<SEC-DOCUMENT>0001180145-18-000004-index.html : 20180124
<SEC-HEADER>0001180145-18-000004.hdr.sgml : 20180124
<ACCEPTANCE-DATETIME>20180124070447
ACCESSION NUMBER:		0001180145-18-000004
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20180112
ITEM INFORMATION:		Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20180124
DATE AS OF CHANGE:		20180124

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Cardiovascular Systems Inc
		CENTRAL INDEX KEY:			0001180145
		STANDARD INDUSTRIAL CLASSIFICATION:	SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
		IRS NUMBER:				411698056
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-52082
		FILM NUMBER:		18543955

	BUSINESS ADDRESS:	
		STREET 1:		1225 OLD HWY 8 NW
		CITY:			ST. PAUL
		STATE:			MN
		ZIP:			55112
		BUSINESS PHONE:		651-259-1600

	MAIL ADDRESS:	
		STREET 1:		1225 OLD HWY 8 NW
		CITY:			ST. PAUL
		STATE:			MN
		ZIP:			55112

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	REPLIDYNE INC
		DATE OF NAME CHANGE:	20020813
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>a8-k12418.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: a8-k12418.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>ex991-12418.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
Document 2 - file: ex991-12418.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>csireleaserhondarobbf_image1.jpg
<TEXT>
Document 3 - file: csireleaserhondarobbf_image1.jpg

</DOCUMENT>
</SEC-DOCUMENT>