Rheumatoid arthritis w/o rheumatoid factor, right shoulder

This code signifies a diagnosis of rheumatoid arthritis affecting the right shoulder joint, specifically in cases where serological testing for rheumatoid factor (RF) is negative. It indicates an inflammatory autoimmune condition primarily impacting the synovial lining of the joint, leading to pain, swelling, and potential joint damage.

Apply this code when documentation clearly states a diagnosis of rheumatoid arthritis of the right shoulder and explicitly notes the absence of rheumatoid factor. This is typically supported by a physician's diagnostic statement, imaging reports confirming joint involvement, and laboratory results indicating a negative RF.

• Ensure documentation specifies "without rheumatoid factor" to differentiate from seropositive rheumatoid arthritis.
• Verify the laterality of the shoulder (right) is clearly stated in the medical record.
• Consider sequencing this code with other relevant codes for manifestations or complications of rheumatoid arthritis.