Calcifcn and ossifictn of muscles assoc w burns, l up arm

This code describes the pathological hardening of muscle tissue in the left upper arm due to the deposition of calcium and bone-like material, specifically occurring as a complication of a burn injury. This process, known as myositis ossificans, leads to the formation of heterotopic bone within the muscle.

Use this code when documentation clearly indicates calcification or ossification of muscles in the left upper arm directly attributed to a prior burn. This diagnosis is typically confirmed by imaging studies (e.g., X-ray, CT scan) showing heterotopic bone formation within the affected muscle.

• Ensure documentation specifies the left upper arm and a clear causal link to a burn injury.
• Do not confuse with other forms of myositis ossificans not associated with burns (e.g., M61.0-).
• Code the underlying burn injury (T20-T32) as an additional diagnosis, if still active and relevant.