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    ACCESSION NUMBER:		0001308179-22-000173
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		64
    CONFORMED PERIOD OF REPORT:	20220518
    FILED AS OF DATE:		20220404
    DATE AS OF CHANGE:		20220404

    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

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    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-27512
    		FILM NUMBER:		22800853

    	BUSINESS ADDRESS:
    		STREET 1:		6175 SOUTH WILLOW DRIVE
    		CITY:			GREENWOOD VILLAGE
    		STATE:			CO
    		ZIP:			80111
    		BUSINESS PHONE:		3037962850

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    		CITY:			GREENWOOD VILLAGE
    		STATE:			CO
    		ZIP:			80111
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