Patient presents with hyperphosphatemia, an elevated serum phosphate level exceeding the normal range.  Differential diagnosis includes chronic kidney disease, acute kidney injury, tumor lysis syndrome, hypoparathyroidism, vitamin D toxicity, and rhabdomyolysis.  Patient's phosphate level is [insert value] mgdL.  Clinical manifestations may include symptoms such as muscle cramps, tetany, bone pain, and calcification of soft tissues.  In severe cases, cardiac arrhythmias and seizures may occur.  Assessment includes review of medications, dietary history, and relevant laboratory data including calcium, parathyroid hormone, creatinine, and vitamin D levels.  Treatment for hyperphosphatemia focuses on addressing the underlying cause.  Phosphate binders, such as calcium acetate, sevelamer carbonate, or lanthanum carbonate, may be prescribed to reduce phosphate absorption in the gastrointestinal tract.  Dietary phosphate restriction is often recommended.  Patient education regarding low-phosphate diet and medication adherence is crucial.  Monitoring of serum phosphate, calcium, and kidney function is essential to assess treatment efficacy and prevent complications.  ICD-10 code E83.5 is appropriate for disorders of phosphorus metabolism.  CPT codes for laboratory testing include 82330 for phosphorus and 82306 for calcium.  Continued monitoring and follow-up care are necessary to manage hyperphosphatemia and prevent long-term sequelae.