Patient presents with complaints of left shoulder pain, consistent with left shoulder bursitis.  Symptoms include localized tenderness, pain with movement, particularly abduction and external rotation, and stiffness.  The onset of pain was gradual, reported as approximately two weeks ago, and is exacerbated by overhead activities and sleeping on the affected side.  Patient denies any specific injury or trauma.  Physical examination reveals point tenderness over the subacromial bursa, positive Neer and Hawkins-Kennedy impingement tests, and limited range of motion in the left shoulder.  No crepitus or instability noted.  Differential diagnosis includes rotator cuff tendinitis, adhesive capsulitis, and cervical radiculopathy.  Assessment is left subacromial bursitis.  Plan includes conservative management with NSAIDs for pain and inflammation, ice therapy, and physical therapy referral for range of motion and strengthening exercises.  Patient education provided on activity modification and proper body mechanics.  Follow-up scheduled in four weeks to assess response to treatment.  ICD-10 code M75.51 will be used for Left subacromial bursitis.