ICD-9-CM diagnosis code (retired)
209.51 — Benign carcinoid tumor of the appendix
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 209.51
209.51 is an ICD-9-CM diagnosis code for benign carcinoid tumor of the appendix. 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, D3A.020 (Benign carcinoid tumor of the appendix). The match is exact.
ICD-10-CM equivalents
- D3A.020Benign carcinoid tumor of the appendixexact match
Common questions about 209.51
What is the ICD-10 code for ICD-9 209.51?
- The GEMs map 209.51 to ICD-10-CM D3A.020.
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.