Patient presents with a chief complaint of excessive thirst (polydipsia), a potential symptom of underlying medical conditions.  Onset, duration, and frequency of increased fluid intake were documented and quantified.  Associated symptoms such as polyuria, nocturia, polyphagia, weight loss, blurred vision, fatigue, and dry mouth were investigated and recorded.  Pertinent medical history, including diabetes mellitus, diabetes insipidus, hypercalcemia, hypokalemia, sickle cell anemia, and medication use (diuretics, antipsychotics), was reviewed.  Family history of related conditions was also explored.  Physical examination included assessment of vital signs, mucous membranes for dryness, and neurological examination for any focal deficits.  Differential diagnosis considers primary polydipsia (psychogenic polydipsia), diabetes mellitus, diabetes insipidus, and other potential causes of excessive thirst.  Initial laboratory workup may include serum glucose, electrolytes, calcium, and urine osmolality to aid in diagnosis.  Treatment plan will be based on the underlying cause of the polydipsia and may involve lifestyle modifications, medication adjustment, or further diagnostic testing as indicated.  Patient education regarding fluid management and follow-up care was provided.  ICD-10 code R63.1 (Polydipsia) is being considered, pending further diagnostic evaluation.  CPT codes for evaluation and management (E/M) services will be selected based on the complexity of the visit and medical decision making.  This documentation supports medical necessity for the services rendered and facilitates accurate billing and coding.