Other specified rheumatoid arthritis, right knee

This code signifies a diagnosis of rheumatoid arthritis affecting the right knee, where the specific type of rheumatoid arthritis is not otherwise classified. It indicates an inflammatory autoimmune condition primarily impacting the synovial lining of the right knee joint, leading to pain, swelling, and potential joint damage.

Use this code when documentation specifies rheumatoid arthritis in the right knee, but the physician has not identified it as seropositive, seronegative, or with rheumatoid factor. This code is appropriate for cases where the specific subtype of rheumatoid arthritis is not further elaborated beyond its presence in the right knee.

• Ensure documentation clearly specifies "right knee" as the affected joint.
• Do not use this code if the documentation indicates seropositive or seronegative rheumatoid arthritis; use the more specific codes from the M05 or M06.0-M06.2 series.
• Always review the medical record for any additional manifestations or complications of rheumatoid arthritis that may require additional coding.