Monoarthritis, not elsewhere classified, right hip

This code signifies inflammation of a single joint (monoarthritis) affecting the right hip, where the underlying cause is not specified or classifiable under more specific diagnostic codes. It indicates an inflammatory process localized to the right hip joint without an identified systemic or infectious etiology.

Apply this code when documentation clearly states "monoarthritis of the right hip" and no further specific diagnosis (e.g., rheumatoid arthritis, gout, infectious arthritis) is provided or confirmed. This code is appropriate for cases of idiopathic or unspecified inflammatory arthritis affecting only the right hip.

• Ensure documentation explicitly states "right hip" to justify the laterality.
• Always search for a more specific diagnosis if available (e.g., infectious, crystal-induced, or autoimmune arthritis).
• Do not use this code if the arthritis is known to be polyarticular or affects other joints.