Rheumatoid arthritis without rheumatoid factor, oth site

This code signifies a diagnosis of rheumatoid arthritis where the rheumatoid factor test is negative, indicating seronegative rheumatoid arthritis. It applies when the specific anatomical site of involvement, beyond a general or unspecified location, is documented. This form of inflammatory arthritis primarily affects the joints, leading to pain, swelling, and potential joint damage.

Use this code when the physician explicitly documents "seronegative rheumatoid arthritis" and specifies a particular joint or body region affected, such as the shoulder, elbow, or ankle, but not a hand or foot. Documentation should clearly state the absence of rheumatoid factor and identify the affected site. This code is appropriate when the condition is chronic and requires ongoing management.

• Ensure the documentation explicitly states "rheumatoid factor negative" or "seronegative rheumatoid arthritis."
• Verify that a specific anatomical site is documented, excluding hand (M06.04-) or foot (M06.07-).
• Consider sequencing this code as a primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis when it contributes to the patient's overall condition.