Juvenile idiopathic arthritis JIA diagnosis established in a patient presenting with chronic joint pain, stiffness, and swelling.  Onset of symptoms noted (date).  Patient exhibits (number) of affected joints, consistent with polyarticular juvenile idiopathic arthritis.  Symptoms include morning stiffness lasting (duration), limited range of motion in (affected joints), and noticeable joint inflammation characterized by warmth, erythema, and tenderness upon palpation.  Laboratory findings reveal elevated inflammatory markers, including (specify e.g., erythrocyte sedimentation rate ESR, C-reactive protein CRP).  Antinuclear antibody ANA titer is (positive/negative).  Rheumatoid factor RF is (positive/negative).  Differential diagnosis considered juvenile dermatomyositis, systemic lupus erythematosus SLE, and Lyme disease.  These were ruled out based on clinical presentation and laboratory results.  Initial treatment plan includes nonsteroidal anti-inflammatory drugs NSAIDs for pain management and disease-modifying antirheumatic drugs DMARDs, specifically (medication name), to control disease progression.  Physical therapy and occupational therapy referrals made to improve joint function and mobility. Patient education provided regarding medication administration, potential side effects, and importance of adherence to the treatment plan.  Follow-up appointment scheduled in (timeframe) to monitor treatment response and adjust therapy as needed.  ICD-10 code M08.00 Juvenile rheumatoid arthritis of unspecified type is used for billing and coding purposes.  Further investigations may be necessary to determine specific JIA subtype, such as oligoarticular JIA or polyarticular JIA.