<SEC-DOCUMENT>0001564590-18-022289-index.html : 20180824
<SEC-HEADER>0001564590-18-022289.hdr.sgml : 20180824
<ACCEPTANCE-DATETIME>20180824112231
ACCESSION NUMBER:		0001564590-18-022289
CONFORMED SUBMISSION TYPE:	S-8
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20180824
DATE AS OF CHANGE:		20180824
EFFECTIVENESS DATE:		20180824

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:		S-8
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-227000
		FILM NUMBER:		181036202

	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
		ZIP:			80111
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-8
<SEQUENCE>1
<FILENAME>csgs-s8.htm
<DESCRIPTION>S-8
<TEXT>
Document 1 - file: csgs-s8.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>csgs-ex51_7.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 2 - file: csgs-ex51_7.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>csgs-ex231_6.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 3 - file: csgs-ex231_6.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>gh54eugt5z24000001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: gh54eugt5z24000001.jpg

</DOCUMENT>
</SEC-DOCUMENT>