Oth meniscus derang, anterior horn of lat mensc, right knee

This diagnosis code signifies a non-traumatic abnormality or disorder affecting the anterior portion of the lateral meniscus in the right knee. This can include conditions like meniscal cysts, degeneration, or other structural derangements not classified as a tear. It indicates a problem with the meniscal tissue itself, rather than an acute injury.

Use this code when documentation specifies a derangement of the anterior horn of the lateral meniscus in the right knee, without an acute tear. This is appropriate for findings such as meniscal degeneration, meniscal cysts, or other non-traumatic meniscal pathologies identified via imaging (e.g., MRI) or arthroscopy. Ensure the laterality (right knee) and specific meniscal horn (anterior lateral) are clearly documented.

• Differentiate from meniscal tears (S83.2- series) or other specified meniscal derangements (M23.3- series).
• Always confirm laterality (right vs. left) and the specific meniscal horn involved.
• If an associated acute injury is present, a traumatic injury code may be primary, with this code used as a secondary diagnosis if the derangement is pre-existing or a separate issue.