Convert ICD-9 421.1 to ICD-10

ICD-9 code 421.1, Ac endocardit in oth dis, crosswalked to ICD-10 with the official CMS General Equivalence Mappings. Convert another code below.

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Official CMS General Equivalence Mappings Final GEMs release (FY 2018) Maps in both directions

1 ICD-10 mapping for ICD-9 421.1

From the official CMS General Equivalence Mappings. Review each mapping's flags before selecting the final code. Convert another code

ICD-9 code 421.1, "Ac endocardit in oth dis", maps to ICD-10 code I39, "Endocarditis and heart valve disord in dis classd elswhr". The mapping is flagged approximate: it is the closest available equivalent, not an exact match, so review the clinical documentation when selecting the final code. The crosswalk comes from the official CMS General Equivalence Mappings.

ICD‑9 Code

421.1

Ac endocardit in oth dis

ICD‑10 Code

I39

Endocarditis and heart valve disord in dis classd elswhr

Approximate Flag – This ICD-10 code does not have an exact ICD-9 equivalent. The matched code is the closest available option and may not fully capture the original diagnosis.

See everything about the source code, including its category, synonyms, and history: open the 421.1 code page → Or run the reverse crosswalk: convert I39 back to ICD-9 →