Other juvenile arthritis, left knee

This code signifies a diagnosis of juvenile arthritis affecting the left knee, where the specific type of juvenile arthritis is not otherwise classified. This encompasses various forms of chronic inflammatory joint disease with onset before 16 years of age, presenting with symptoms like pain, swelling, and limited range of motion in the left knee.

Apply this code when documentation clearly indicates juvenile arthritis impacting the left knee, but the physician has not specified a more precise subtype (e.g., juvenile rheumatoid arthritis, juvenile psoriatic arthritis). Supporting documentation would include physician notes detailing the diagnosis of juvenile arthritis, laterality of the affected knee, and the absence of a more specific diagnostic code.

• Ensure the documentation explicitly states "left knee" to justify the laterality.
• Always search for a more specific juvenile arthritis code before resorting to this "other" category.
• Verify the patient's age at diagnosis to confirm it meets the criteria for juvenile arthritis (onset before 16 years).