ICD-9-CM diagnosis code (retired)
845.00 — Sprain of ankle, unspecified site
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 845.00
845.00 is an ICD-9-CM diagnosis code for sprain of ankle, unspecified site. 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 S93.409A (Sprain of unspecified ligament of unspecified ankle, initial encounter) and S96.919A (Strain of unspecified muscle and tendon at ankle and foot level, unspecified foot, initial encounter). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
Common questions about 845.00
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.