    <SEC-DOCUMENT>0001636422-21-000056-index.html : 20210624
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    <ACCEPTANCE-DATETIME>20210624160443
    ACCESSION NUMBER:		0001636422-21-000056
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		20
    CONFORMED PERIOD OF REPORT:	20210623
    ITEM INFORMATION:		Unregistered Sales of Equity Securities
    ITEM INFORMATION:		Other Events
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20210624
    DATE AS OF CHANGE:		20210624

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Health Catalyst, Inc.
    		CENTRAL INDEX KEY:			0001636422
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROGRAMMING, DATA PROCESSING, ETC. [7370]
    		IRS NUMBER:				453337483
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-38993
    		FILM NUMBER:		211042900

    	BUSINESS ADDRESS:
    		STREET 1:		10897 SOUTH RIVER FRONT PARKWAY, #300
    		CITY:			SOUTH JORDAN
    		STATE:			UT
    		ZIP:			84095
    		BUSINESS PHONE:		801-708-6800

    	MAIL ADDRESS:
    		STREET 1:		10897 SOUTH RIVER FRONT PARKWAY, #300
    		CITY:			SOUTH JORDAN
    		STATE:			UT
    		ZIP:			84095

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	HQC Holdings, Inc.
    		DATE OF NAME CHANGE:	20150312
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>hcat-20210623.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: hcat-20210623.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>exhibit991-twistleacquisit.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: exhibit991-twistleacquisit.htm

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    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>exhibit992-twistleinvest.htm
    <DESCRIPTION>EX-99.2
    <TEXT>
    Document 3 - file: exhibit992-twistleinvest.htm

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    <SEQUENCE>4
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    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
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    <SEQUENCE>6
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    <TYPE>EX-101.PRE
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    <DOCUMENT>
    <TYPE>GRAPHIC
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    <FILENAME>exhibit992-twistleinvest001.jpg
    <DESCRIPTION>GRAPHIC
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    <FILENAME>exhibit992-twistleinvest003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
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    <SEQUENCE>11
    <FILENAME>exhibit992-twistleinvest004.jpg
    <DESCRIPTION>GRAPHIC
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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>healthcatalystlogoa01.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: healthcatalystlogoa01.jpg

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    <TYPE>XML
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    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
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    <SEQUENCE>14
    <FILENAME>R1.htm
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    <TEXT>
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    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>15
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 15 - file: Financial_Report.xlsx

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    <TYPE>XML
    <SEQUENCE>16
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    <TEXT>
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    <SEQUENCE>17
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    <TEXT>
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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>18
    <FILENAME>FilingSummary.xml
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    <TEXT>
    Document 18 - file: FilingSummary.html

    Document 18 - RAW XML: FilingSummary.xml

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    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>20
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 20 - file: MetaLinks.json

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    <TYPE>ZIP
    <SEQUENCE>21
    <FILENAME>0001636422-21-000056-xbrl.zip
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    <TEXT>
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