Atypical femoral fracture, unspecified, 7thK

This code signifies a follow-up encounter for an atypical femoral fracture that has not healed properly (nonunion). Atypical femoral fractures are stress fractures of the femur, often associated with long-term bisphosphonate use, characterized by specific radiographic features. The "unspecified" nature indicates the laterality (left or right) of the fracture is not documented.

Use this code for patients presenting for ongoing treatment or evaluation of an atypical femoral fracture that has failed to unite after initial treatment. Documentation should clearly state "atypical femoral fracture," "nonunion," and indicate a subsequent encounter for care related to the fracture. This code is appropriate when the specific femur (e.g., right or left) is not specified in the medical record.

• Ensure documentation explicitly states "nonunion" for this specific fracture type.
• Verify laterality. If specified (e.g., right or left), a more specific code within the M84.75- series should be used.
• This code requires an additional code for any associated complications or underlying conditions, such as long-term bisphosphonate use (e.g., T38.817-).