Other ossification of muscle, left upper arm

This code describes the pathological formation of bone tissue within the muscle of the left upper arm, excluding myositis ossificans traumatica. This condition, known as heterotopic ossification, results in abnormal hardening and restricted movement of the affected muscle.

Use this code when documentation specifies non-traumatic ossification occurring in the muscles of the patient's left upper arm. This typically arises from genetic predispositions, neurological injuries, or burns, rather than direct muscle trauma. Supporting documentation should clearly indicate the location and the non-traumatic etiology of the ossification.

• Differentiate from myositis ossificans traumatica (M61.0-), which has a distinct traumatic etiology.
• Ensure laterality (left upper arm) is explicitly documented to support this specific code.
• Consider additional codes for underlying conditions or causes contributing to the heterotopic ossification.