Sltr-haris Type IV physl fx lower end ulna, unsp arm, init

This code signifies a specific type of growth plate fracture (Salter-Harris Type IV) affecting the lower end of the ulna bone in a child or adolescent. This fracture extends through the epiphysis, growth plate, and metaphysis, indicating a more severe injury with potential for growth disturbance. The "unspecified arm" indicates that laterality (left or right) was not documented.

Use this code for the initial encounter of a closed Salter-Harris Type IV fracture of the distal ulna when the medical record does not specify which arm was affected. This typically occurs following trauma to the wrist or forearm in a skeletally immature individual.

• Ensure documentation clearly states "Salter-Harris Type IV" and "lower end of ulna."
• Verify laterality is truly unspecified; if left or right is documented, a more specific code should be used.
• Confirm this is the initial encounter for a closed fracture. Subsequent encounters or open fractures will require different codes.