Cover Page $ in Millions	12 Months Ended
Cover Page $ in Millions	Dec. 31, 2025 USD ($) shares
Cover [Abstract]
Document Type	10-K/A
Document Annual Report	true
Document Period End Date	Dec. 31, 2025
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-38993
Entity Registrant Name	HEALTH CATALYST, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	45-3337483
Entity Address, Address Line One	10897 South River Front Parkway #300
Entity Address, City or Town	South Jordan
Entity Address, State or Province	UT
Entity Address, Postal Zip Code	84095
City Area Code	801
Local Phone Number	708-6800
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	HCAT
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	true
Entity Public Float \| $	$ 259.0
Entity Common Stock, Shares Outstanding \| shares	73,586,183
Documents Incorporated by Reference	None
Entity Central Index Key	0001636422
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	FY
Amendment Flag	true
Amendment Description	On March 12, 2026, Health Catalyst, Inc. (the “Company”) filed its Annual Report on Form 10-K for the year ended December 31, 2025 (the “Original Form 10-K”) with the Securities and Exchange Commission (the “SEC”). The Original Form 10-K omitted portions of Part III, Items 10 (Directors, Executive Officers and Corporate Governance), 11 (Executive Compensation), 12 (Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters), 13 (Certain Relationships and Related Transactions, and Director Independence) and 14 (Principal Accountant Fees and Services) in reliance on General Instruction G(3) to Form 10-K, which provides that such information may be either incorporated by reference from the registrant’s definitive proxy statement or included in an amendment to Form 10-K, in either case filed with the SEC not later than 120 days after the end of the fiscal year.This Amendment No. 1 to Form 10-K (“Amendment”) is being filed solely to:•amend and restate Part III, Items 10, 11, 12, 13, and 14 of the Original Form 10-K to include the information required by such Items; •delete the reference on the cover of the Original Form 10-K to the incorporation by reference of portions of an amendment to our annual report on Form 10-K into Part III of the Original Form 10-K; and•file new certifications of our principal executive officer and principal financial officer as exhibits to this Amendment under Item 15 of Part IV hereof, pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, as amended (“Exchange Act”). We are amending Item 15 of Part IV to reflect the inclusion of these certifications. Because no financial statements are contained within this Amendment, we are not including certifications pursuant to Section 906 of The Sarbanes-Oxley Act of 2002.Except as expressly noted above, this Amendment does not modify or update in any way the disclosures made in the Original Form 10-K and does not reflect events occurring after the filing of the Original Form 10-K. Accordingly, this Amendment should be read in conjunction with the Company’s filings made with the SEC subsequent to the filing of the Original 10-K, as information in such filings may update or supersede certain information contained in this Amendment.As used in this Amendment, unless expressly indicated or the context otherwise requires, references to “we,” “our,” “us,” “Health Catalyst,” “the Company,” and similar references refer to Health Catalyst, Inc. and its consolidated subsidiaries.

Health Catalyst, Inc. 10-K/A