Hypercalcemia

This code represents an abnormally high level of calcium in the blood. Hypercalcemia can range from mild and asymptomatic to severe, leading to significant organ dysfunction affecting the kidneys, bones, gastrointestinal tract, and nervous system. It often indicates an underlying medical condition.

Use this code when documentation explicitly states a diagnosis of hypercalcemia. This often occurs in the context of parathyroid disorders, malignancy, vitamin D toxicity, or certain medications. Supporting documentation would include laboratory results showing elevated serum calcium levels and a physician's diagnostic statement.

• Always code the underlying cause of the hypercalcemia first, if known and documented (e.g., malignancy, hyperparathyroidism).
• Do not code based solely on lab results; a physician's diagnostic statement is required.
• Distinguish from hypocalcemia (E83.51), which represents low calcium levels.