Nondisp assoc transv/post fx unsp acetab, 7thK

This code signifies a fracture of the acetabulum, specifically involving both the transverse and posterior columns, that is not displaced. The fracture has failed to heal properly, resulting in a nonunion, and the patient is presenting for follow-up care related to this ongoing healing complication. The specific side of the acetabulum (left or right) is not documented.

Use this code for a patient who has previously been treated for a nondisplaced transverse-posterior acetabular fracture and is now presenting for a subsequent encounter where imaging or clinical assessment confirms a nonunion. This applies to situations where the fracture site shows no signs of bony bridging or callus formation after an appropriate healing period.

• Ensure documentation clearly states "nonunion" and specifies the "transverse-posterior" columns of the acetabulum.
• Verify that the fracture is explicitly noted as "nondisplaced" and that this is a "subsequent encounter" for care related to the fracture.
• If the laterality (left or right) of the acetabulum is known, a more specific code should be used.