Unsp fx shaft of unsp ulna, subs for clos fx w delay heal

This code signifies a fracture of the shaft of the ulna, where the specific location or type of fracture is not documented. The injury is a closed fracture, meaning the skin is intact, and the patient is in a subsequent phase of care where the fracture is not healing at the expected rate.

This code is appropriate for follow-up encounters when a patient presents with a previously diagnosed, unspecified closed ulnar shaft fracture that is exhibiting delayed union. This includes situations where imaging or clinical assessment indicates the bone is not consolidating within the typical timeframe for healing.

• Ensure documentation clearly states "delayed healing" for a closed fracture.
• Verify that the encounter is subsequent to the initial treatment of the fracture.
• Avoid using this code if the fracture site or type is specified; instead, use a more specific S52.2_ code.