Cystic meniscus, other medial meniscus, unspecified knee

📋Clinical Description

This code signifies the presence of a fluid-filled sac (cyst) within the medial meniscus of the knee, without further specification of laterality. It indicates a degenerative or traumatic lesion affecting the inner crescent-shaped cartilage of the knee joint.

🎯When to Use

Apply this code when documentation confirms a cystic lesion of the medial meniscus, and the specific knee (right or left) is not documented. This diagnosis is often made via MRI or arthroscopy.

💡Coding Tips

Ensure the documentation explicitly states "cystic meniscus" and "medial meniscus."
If laterality (right or left knee) is specified, use the more precise codes M23.031 or M23.032.
Do not confuse with other meniscal tears or derangements without documented cyst formation.

AI-generated reference — verify against official guidelines

Code Hierarchy

▲M23.03Cystic meniscus, other medial meniscus

M23.039(current)

Crosswalks

717.3ApproxICD-9

Same Category

M23Internal derangement of knee M23.0Cystic meniscus M23.00Cystic meniscus, unspecified meniscus M23.000Cystic meniscus, unspecified lateral meniscus, right knee M23.001Cystic meniscus, unspecified lateral meniscus, left knee