Nondisp seg fx shaft of ulna, r arm, 7thM

This code describes a situation where a patient has a fracture in the middle section of their right ulna bone that is not displaced, meaning the bone fragments are still aligned. This specific encounter is for an open fracture (where the skin was broken) that was initially classified as Type I or II, and the fracture has failed to heal properly (nonunion).

This code is used when a patient with a previously treated open segmental ulna shaft fracture (right arm, Type I or II) presents for ongoing management of a nonunion. This would typically be documented during follow-up appointments or admissions for procedures aimed at promoting healing of the nonunion.

• Verify documentation explicitly states "nonunion" and specifies the right arm and ulna shaft.
• Ensure the original fracture was an "open fracture type I or II" and that this is a "subsequent encounter."
• Do not use for initial treatment or for closed fractures; different codes apply for those scenarios.