Myositis ossificans traumatica, left forearm

This code describes the formation of heterotopic bone within the muscle tissue of the left forearm, specifically as a result of trauma. This non-neoplastic process leads to a palpable mass and can cause pain and restricted range of motion in the affected limb. It is a benign condition where bone forms in soft tissues not normally ossified.

Use this code when documentation clearly indicates myositis ossificans in the left forearm, with a direct causal link to a traumatic event. Supporting documentation should include imaging reports (e.g., X-ray, MRI) confirming heterotopic ossification and a history of trauma to the left forearm.

• Ensure documentation specifies "traumatica" to differentiate from other forms of myositis ossificans.
• Verify the laterality and anatomical site (left forearm) are explicitly stated in the medical record.
• Do not confuse with calcification of soft tissue not specified as ossification, or with true osteosarcoma.