ICD-10 Code E83.52 – Hypercalcemia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E83.52 – Hypercalcemia
What it is
Hypercalcemia means the calcium level in the blood is higher than normal. Use this code when documentation identifies elevated serum calcium as the diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Patients may have nonspecific findings such as fatigue, weakness, constipation, nausea, confusion, or dehydration, but the diagnosis should be supported by documented laboratory evidence.
When to use this code
Use E83.52 when the provider documents hypercalcemia as a current condition, whether it is incidental, symptomatic, or part of a known disorder. Code it when the chart clearly states elevated calcium and the clinician is treating or evaluating that finding. Check documentation if the cause is also specified.
Do not use for
Do not use this code for normal calcium results or for vague symptoms without documented hypercalcemia. If the record describes a different calcium disorder, use the code that matches the documented condition.
Coding tip
Confirm that hypercalcemia is explicitly documented, and code any documented underlying cause separately when instructed by the record.