v3.25.4

Cover Page	Feb. 24, 2026
Cover [Abstract]
Document Type	8-K/A
Document Period End Date	Feb. 24, 2026
Entity Registrant Name	CAREDX, INC.
Entity Incorporation, State or Country Code	DE
Entity File Number	001-36536
Entity Tax Identification Number	94-3316839
Entity Address, Address Line One	8000 Marina Boulevard
Entity Address, City or Town	Brisbane
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94005
City Area Code	415
Local Phone Number	287-2300
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Title of 12(b) Security	Common Stock, $0.001 Par Value
Trading Symbol	CDNA
Security Exchange Name	NASDAQ
Entity Emerging Growth Company	false
Entity Central Index Key	0001217234
Amendment Flag	true
Amendment Description	Explanatory NoteThis Current Report on Form 8-K/A (this “Amendment”) amends the Current Report on Form 8-K filed with the Securities and Exchange Commission on February 24, 2026 (the “Original Form 8-K”) by CareDx, Inc. (the “Company”). This Amendment is being filed to add Inline Extensible Business Reporting Language (iXBRL) tagging to Items 5.02 and 7.01 of the Original Form 8-K. No other changes have been made to the Original Form 8-K, which is restated herein.

Description of changes contained within amended document.

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Cover page.

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For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

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The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

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A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

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Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

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The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

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CareDx, Inc. 8-K/A