840.9 — Sprains and strains of unspecified site of shoulder and upper arm

840.9 is an ICD-9-CM diagnosis code for sprains and strains of unspecified site of shoulder and upper arm. 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 S43.409A (Unspecified sprain of unspecified shoulder joint, initial encounter) and S46.919A (Strain of unspecified muscle, fascia and tendon at shoulder and upper arm level, unspecified arm, initial encounter). All of these are approximate matches, so review the record to pick the right one.