Stress fx, unsp tibia and fibula, subs for fx w delay heal

This code signifies a stress fracture affecting an unspecified bone of the lower leg (tibia or fibula) that is currently in a healing phase, but the healing process is taking longer than expected. It indicates that the patient is receiving ongoing care for this specific fracture due to delayed union.

Use this code for follow-up encounters where a patient is being treated for a stress fracture of the tibia or fibula, and the physician's documentation explicitly states "delayed healing," "non-union," or similar terminology indicating a prolonged recovery. This applies when the patient is actively receiving treatment for the delayed healing, such as casting changes, physical therapy, or medication adjustments.

• Ensure documentation clearly specifies "delayed healing" for the stress fracture; otherwise, a routine subsequent encounter code might be more appropriate.
• Confirm the fracture is indeed a stress fracture, not an acute traumatic fracture, as different code categories apply.
• Always sequence this code as the primary diagnosis if the delayed healing of the stress fracture is the main reason for the encounter.