Cystic meniscus, anterior horn of lat mensc, left knee

This code signifies the presence of a fluid-filled sac (cyst) within the anterior portion of the lateral meniscus in the left knee. This condition can cause pain, swelling, and mechanical symptoms due to meniscal degeneration or trauma.

Apply this code when documentation explicitly states a cystic lesion affecting the anterior horn of the lateral meniscus of the left knee. Supporting documentation typically includes MRI reports, arthroscopy findings, or physician notes detailing the location and nature of the meniscal pathology.

• Ensure the documentation specifies "anterior horn" and "lateral meniscus" for the left knee.
• Do not confuse with meniscal tears without cyst formation, or cysts in other meniscal regions (e.g., posterior horn, medial meniscus).
• Consider sequencing this code with codes for underlying meniscal tears or other knee pathologies if present and documented.