Unsp fx low end unsp ulna, 7thN

This code describes a situation where a patient has an unhealed fracture (nonunion) of the lower part of the ulna, the bone on the pinky-finger side of the forearm. This specific nonunion is a complication following an open fracture, meaning the bone broke through the skin, and was classified as a severe type (IIIA, IIIB, or IIIC) at the time of the initial injury. The exact location of the fracture on the lower ulna is not specified.

Use this code for follow-up encounters when a patient is being treated for a nonunion of a previously sustained, unspecified open fracture of the distal ulna. This applies when the initial open fracture was documented as Gustilo-Anderson type IIIA, IIIB, or IIIC. This code is appropriate when the specific site of the fracture on the lower ulna is not further detailed in the medical record.

• Ensure documentation clearly states "nonunion" as the reason for the current encounter.
• Verify that the original injury was an open fracture of the distal ulna, specifically documented as Gustilo-Anderson type IIIA, IIIB, or IIIC.
• This code is for an unspecified lower end ulna fracture; if a more specific site (e.g., styloid process) is documented, a more precise code should be sought.