Spontaneous rupture of extensor tendons, left shoulder

This code signifies a non-traumatic tearing of the extensor tendons in the left shoulder. This condition typically results from degenerative changes within the tendon structure rather than an acute injury. It leads to impaired shoulder movement and function.

Apply this code when documentation clearly indicates a spontaneous (non-traumatic) rupture of the extensor tendons affecting the left shoulder. Supporting documentation should specify the lack of an external force or injury as the cause of the rupture.

• Differentiate from traumatic ruptures (S46.012A-S46.019S) which require an external cause.
• Ensure the laterality (left shoulder) is explicitly documented.
• Verify that "spontaneous" or "non-traumatic" is stated to distinguish from other types of tendon ruptures.