Juvenile rheumatoid arthritis w systemic onset, unsp elbow

This code signifies a chronic inflammatory autoimmune disease affecting children, characterized by arthritis in one or more joints, accompanied by systemic features such as fever, rash, lymphadenopathy, hepatosplenomegaly, and serositis. Specifically, it indicates that the elbow joint is affected, but the laterality (left or right) is not specified in the medical record.

Use this code when documentation confirms a diagnosis of systemic onset juvenile rheumatoid arthritis (JRA) and explicitly states elbow involvement without specifying which elbow. This diagnosis is typically made by a pediatric rheumatologist based on clinical presentation, laboratory findings (e.g., elevated inflammatory markers), and exclusion of other conditions.

• Ensure the documentation clearly specifies "systemic onset" JRA, as other types of JRA are coded differently.
• Avoid using this code if the laterality of the affected elbow (left or right) is documented; instead, select a more specific code.
• Always sequence this code as the primary diagnosis when it is the reason for the encounter, followed by codes for any associated systemic manifestations.