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    ACCESSION NUMBER:		0001564590-21-053937
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		14
    CONFORMED PERIOD OF REPORT:	20211102
    ITEM INFORMATION:		Entry into a Material Definitive Agreement
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20211103
    DATE AS OF CHANGE:		20211103

    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:		211375291

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

    	MAIL ADDRESS:
    		STREET 1:		6175 SOUTH WILLOW DRIVE
    		CITY:			GREENWOOD VILLAGE
    		STATE:			CO
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