Oth meniscus derangements, oth lateral meniscus, right knee

This code signifies a non-traumatic, unspecified derangement or tear affecting the lateral meniscus of the right knee, excluding acute or bucket-handle tears. It indicates a chronic or degenerative issue with the lateral meniscal cartilage that does not fit more specific classifications.

Use this code for documentation indicating a "degenerative lateral meniscus tear, right knee," "chronic lateral meniscal derangement, right knee," or "other lateral meniscal pathology, right knee" when the specific type of tear (e.g., bucket-handle, acute) is not documented. Supporting documentation includes MRI reports, arthroscopy notes, and physician's clinical assessments.

• Differentiate from acute tears (M23.2 series) and specific tear types like bucket-handle (M23.32-).
• Ensure laterality (right knee) is clearly documented.
• Avoid using this code if a more specific meniscal tear type or cause (e.g., traumatic) is identified.