Iliotibial band syndrome, unspecified leg

This code represents inflammation and pain along the iliotibial band, a thick band of fascia running down the outside of the thigh from the hip to the knee. It typically manifests as lateral knee pain, often exacerbated by repetitive knee flexion and extension, common in runners and cyclists. The "unspecified leg" designation indicates that the laterality (right or left) is not documented.

Use this code when documentation confirms a diagnosis of iliotibial band syndrome but does not specify whether it affects the right or left leg. This often occurs when the provider's note simply states "IT band syndrome" without further detail. Supporting documentation includes physician notes detailing symptoms like lateral knee pain, tenderness over the lateral femoral epicondyle, and a positive Ober's test.

• Avoid this code if laterality is documented; instead, use M76.31 for right leg or M76.32 for left leg.
• Ensure the documentation clearly states "iliotibial band syndrome" or a similar clinical term; do not assume based on symptoms alone.
• Consider any associated activity or injury codes (e.g., activity codes for running) if documented, but sequence the IT band syndrome first as the primary diagnosis.