ICD-10 Code: M66.221 – Spontaneous rupture of extensor tendons, right upper arm

ICD-10 code M66.221 corresponds to Spontaneous rupture of extensor tendons, right upper arm. This code is classified under the chapter M66 Spontaneous rupture of synovium and tendon, which is part of the M60-M79: Soft tissue disorders category.

The parent chapter is Diseases of the musculoskeletal system and connective tissue.