ICD-9-CM diagnosis code (retired)
845.09 — Other sprains and strains of ankle
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 845.09
845.09 is an ICD-9-CM diagnosis code for other sprains and strains of ankle. 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 S86.019A (Strain of unspecified Achilles tendon, initial encounter) and S93.499A (Sprain of other ligament of unspecified ankle, initial encounter). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
Common questions about 845.09
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.