Patient presents with complaints consistent with rheumatoid arthritis symptoms, including morning stiffness, joint pain, and swelling.  The patient reports experiencing symmetrical joint involvement, primarily affecting the hands and wrists.  Physical examination reveals palpable synovitis and tenderness in the metacarpophalangeal and proximal interphalangeal joints.  Laboratory testing reveals a positive rheumatoid factor (RF) titer.  Based on the patient's presentation, physical exam findings, and positive RF serology, a diagnosis of rheumatoid arthritis is suspected.  Differential diagnoses considered include osteoarthritis, psoriatic arthritis, and systemic lupus erythematosus.  Further investigation may include anti-cyclic citrullinated peptide (anti-CCP) antibody testing, erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP) to aid in confirming the diagnosis and assessing disease activity.  Treatment plan includes initiation of disease-modifying antirheumatic drugs (DMARDs) such as methotrexate, along with nonsteroidal anti-inflammatory drugs (NSAIDs) for symptomatic relief of pain and inflammation.  Patient education regarding the disease process, medication management, and importance of regular follow-up appointments has been provided.  Referral to rheumatology for ongoing management and monitoring of disease progression is recommended.  ICD-10 code M05.xx will be utilized for billing purposes, with specific code selection dependent on the affected joints.  CPT codes for laboratory tests and procedures performed will be documented accordingly.  The patient's response to treatment will be evaluated at subsequent visits, and the treatment plan adjusted as needed.