Patient presents with complaints of right shoulder pain consistent with osteoarthritis.  Symptoms include progressively worsening pain, stiffness, limited range of motion, crepitus on movement, and functional impairment impacting activities of daily living.  Onset of symptoms was gradual, reported as approximately six months ago, initially attributed to overexertion.  Pain is described as a deep, aching sensation, exacerbated by activity and relieved by rest.  Patient denies any specific injury or trauma to the right shoulder.  Physical examination reveals tenderness to palpation over the right glenohumeral joint, reduced active and passive range of motion with notable limitations in abduction and external rotation, and palpable crepitus during shoulder movement.  Radiographic imaging of the right shoulder demonstrates joint space narrowing, osteophyte formation, and subchondral sclerosis, confirming the diagnosis of right shoulder osteoarthritis.  Differential diagnoses considered included rotator cuff tear, frozen shoulder, and cervical radiculopathy, but were ruled out based on clinical findings and imaging results.  Treatment plan includes conservative management with nonsteroidal anti-inflammatory drugs (NSAIDs) for pain management, physical therapy focusing on range of motion exercises and strengthening of surrounding musculature, and patient education on activity modification to avoid exacerbating movements.  Patient will follow up in four weeks to assess response to treatment.  ICD-10 code M19.01, Right shoulder osteoarthritis, primary, is assigned.  Future treatment considerations may include corticosteroid injections or referral to orthopedics for surgical intervention if conservative measures fail to provide adequate relief.