Separation of muscle (nontraumatic), right hand

This code signifies a non-traumatic detachment or tearing of muscle fibers within the right hand. This condition is not caused by an external injury but rather by underlying factors such as overuse, degenerative changes, or spontaneous rupture. It results in pain, weakness, and impaired function of the affected hand.

Apply this code when documentation clearly indicates a separation or rupture of muscle in the right hand that is explicitly stated as non-traumatic in origin. This typically occurs in scenarios involving chronic strain, inflammatory processes, or spontaneous muscle tears without an acute injury event. Supporting documentation should specify the laterality (right hand) and the non-traumatic nature of the muscle separation.

• Ensure documentation explicitly states "non-traumatic" to differentiate from traumatic muscle injuries (S66.- codes).
• Verify laterality; this code is specific to the right hand. Use M62.042 for the left hand and M62.049 for unspecified hand.
• Do not use this code for muscle strains or sprains without documented separation or rupture.