Patient presents with inflammatory polyarthritis, characterized by persistent joint pain, swelling, and stiffness affecting multiple joints.  Differential diagnoses considered include rheumatoid arthritis, psoriatic arthritis, reactive arthritis, and enteropathic arthritis.  Onset of symptoms was gradual over [timeframe], initially affecting the [affected joints - e.g., small joints of the hands and feet] and subsequently involving [other affected joints].  Morning stiffness lasting greater than [duration] is reported.  Patient exhibits [range of motion limitations - e.g., limited range of motion in the affected joints].  Physical examination reveals [objective findings - e.g., joint tenderness, warmth, erythema, and synovitis].  Laboratory investigations include [tests ordered - e.g., complete blood count (CBC), erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), rheumatoid factor (RF), anti-cyclic citrullinated peptide (anti-CCP) antibodies, HLA-B27].  Imaging studies, such as [imaging performed - e.g., x-ray, ultrasound, MRI] of the affected joints, may be ordered to assess for joint damage and erosions.  Assessment includes inflammatory polyarthritis with differential diagnosis pending further investigation.  Plan includes initiating treatment with [medications - e.g., nonsteroidal anti-inflammatory drugs (NSAIDs), disease-modifying antirheumatic drugs (DMARDs) such as methotrexate], physical therapy referral for range of motion exercises and pain management, and patient education regarding disease management and prognosis.  Follow-up appointment scheduled in [timeframe] to review laboratory and imaging results and adjust treatment plan as needed.  ICD-10 code M13.9, Arthropathy, unspecified, is provisionally assigned pending definitive diagnosis.  Medical billing codes will be finalized based on the confirmed diagnosis and treatment provided.