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ICD-10 Guide
DiagnosesAbnormal Calcium Score

Abnormal Calcium Score

ICD-10 Coding for Abnormal Calcium Score(R93.1, I25.84)

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

Diagnosis Overview

What is Abnormal Calcium Score?
Essential facts and insights about Abnormal Calcium Score

Key Clinical Considerations:

  • Presence of high levels of calcium in coronary arteries
  • Detection of calcium deposits in the heart through CT scanning

Clinical Information

Clinical Criteria & Documentation Requirements

  • Detailed results of the CT scan showing calcium deposits
  • Specific location of the calcium deposits in the coronary arteries
  • Clinical significance of the abnormal calcium score

Coding Guidelines

Usage Guidelines & Examples

  • R93.1 is used for abnormal findings on diagnostic imaging of heart and coronary circulation
  • I25.84 is used for coronary atherosclerosis due to calcified coronary lesion
  • Selection of the correct code depends on the specific clinical scenario and findings

Code Exclusions

Important Exclusions

  • Conditions where calcium deposits are found outside the coronary arteries
  • Scenarios where the calcium score is within the normal range

Related ICD-10 Codes

Primary Codes
R93.1
Abnormal findings on diagnostic imaging of heart and coronary circulation
I25.84
Coronary atherosclerosis due to calcified coronary lesion
Ancillary Codes
Z00.6
R93.1
Differential Codes
I25.84
I25.83

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Cardiology

Specialty Applications

  • Patients with detected calcium deposits in the coronary arteries
  • Scenarios where there is a high risk of coronary artery disease

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

Template 1

Patient's CT scan revealed high levels of calcium in the coronary arteries, indicating an abnormal calcium score.

Template 2

Calcium deposits were detected in the coronary arteries, leading to a diagnosis of coronary atherosclerosis due to calcified coronary lesion.

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

What is an abnormal calcium score?

An abnormal calcium score refers to the presence of high levels of calcium in the coronary arteries, which can be a sign of coronary artery disease.

When should this code be used?

These codes should be used when diagnostic imaging reveals abnormal findings in the heart and coronary circulation, specifically high levels of calcium or calcified lesions.