Rheumatoid myopathy with rheumatoid arthritis of unsp hip

This code signifies a muscular disorder directly caused by rheumatoid arthritis, specifically affecting an unspecified hip. It indicates the presence of both rheumatoid arthritis and a related myopathy, where the muscle weakness or pain is a direct consequence of the underlying autoimmune condition.

Use this code when documentation clearly states rheumatoid myopathy in a patient with rheumatoid arthritis, with the hip being the affected joint. This typically applies when a physician has diagnosed a muscular complication secondary to RA, localized to the hip region, and has not specified laterality.

• Ensure the documentation explicitly links the myopathy to rheumatoid arthritis and specifies hip involvement.
• Avoid using this code if the myopathy is due to other causes (e.g., drug-induced, metabolic) or if the hip involvement is not clearly stated.
• Consider sequencing this code after the primary rheumatoid arthritis code (e.g., M05.xx) if the myopathy is considered a manifestation.