Rheu arthrit w rheu factor of left ank/ft w/o org/sys involv

This diagnosis code identifies seropositive rheumatoid arthritis affecting the left ankle and foot, specifically when there is no systemic involvement of other organs or body systems. It indicates an inflammatory autoimmune condition primarily localized to the specified joints.

Apply this code when documentation confirms a diagnosis of rheumatoid arthritis with a positive rheumatoid factor, and the patient's symptoms and objective findings are confined to the left ankle and foot. Ensure the medical record explicitly states the absence of extra-articular manifestations or organ system involvement.

• Always verify the laterality (left vs. right) and the specific joint(s) affected.
• Confirm the presence of a positive rheumatoid factor (seropositive RA) as documented in laboratory results or physician notes.
• Do not use this code if there is any mention of systemic complications or organ involvement; a more specific code from the M05.7- series would be appropriate.