Rate and Hypertension    |
|       |        |           |     Admission Rate Indicators (see     |
|       |        |           |     below). The rate for the Angina    |
|       |        |           |     Admission Rate indicator is        |
|       |        |           |     expected to decrease significantly |
|       |        |           |     with this change.                  |
|       |        |           |                                        |
|       |        |           | 2.  CHF Admission Rate, Hypertension   |
|       |        |           |     Admission rate and Angina          |
|       |        |           |     Admission Rate. The numerator      |
|       |        |           |     exclusion of major cardiac surgery |
|       |        |           |     was redefined to include only      |
|       |        |           |     surgeries that would typically be  |
|       |        |           |     done on an elective or             |
|       |        |           |     semi-elective basis and therefore  |
|       |        |           |     represent the indication for       |
|       |        |           |     admission.  This would include     |
|       |        |           |     valve repair (35.xx), angioplasty  |
|       |        |           |     and stent placement (36.0x),       |
|       |        |           |     coronary bypass and other          |
|       |        |           |     revascularization surgery          |
|       |        |           |     (36.1x-36.9x), and heart           |
|       |        |           |     transplantation (37.5).In          |
|       |        |           |     addition, the list was expanded to |
|       |        |           |     include procedures associated with |
|       |        |           |     angina, in conjunction with the    |
|       |        |           |     use of this inclusion in the       |
|       |        |           |     Angina Admission Rate Indicator.   |
|       |        |           |     The resulting exclusion is now     |
|       |        |           |     identical for the three            |
|       |        |           |     indicators.                        |
+-------+--------+-----------+----------------------------------------+
| V2.1  | J      | Software  | 1.  All parameter text files were      |
| R3    | anuary | (SAS and  |     renamed to refer specifically to   |
|       | 9,     | SPSS)     |     the PQI module (e.g., use of PQ in |
|       | 2004   |           |     file name). These changes are also |
|       |        |           |     reflected in the software          |
|       |        |           |     documentation.                     |
|       |        |           |                                        |
|       |        |           | 2.  All parameter files were rerun     |
|       |        |           |     using the updated software and     |
|       |        |           |     Year 2000 HCUP SID data.           |
|       |        |           |                                        |
|       |        |           | 3.  Population files for 2000, 2001    |
|       |        |           |     and 2002 were re-estimated using   |
|       |        |           |     the latest available census files  |
+-------+--------+-----------+----------------------------------------+
| V2.1  | J      | S         | The treatment of missing data by SPSS  |
| R3    | anuary | oftware - | was changed to mirror the treatment of |
|       | 9,     | SPSS      | missing data by SAS, specifically the  |
|       | 2004   |           | software requires confirmation for the |
|       |        |           | assignment of a poor outcome or        |
|       |        |           | negative event. For instance, in order |
|       |        |           | to be assigned as a death, each case   |
|       |        |           | must actually be coded as a death.     |
|       |        |           | Missing data is considered neutral.    |
|       |        |           | Missing data for some elements results |
|       |        |           | in the exclusion of that case from the |
|       |        |           | denominator. For a few other elements, |
|       |        |           | the case is retained. Table 5 of the   |
|       |        |           | Software Documentation lists the       |
|       |        |           | impact of missing data for each data   |
|       |        |           | element.                               |
+-------+--------+-----------+----------------------------------------+
| V2.1  | J      | Software  | 1.  Updated documentation to reference |
| R2    | anuary | Docu      |     the changes made to the software   |
|       | 10,    | mentation |     programs such as the change in the |
|       | 2003   | (SAS and  |     default number of ICD-9 diagnosis  |
|       |        | SPSS)     |     and procedure codes, the option to |
|       |        |           |     stratify area by MSA or county,    |
|       |        |           |     and instructions for using the     |
|       |        |           |     patient FIPS code.                 |
|       |        |           |                                        |
|       |        |           | 2.  Modified the data file input       |
|       |        |           |     specifications to standardize      |
|       |        |           |     across software programs (SAS and  |
|       |        |           |     SPSS) so the user would be able to |
|       |        |           |     run the same input data file with  |
|       |        |           |     either statistical package.        |
+-------+--------+-----------+----------------------------------------+
| V2.1  | J      | Software  | 1.  The county-to-MSA mapping for      |
| R2    | anuary | (SAS and  |     Waller County in Texas was         |
|       | 10,    | SPSS)     |     corrected by assigning the value   |
|       | 2003   |           |     of 3362 for the Houston-Galveston  |
|       |        |           |     MSA.                               |
|       |        |           |                                        |
|       |        |           | 2.  The default number of ICD-9-CM     |
|       |        |           |     diagnoses was changed from 5 to    |
|       |        |           |     30.                                |
|       |        |           |                                        |
|       |        |           | 3.  The default number of ICD-9-CM     |
|       |        |           |     procedures was changed from 4 to   |
|       |        |           |     30.                                |
|       |        |           |                                        |
|       |        |           | 4.  The ICD-9 coding was updated to    |
|       |        |           |     reflect changes through FY 2002    |
|       |        |           |     (September 30, 2002).              |
|       |        |           |                                        |
|       |        |           | 5.  Added the option for the user to   |
|       |        |           |     select rates calculated by MSA or  |
|       |        |           |     by county for urban areas (rates   |
|       |        |           |     for rural areas will always be by  |
|       |        |           |     county).                           |
|       |        |           |                                        |
|       |        |           | 6.  Additional ASCII text files with   |
|       |        |           |     Census residential population      |
|       |        |           |     numbers for 2000 and 2001 were     |
|       |        |           |     included in the module.            |
|       |        |           |                                        |
|       |        |           | 7.  Risk-adjustment inputs that were   |
|       |        |           |     based on nineteen SID state data   |
|       |        |           |     files from the year 1997 were      |
|       |        |           |     replaced with numbers that were    |
|       |        |           |     based on twenty-nine SID state     |
|       |        |           |     data files from the year 2000.     |
|       |        |           |                                        |
|       |        |           | 8.  The formulation of smoothed rates  |
|       |        |           |     was corrected so that missing      |
|       |        |           |     values would be generated when     |
|       |        |           |     appropriate, rather than zeros.    |
|       |        |           |                                        |
|       |        |           | 9.  Hardcopy printouts were modified   |
|       |        |           |     to be easier to understand         |
|       |        |           |     (intermediate means were removed,  |
|       |        |           |     the final means were restricted to |
|       |        |           |     just area-level records, prints of |
|       |        |           |     the final results were reformatted |
|       |        |           |     and labeled).                      |
+-------+--------+-----------+----------------------------------------+
| V2.1  | O      | Guide     | 1.  The definition for the Perforated  |
| R2    | ctober |           |     appendix admission rate was        |
|       | 9,     |           |     clarified in appendix A, by moving |
|       | 2002   |           |     the ICD-9-CM codes for the         |
|       |        |           |     population at risk to a separate   |
|       |        |           |     section that defined the           |
|       |        |           |     denominator for the rate.          |
|       |        |           |                                        |
|       |        |           | 2.  The definition of the Low          |
|       |        |           |     Birthweight indicator was          |
|       |        |           |     corrected in Appendix A, by        |
|       |        |           |     removing references to DRG\'s      |
|       |        |           |     370-375.                           |
+-------+--------+-----------+----------------------------------------+
| V2.1  | April  | Guide     | 1.  The age inclusions for the         |
| R1    | 17,    |           |     populations at risk were corrected |
|       | 2002   |           |     for the following indicators:      |
|       |        |           |     bacteria pneumonia, dehydration,   |
|       |        |           |     urinary tract infection, angina    |
|       |        |           |     without procedure, CHF,            |
|       |        |           |     hypertension, adult asthma, COPD,  |
|       |        |           |     uncontrolled diabetes, diabetes    |
|       |        |           |     short-term complications, diabetes |
|       |        |           |     long-term complications, and       |
|       |        |           |     lower-extremity amputation among   |
|       |        |           |     patients with diabetes. In all     |
|       |        |           |     cases, the descriptions of the     |
|       |        |           |     indicators in the Guide suggested  |
|       |        |           |     that the indicator be applied to a |
|       |        |           |     specific age group, but suggested  |
|       |        |           |     that it could be applied to other  |
|       |        |           |     age groups as well. The software   |
|       |        |           |     applies the indicator to all       |
|       |        |           |     relevant age groups; therefore,    |
|       |        |           |     the Guide was amended to reflect   |
|       |        |           |     this.                              |
|       |        |           |                                        |
|       |        |           | 2.  For the definition of              |
|       |        |           |     Lower-Extremity Amputation among   |
|       |        |           |     Patients with Diabetes, under      |
|       |        |           |     Outcomes of Interest, \"Discharges |
|       |        |           |     with ICD-9-CM ***principal         |
|       |        |           |     diagnosis*** codes\" was changed   |
|       |        |           |     to \"Discharges with ICD-9-CM      |
|       |        |           |     ***procedure*** codes\".           |
+-------+--------+-----------+----------------------------------------+
| V2.1  | April  | Software  | The years for which the ICD-9-CM codes |
| R1    | 17,    | docu      | defining PQIs are valid was amended to |
|       | 2002   | mentation | be through FY 2001 instead of FY 2000, |
|       |        |           | that is, the codes in the software are |
|       |        |           | effective through September 30, 2001.  |
+-------+--------+-----------+----------------------------------------+