Other meniscus derangements, unsp medial meniscus, unsp knee

This code represents a general diagnosis for a medial meniscus injury or abnormality that is not further specified as a tear, cyst, or other specific derangement. It indicates a problem with the medial meniscus of the knee where the precise nature of the derangement is unknown or not documented. The affected knee is also unspecified.

Use this code when documentation indicates a medial meniscus derangement but lacks specificity regarding the type of derangement (e.g., "medial meniscal pathology," "medial meniscus injury") and the laterality of the knee is not specified. This code is appropriate when the provider has not identified a specific tear or other defined lesion.

• Avoid using this code if the documentation specifies a tear (e.g., bucket handle, complex, radial) or other specific derangement (e.g., cyst, discoid meniscus).
• Always strive for greater specificity regarding the type of derangement and laterality (right/left knee) if documented, using more precise codes from the M23.3- series.
• Query the provider for more specific details if only "medial meniscus derangement" is documented without further clarification.