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v1.0.0
ICD-10 Guide
DiagnosesHypercalcemia

Hypercalcemia

ICD-10 Coding for Hypercalcemia(E83.52)

PRIMARY SPECIALTYOncology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Hypercalcemia?
Essential facts and insights about Hypercalcemia

Key Clinical Considerations:

  • Elevated serum calcium levels (>10.5 mg/dL)
  • Symptoms may include nausea, vomiting, constipation, confusion, and fatigue
  • Physical exam may reveal dehydration, muscle weakness, and altered mental status

Clinical Information

Clinical Criteria & Documentation Requirements

  • Document serum calcium levels and symptoms
  • Use specific terms like 'hypercalcemia' and 'malignancy-related hypercalcemia'
  • Examples include noting the cause of hypercalcemia and associated symptoms

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for coding hypercalcemia related to malignancy versus primary hyperparathyroidism.
  • Common errors include misclassifying the cause of hypercalcemia.

Code Exclusions

Important Exclusions

  • Primary hyperparathyroidism
  • Other metabolic disorders causing hypercalcemia

Related ICD-10 Codes

Primary Codes
E83.52
Hypercalcemia
C79.51
Secondary malignant neoplasm of bone
Ancillary Codes
C79.51
E21.0
Differential Codes
E83.5

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Oncology

Specialty Applications

  • Oncology patients with malignancies causing hypercalcemia
  • Inpatient and outpatient clinical settings

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Include lab results, clinical findings, and treatment plans.

Billing considerations?

Ensure accurate coding to reflect the underlying cause and associated conditions.