Oth rheumatoid arthritis w rheumatoid factor of left wrist

This code signifies a diagnosis of rheumatoid arthritis (RA) affecting the left wrist, where the presence of rheumatoid factor (RF) has been confirmed, but the specific type of RA does not fall into other specified categories (e.g., with organ involvement, with vasculitis). It indicates a seropositive, non-specific form of RA localized to a single joint.

Use this code when documentation explicitly states rheumatoid arthritis of the left wrist, positive for rheumatoid factor, and no other specific manifestations (e.g., Felty's syndrome, polyneuropathy) are noted. This code is appropriate for patients presenting with inflammatory arthritis symptoms isolated to the left wrist, with laboratory confirmation of RF.

• Ensure documentation specifies "left wrist" and "rheumatoid factor positive" to support this code.
• Do not use if the RA is specified as juvenile, with organ involvement, or with other specific systemic manifestations; choose a more specific code from the M05 or M06 series.
• Always sequence this code after any underlying systemic condition if applicable, or as the primary diagnosis if the RA of the wrist is the reason for the encounter.