Convert ICD-10 R51 to ICD-9

ICD-10 code R51, Headache, crosswalked to ICD-9 with the official CMS General Equivalence Mappings. Convert another code below.

Try:

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

1 ICD-9 mapping for ICD-10 R51

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

ICD-10 code R51, "Headache", maps to ICD-9 code 784.0, "Headache". 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‑10 Code

R51

Headache

ICD‑9 Code

784.0

Headache

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 R51 code page → Or run the reverse crosswalk: convert 784.0 back to ICD-10 →