Unsp fx shaft of unsp ulna, subs for clos fx w nonunion

This code signifies a fracture of the main part (shaft) of the ulna, where the specific location on the ulna is not documented. The fracture has failed to heal properly (nonunion), and the patient is presenting for follow-up care after the initial treatment of a closed fracture.

Use this code for patients presenting for subsequent treatment of an ulnar shaft fracture that has not united, when the specific site of the fracture on the ulna is not specified in the medical record. This applies to closed fractures only, indicating the skin was intact at the time of injury.

• Ensure documentation clearly states "nonunion" for subsequent encounters.
• Only use this code when the specific location of the ulnar shaft fracture is not documented.
• Verify the encounter is for subsequent care, not the initial treatment.