Rheumatoid arthritis without rheumatoid factor, left elbow

This code signifies a chronic autoimmune inflammatory disorder affecting the synovial lining of the left elbow joint, specifically in the absence of detectable rheumatoid factor antibodies in the patient's blood. It indicates a seronegative form of rheumatoid arthritis localized to a single joint.

Apply this code when documentation confirms a diagnosis of rheumatoid arthritis affecting the left elbow, and laboratory results explicitly state "rheumatoid factor negative" or "seronegative." This is appropriate for initial diagnoses, exacerbations, or ongoing management of seronegative RA in this specific joint.

• Ensure documentation clearly specifies "left elbow" and "rheumatoid factor negative."
• Do not use if rheumatoid factor status is unknown or positive; use appropriate seropositive codes.
• Consider sequencing with codes for associated symptoms or complications, such as joint pain or deformity, if present.