Discoid meniscus

This code represents an anatomical anomaly of the meniscus, specifically a discoid (disc-shaped) morphology, which is typically congenital. Unlike the normal crescent shape, a discoid meniscus is thicker and more circular, often leading to mechanical symptoms within the knee joint.

Use this code when documentation explicitly states a diagnosis of discoid meniscus, whether symptomatic or incidentally discovered. This diagnosis is often made based on MRI findings or arthroscopic visualization. Supporting documentation should clearly identify the abnormal meniscal shape.

• Do not confuse with meniscal tears or other meniscal derangements unless discoid meniscus is also present and documented.
• Specify laterality (e.g., right, left, bilateral) if documented, using appropriate subcodes.
• If a discoid meniscus is symptomatic and requires surgical intervention (e.g., meniscectomy, meniscoplasty), code the discoid meniscus as the underlying condition.