# EDGAR Filing Document

**Accession Number:** 0001005757
**File Stem:** 0000000000-23-001603
**Filing Date:** 2023-2
**Character Count:** 2774
**Document Hash:** 1599cfd34afe583a9b93eb6a638152a1
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000000000-23-001603.hdr.sgml**: 20230317

**ACCESSION NUMBER**: 0000000000-23-001603

**CONFORMED SUBMISSION TYPE**: UPLOAD

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20230216

**FILED FOR**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CSG SYSTEMS INTERNATIONAL INC
- **CENTRAL INDEX KEY:** 0001005757
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-COMPUTER PROCESSING & DATA PREPARATION [7374]
- **IRS NUMBER:** 470783182
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** UPLOAD

**BUSINESS ADDRESS:**
- **STREET 1:** 169 INVERNESS DR W
- **STREET 2:** SUITE 300
- **CITY:** ENGLEWOOD
- **STATE:** CO
- **ZIP:** 80112
- **BUSINESS PHONE:** 3037962850

**MAIL ADDRESS:**
- **STREET 1:** 169 INVERNESS DR W
- **STREET 2:** SUITE 300
- **CITY:** ENGLEWOOD
- **STATE:** CO
- **ZIP:** 80112

## Text-Extract

```

United States securities and exchange commission logo

                     February 16, 2023

       Hai Tran
       Chief Financial Officer
       CSG Systems International, Inc.
       6175 S. Willow Drive, 10th Floor
       Greenwood Village, Colorado 80111

                                                        Re: CSG Systems
International, Inc.
                                                            Form 10-K for the
Fiscal Year Ended December 31, 2021
                                                            Filed February 18,
2022
                                                            File No. 000-27512

       Dear Hai Tran:

              We have completed our review of your filing. We remind you that
the company and its
       management are responsible for the accuracy and adequacy of their
disclosures, notwithstanding
       any review, comments, action or absence of action by the staff.

                     Sincerely,

                     Division of Corporation Finance

                     Office of Technology

```

### Attached PDF Documents

**Attachment 1:** `filename1`

![img-0.jpeg](img-0.jpeg)

DIVISION OF
CORPORATION FINANCE

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

February 16, 2023

Hai Tran
Chief Financial Officer
CSG Systems International, Inc.
6175 S. Willow Drive, 10th Floor
Greenwood Village, Colorado 80111

Re: CSG Systems International, Inc.

Form 10-K for the Fiscal Year Ended December 31, 2021

Filed February 18, 2022

File No. 000-27512

Dear Hai Tran:

We have completed our review of your filing. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff.

Sincerely,

Division of Corporation Finance
Office of Technology