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

This code signifies a specific type of growth plate fracture (Salter-Harris Type II) affecting the lower end of the ulna bone. This fracture involves both the growth plate and a small portion of the metaphysis, but the joint surface remains intact. It is a closed fracture, meaning the skin is not broken.

This code is appropriate for documenting an initial encounter for a patient presenting with a Salter-Harris Type II fracture of the distal ulnar physis. This typically occurs in pediatric or adolescent patients following trauma to the wrist or forearm. It should be used when the affected arm is not specified in the medical record.

• Ensure the documentation specifies "Salter-Harris Type II" and "lower end of ulna."
• Verify that this is the initial encounter for treatment of a closed fracture.
• If the affected arm (left or right) is documented, use the more specific code (S59.021A or S59.022A).