Hypervitaminosis D

This code represents a toxic state resulting from excessive intake or absorption of vitamin D, leading to elevated serum calcium levels (hypercalcemia) and potential organ damage. It is characterized by symptoms such as nausea, vomiting, polyuria, and kidney stones, often due to over-supplementation.

Assign this code when documentation clearly indicates a diagnosis of hypervitaminosis D, typically confirmed by laboratory findings showing elevated 25-hydroxyvitamin D levels and hypercalcemia. This diagnosis is often associated with therapeutic overdose or inappropriate high-dose supplementation.

• Differentiate from vitamin D toxicity due to other causes, such as sarcoidosis, which would be coded differently.
• Ensure documentation specifies "hypervitaminosis D" and not just "elevated vitamin D levels" without clinical signs of toxicity.
• Code any associated manifestations, such as hypercalcemia (E83.52) or nephrocalcinosis (N28.0), as secondary diagnoses.