Incomplete atypical femoral fracture, left leg, sequela

This code signifies a chronic or late effect of an incomplete atypical femoral fracture in the left leg. An atypical femoral fracture is a rare, stress fracture of the femur, often associated with long-term bisphosphonate use. "Incomplete" indicates the fracture does not extend through both cortices of the bone.

Use this code for patients presenting with ongoing issues, complications, or conditions directly resulting from a previously sustained incomplete atypical femoral fracture of the left leg. Documentation should clearly state the "sequela" or "late effect" of the fracture, such as chronic pain, nonunion, malunion, or hardware complications after initial treatment.

• Ensure documentation specifies "incomplete" and "atypical" to differentiate from other femoral fractures.
• The "S" seventh character indicates sequela; do not use for acute or initial encounters.
• Always code the underlying cause of the sequela (e.g., chronic pain, nonunion) in addition to this code, following sequencing guidelines.