Spontaneous rupture of other tendons, unspecified hand

This code signifies the non-traumatic tearing of a tendon in an unspecified hand, excluding those specifically categorized elsewhere (e.g., rotator cuff, Achilles). It represents a spontaneous event, meaning the rupture occurred without an external force or injury.

Apply this code when documentation clearly indicates a spontaneous rupture of a hand tendon, and the specific tendon involved is not identified. This is appropriate when the physician's notes state "spontaneous tendon rupture, hand" without further anatomical detail.

• Avoid this code if the rupture is due to a traumatic injury; instead, use a code from the S66 category.
• Always strive for greater specificity. If the specific tendon (e.g., flexor, extensor) or digit is documented, use a more precise code.
• This code should be used as a last resort when the exact tendon and laterality are unknown.