Oth rheumatoid arthritis w rheumatoid factor of left elbow

This code signifies a diagnosis of rheumatoid arthritis affecting the left elbow, where the presence of rheumatoid factor (RF) has been confirmed, but the specific type of rheumatoid arthritis does not fit into more specific categories. It indicates an inflammatory, autoimmune condition primarily impacting the synovial lining of the left elbow joint, leading to pain, swelling, and potential joint damage.

Apply this code when documentation explicitly states rheumatoid arthritis of the left elbow, positive for rheumatoid factor, and the physician's diagnosis does not specify a more precise form (e.g., Felty's syndrome, juvenile rheumatoid arthritis). Supporting documentation should include a positive RF test result and clinical findings consistent with RA localized to the left elbow.

• Ensure documentation specifies "left elbow" and "rheumatoid factor positive" to support this code.
• Differentiate from seronegative rheumatoid arthritis (M06.0-) where RF is absent.
• Always sequence this code after any underlying systemic conditions or primary diagnoses if applicable.