Tibial collateral bursitis, unspecified leg

This code describes inflammation of the tibial collateral bursa, also known as Pellegrini-Stieda syndrome, affecting an unspecified leg. This condition typically involves pain, swelling, and tenderness along the medial aspect of the knee, often at the insertion of the medial collateral ligament. It can result from trauma or overuse.

Use this code when documentation specifies tibial collateral bursitis or Pellegrini-Stieda syndrome without laterality (left or right leg). This diagnosis is often supported by physical examination findings of localized tenderness and pain with knee movement, and sometimes by imaging studies like MRI showing bursal inflammation.

• Ensure documentation clearly states "unspecified leg" or does not specify laterality.
• Avoid using this code if laterality (left or right) is documented; instead, use M76.41 or M76.42.
• Consider sequencing this code after any traumatic injury if the bursitis is a direct result of the trauma.