Patient presents with symptoms suggestive of hypercalcemia, including fatigue, muscle weakness, nausea, constipation, and confusion.  Review of systems reveals potential contributing factors such as recent bone fracture, history of parathyroid disorders, malignancy including breast cancer, lung cancer, and multiple myeloma, or prolonged immobilization.  Physical examination findings may include dehydration, decreased deep tendon reflexes, and abdominal tenderness.  Laboratory results confirm elevated serum calcium levels exceeding the normal range.  Differential diagnosis includes primary hyperparathyroidism, malignancy-associated hypercalcemia, vitamin D toxicity, and other causes of hypercalcemia.  Initial management includes intravenous hydration with normal saline to promote calcium excretion.  Further investigations such as parathyroid hormone level, serum creatinine, vitamin D levels, and chest x-ray are ordered to determine the underlying etiology.  Treatment plan will be tailored to the specific cause of hypercalcemia and may include medications such as bisphosphonates, calcitonin, or glucocorticoids.  Patient education provided regarding dietary modifications including calcium restriction and increased fluid intake.  Follow-up appointment scheduled to monitor serum calcium levels and assess treatment response.  ICD-10 code E83.5 consistent with the diagnosis of hypercalcemia.  CPT codes for laboratory tests and procedures will be documented accordingly for medical billing purposes.