ICD-9-CM diagnosis code (retired)
153.5 — Malignant neoplasm of appendix vermiformis
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 153.5
153.5 is an ICD-9-CM diagnosis code for malignant neoplasm of appendix vermiformis. 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, C18.1 (Malignant neoplasm of appendix). The match is exact.
ICD-10-CM equivalents
- C18.1Malignant neoplasm of appendixexact match
Common questions about 153.5
What is the ICD-10 code for ICD-9 153.5?
- The GEMs map 153.5 to ICD-10-CM C18.1.
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.