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ICD-9-CM diagnosis code (retired)

172.2 — Malignant melanoma of skin of ear and external auditory canal

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 172.2

172.2 is an ICD-9-CM diagnosis code for malignant melanoma of skin of ear and external auditory canal. 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 4 ICD-10-CM codes, such as C43.20 (Malignant melanoma of unspecified ear and external auricular canal), D03.20 (Melanoma in situ of unspecified ear and external auricular canal) and D03.21 (Melanoma in situ of right ear and external auricular canal). All of these are approximate matches, so review the record to pick the right one.

ICD-10-CM equivalents

Common questions about 172.2

What is the ICD-10 code for ICD-9 172.2?

The GEMs map 172.2 to ICD-10-CM C43.20, D03.20, D03.21 and D03.22.

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.