Complete transverse atyp femoral fracture, left leg, 7thK

This code signifies a complete fracture of the left femur that extends entirely across the bone, occurring atypically, often associated with long-term bisphosphonate use. The "subsequent encounter" indicates the patient is receiving routine care during the healing phase, but the fracture has failed to unite properly.

Apply this code for follow-up encounters where a patient with a previously diagnosed complete transverse atypical femoral fracture of the left leg is being treated for a confirmed nonunion. Documentation should clearly state the fracture's atypical nature, its complete transverse morphology, location on the left femur, and the ongoing management of a nonunion.

• Ensure documentation specifies "atypical" and "transverse" to differentiate from other femoral fractures.
• Confirm the laterality is explicitly "left leg" to avoid incorrect coding.
• This "K" seventh character indicates nonunion; do not confuse with "D" for routine healing or "P" for malunion.