ICD-9-CM diagnosis code (retired)
184.4 — Malignant neoplasm of vulva, unspecified site
ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-CM equivalents from the CMS General Equivalence Mappings.
About ICD-9-CM 184.4
184.4 is an ICD-9-CM diagnosis code for malignant neoplasm of vulva, unspecified site. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.
The CMS General Equivalence Mappings translate it to one ICD-10-CM code, C51.9 (Malignant neoplasm of vulva, unspecified). The match is exact.
ICD-10-CM equivalents
- C51.9Malignant neoplasm of vulva, unspecifiedexact match
Common questions about 184.4
What is the ICD-10 code for ICD-9 184.4?
- The GEMs map 184.4 to ICD-10-CM C51.9.
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.