Incomplete atypical femoral fracture, right leg, sequela

This code signifies a stress fracture of the right femur that has not fully propagated across the bone, often characterized by cortical thickening or a transverse lucency. It represents the long-term effects or complications arising from a previous incomplete atypical femoral fracture. These fractures are typically associated with long-term bisphosphonate use.

Use this code when documenting the residual effects or complications of a previously diagnosed and treated incomplete atypical femoral fracture of the right leg. This applies to follow-up encounters where the patient is still experiencing issues directly related to the prior fracture, such as pain, altered gait, or ongoing monitoring for progression. Documentation should clearly state the "sequela" of the prior fracture.

• Ensure documentation specifies "sequela" to justify the 7th character 'S'.
• Do not use for acute or initial encounters of an incomplete atypical femoral fracture; those would utilize the appropriate 7th character for initial or subsequent encounter.
• Consider co-reporting with codes for underlying conditions, such as long-term bisphosphonate use (Z79.899), if relevant to the sequela.