Cystic meniscus, unspecified lateral meniscus, right knee

This code signifies the presence of a fluid-filled sac (cyst) within the lateral meniscus of the right knee. It indicates that the specific type or characteristics of the cystic meniscus are not documented. This condition can cause pain, swelling, and mechanical symptoms in the knee joint.

Apply this code when documentation confirms a cystic lesion of the right lateral meniscus, but further details regarding the cyst's nature (e.g., parameniscal, intrameniscal) are absent. This is appropriate for initial diagnoses or when imaging reports identify a lateral meniscal cyst without further specification.

• Ensure the documentation explicitly states "right knee" and "lateral meniscus."
• If the laterality or specific meniscus is not documented, consider using an unspecified knee or unspecified meniscus code.
• Do not use this code if the documentation specifies a parameniscal cyst or an intrameniscal cyst, as more specific codes exist.