ICD-9-CM diagnosis code (retired)
209.33 — Merkel cell carcinoma of the upper limb
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 209.33
209.33 is an ICD-9-CM diagnosis code for Merkel cell carcinoma of the upper limb. 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, C4A.60 (Merkel cell carcinoma of unspecified upper limb, including shoulder). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- C4A.60Merkel cell carcinoma of unspecified upper limb, including shoulderapproximate
Common questions about 209.33
What is the ICD-10 code for ICD-9 209.33?
- The GEMs map 209.33 to ICD-10-CM C4A.60.
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.