Sltr-haris Type I physl fx lower end of ulna, unsp arm, sqla

This code indicates a past Salter-Harris Type I growth plate fracture at the lower end of the ulna, affecting an unspecified arm, where the patient is now experiencing a long-term complication or residual effect from that injury. This type of fracture involves a separation of the epiphysis from the metaphysis through the growth plate itself, without bone breakage. The "sequela" designation means the original acute injury has resolved, but its lasting consequences are now being treated.

Use this code when documenting and billing for the treatment of a chronic condition or complication directly resulting from a previously sustained Salter-Harris Type I fracture of the distal ulnar physis. Examples include growth arrest, angular deformity, or persistent pain attributed to the old injury. This code is appropriate when the acute fracture has healed, and the current encounter addresses a residual problem.

• Always use this code as a secondary diagnosis, following the code for the specific sequela being treated (e.g., M21.02 for valgus deformity).
• Ensure documentation clearly links the current condition to the old Salter-Harris Type I fracture of the ulna.
• The "S" at the end indicates a sequela; do not use this code for the initial or subsequent encounter for the acute fracture.