<SEC-DOCUMENT>0001308179-23-000488-index.html : 20230403
<SEC-HEADER>0001308179-23-000488.hdr.sgml : 20230403
<ACCEPTANCE-DATETIME>20230403140424
ACCESSION NUMBER:		0001308179-23-000488
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		6
FILED AS OF DATE:		20230403
DATE AS OF CHANGE:		20230403

FILER:

	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:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27512
		FILM NUMBER:		23791867

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>lcsgs2023_defa14a.htm
<DESCRIPTION>CSG SYSTEMS INTERNATIONAL INC - DEFA14A
<TEXT>
Document 1 - file: lcsgs2023_defa14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>check01.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: check01.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>lcsgs2023_notice1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: lcsgs2023_notice1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>lcsgs2023_notice2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: lcsgs2023_notice2.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>logo.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: logo.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>uncheck.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: uncheck.jpg

</DOCUMENT>
</SEC-DOCUMENT>