Rheumatoid polyneurop w rheumatoid arthritis of unsp knee

This code signifies a neurological complication of rheumatoid arthritis (RA) affecting multiple peripheral nerves (polyneuropathy), specifically when the RA itself involves an unspecified knee. It indicates a direct link between the systemic autoimmune disease and the nerve damage.

Apply this code when documentation clearly states a diagnosis of rheumatoid polyneuropathy in a patient with rheumatoid arthritis, and the knee is identified as an affected joint but the laterality is not specified. Supporting documentation would include physician notes detailing both the RA diagnosis, the polyneuropathy, and the involvement of the knee.

• Ensure the documentation explicitly links the polyneuropathy to the rheumatoid arthritis.
• Do not use this code if the knee involvement is not documented or if the polyneuropathy is due to another cause.
• Always attempt to clarify laterality of the knee if possible to use a more specific code.