Spontaneous rupture of extensor tendons, right ank/ft

This code signifies a non-traumatic tear of the extensor tendons located in the right ankle or foot. This condition typically results from degenerative changes within the tendon rather than an acute injury. Patients often present with sudden pain, swelling, and an inability to extend the toes or dorsiflex the foot.

Apply this code when documentation clearly indicates a spontaneous (non-traumatic) rupture of an extensor tendon in the patient's right ankle or foot. This diagnosis is supported by findings such as a palpable gap, loss of active extension, and imaging studies confirming tendon discontinuity without evidence of external force.

• Differentiate from traumatic ruptures (S96.011A-S96.099S) which require an injury code.
• Ensure laterality is accurately documented (right vs. left vs. bilateral).
• Verify the specific tendon involved if documented, though this code is general for extensor tendons.