Rheumatoid arthritis without rheumatoid factor, right wrist

This code signifies a chronic autoimmune inflammatory condition affecting the synovial lining of the right wrist joint, specifically in the absence of detectable rheumatoid factor (RF) in the patient's blood. It indicates seronegative rheumatoid arthritis localized to a single joint.

Apply this code when documentation clearly states a diagnosis of seronegative rheumatoid arthritis affecting the right wrist. Supporting clinical evidence would include joint pain, swelling, stiffness, and imaging findings consistent with RA, alongside negative RF test results.

• Ensure documentation explicitly states "seronegative" or "without rheumatoid factor" to differentiate from seropositive RA.
• Verify the laterality (right) and specific joint (wrist) are clearly documented.
• Do not use this code if the rheumatoid factor status is unknown or if other joints are also affected (unless coded separately).