Plica syndrome, unspecified knee

This code signifies an inflammatory condition of the synovial plica within the knee joint, leading to pain, clicking, or catching sensations. Plica syndrome occurs when these normally pliable folds of synovial tissue become thickened or irritated, often due to overuse or trauma.

Utilize this code when documentation indicates a diagnosis of plica syndrome without specifying the affected knee (e.g., "plica syndrome, knee"). Supporting documentation should include clinical findings consistent with plica irritation, such as localized tenderness, palpable plica, or mechanical symptoms.

• Ensure the documentation clearly states "plica syndrome" and does not specify a laterality (left or right knee).
• If laterality is documented, use the more specific codes (M67.51-M67.53).
• Do not confuse with other knee derangements like meniscal tears or chondromalacia, which have distinct codes.