ICD-9-CM diagnosis code (retired)
356.4 — Idiopathic progressive polyneuropathy
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 356.4
356.4 is an ICD-9-CM diagnosis code for idiopathic progressive polyneuropathy. 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, G60.3 (Idiopathic progressive neuropathy). The match is exact.
ICD-10-CM equivalents
- G60.3Idiopathic progressive neuropathyexact match
Common questions about 356.4
What is the ICD-10 code for ICD-9 356.4?
- The GEMs map 356.4 to ICD-10-CM G60.3.
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.