ICD-9-CM diagnosis code (retired)
158.0 — Malignant neoplasm of retroperitoneum
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 158.0
158.0 is an ICD-9-CM diagnosis code for malignant neoplasm of retroperitoneum. 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, C48.0 (Malignant neoplasm of retroperitoneum). The match is exact.
ICD-10-CM equivalents
- C48.0Malignant neoplasm of retroperitoneumexact match
Common questions about 158.0
What is the ICD-10 code for ICD-9 158.0?
- The GEMs map 158.0 to ICD-10-CM C48.0.
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.