Rheumatoid arthritis

This code represents a chronic, systemic autoimmune disease characterized by inflammation of the synovial lining of joints, leading to progressive joint destruction, deformity, and functional impairment. It primarily affects the small joints of the hands and feet symmetrically, but can also involve larger joints and extra-articular organs.

Assign this code for patients diagnosed with classic or definite rheumatoid arthritis. Documentation should clearly indicate a diagnosis of rheumatoid arthritis, often supported by clinical criteria, laboratory findings (e.g., positive rheumatoid factor, anti-CCP antibodies), and imaging results. This code is appropriate for both initial diagnosis and ongoing management of the condition.

• Do not use this code for juvenile rheumatoid arthritis; refer to the appropriate 720.x series codes.
• Be mindful of laterality if specified in the documentation, though this particular code does not allow for laterality distinction.
• Consider additional codes for manifestations or complications of rheumatoid arthritis, such as organ involvement or specific joint deformities.