ICD-9-CM diagnosis code (retired)
721.91 — Spondylosis of unspecified site, with myelopathy
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 721.91
721.91 is an ICD-9-CM diagnosis code for spondylosis of unspecified site, with myelopathy. 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, M47.10 (Other spondylosis with myelopathy, site unspecified). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- M47.10Other spondylosis with myelopathy, site unspecifiedapproximate
Common questions about 721.91
What is the ICD-10 code for ICD-9 721.91?
- The GEMs map 721.91 to ICD-10-CM M47.10.
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.