ICD Code E83.31

ICD code E83.31 is familial hypophosphatemia, a genetic disorder characterized by low levels of phosphate in the blood due to impaired kidney reabsorption, leading to bone weakness and growth problems.

1. Evidence of low serum phosphate levels not attributable to dietary deficiency or malabsorption

2. Family history of hypophosphatemia or related metabolic bone disease

3. Clinical signs of rickets or osteomalacia, such as bone pain, skeletal deformities, or delayed growth in children

4. Laboratory findings of renal phosphate wasting (elevated urinary phosphate excretion)

5. Normal or low levels of 1,25-dihydroxyvitamin D despite hypophosphatemia

6. Absence of secondary causes of hypophosphatemia, such as tumor-induced osteomalacia or medication effects

7. Genetic confirmation of mutations in genes associated with phosphate regulation (e.g., PHEX, FGF23, DMP1, ENPP1), if available

Relevant CPT codes that may be used to treat ICD code E83.31 include:

- 82306 (Vitamin D; 25 hydroxy, includes fraction(s), if performed)

- 82310 (Calcium; total)

- 82374 (Magnesium)

- 84100 (Phosphorus inorganic (phosphate))

- 80069 (Renal function panel)

- 99201–99499 (Evaluation and Management services)

- 96365–96379 (Intravenous infusion and injection administration)

- 96372 (Therapeutic, prophylactic, or diagnostic injection; subcutaneous or intramuscular)

These CPT codes should be selected based on the specific services rendered for ICD code E83.31.

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