Separation of muscle (nontraumatic), left thigh

This diagnosis code signifies a spontaneous detachment or tearing of muscle fibers in the left thigh, not caused by an external injury or trauma. This condition often results from underlying degenerative processes, overuse, or systemic diseases affecting muscle integrity.

Apply this code when documentation clearly indicates a non-traumatic separation of muscle tissue specifically located in the left thigh. Supporting documentation should rule out acute injury and may describe symptoms such as sudden pain, swelling, or a palpable defect in the muscle.

• Ensure documentation explicitly states "nontraumatic" to differentiate from muscle strains or tears due to injury.
• Verify laterality; this code is specific to the left thigh. Use M62.051 for the right thigh or M62.059 for unspecified.
• Consider co-reporting with codes for underlying conditions (e.g., myopathies, inflammatory conditions) if they are the etiology of the muscle separation.