Cystic meniscus, other lateral meniscus, left knee

This code identifies a cystic lesion affecting the lateral meniscus of the left knee. A meniscal cyst is typically a benign, fluid-filled sac that forms adjacent to or within the meniscus, often associated with a meniscal tear.

Apply this code when documentation specifies a cystic meniscus located in the lateral compartment of the left knee. This diagnosis is commonly made following imaging studies such as MRI, which can confirm the presence and location of the cyst.

• Ensure the documentation clearly specifies "cystic meniscus" and not just a meniscal tear without cyst formation.
• Verify the laterality (left knee) and the specific meniscal involvement (lateral).
• Consider co-reporting with a meniscal tear code if the cyst is associated with a documented tear.