Palindromic rheumatism, right ankle and foot

This code signifies a diagnosis of palindromic rheumatism affecting the right ankle and foot. Palindromic rheumatism is a rare, episodic inflammatory arthritis characterized by recurrent, acute attacks of joint pain and swelling that resolve completely within days, often without residual damage.

Apply this code when documentation clearly indicates a diagnosis of palindromic rheumatism specifically localized to the right ankle and/or foot. This diagnosis is typically made based on clinical presentation, exclusion of other inflammatory arthropathies, and often supported by serological markers like rheumatoid factor or anti-CCP antibodies, even if negative.

• Ensure laterality is clearly documented as "right" for the ankle and foot.
• Distinguish from other inflammatory arthropathies like rheumatoid arthritis or gout, which have different ICD-10-CM codes.
• If multiple sites are affected, use additional codes to specify all involved joints.