Skip to content
Dx

ICD-9-CM diagnosis code (retired)

171.8 — Malignant neoplasm of other specified sites of connective and other soft tissue

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 171.8

171.8 is an ICD-9-CM diagnosis code for malignant neoplasm of other specified sites of connective and other soft tissue. 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 2 ICD-10-CM codes, such as C47.8 (Malignant neoplasm of overlapping sites of peripheral nerves and autonomic nervous system) and C49.8 (Malignant neoplasm of overlapping sites of connective and soft tissue). All of these are approximate matches, so review the record to pick the right one.

ICD-10-CM equivalents

Common questions about 171.8

What is the ICD-10 code for ICD-9 171.8?

The GEMs map 171.8 to ICD-10-CM C47.8 and C49.8.

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.