Patient presents with symptoms suggestive of hyponatremia, including [list presenting symptoms, e.g., nausea, headache, confusion, muscle weakness, fatigue, seizures].  Serum sodium level confirmed at [sodium value] mEqL, meeting the diagnostic criteria for hyponatremia.  Assessment includes evaluation for underlying causes, such as fluid overload, diuretic use, syndrome of inappropriate antidiuretic hormone secretion (SIADH), adrenal insufficiency, heart failure, cirrhosis, and renal failure.  Patient's medical history includes [list relevant medical history, e.g., hypertension, diabetes, heart disease].  Current medications include [list current medications].  Physical examination reveals [document relevant physical findings, e.g., orthostatic hypotension, decreased skin turgor, altered mental status].  Differential diagnosis includes pseudohyponatremia and other electrolyte imbalances.  Plan includes [list plan of care, e.g., fluid restriction, electrolyte monitoring, intravenous fluids, medication adjustments, addressing underlying cause].  ICD-10 code E87.1 (hyponatremia) is documented for medical coding and billing purposes. Patient education provided regarding hyponatremia management, including dietary sodium intake and fluid balance. Follow-up appointment scheduled to monitor serum sodium levels and treatment response.  The severity of hyponatremia is documented as [mild, moderate, or severe] based on the sodium level and presenting symptoms.  Treatment approach is consistent with established clinical practice guidelines for hyponatremia treatment and management.