Coronary Artery Calcification ICD-10 Code: I25.10
Last updated: January 31, 2025
The ICD-10 code for coronary artery calcification is I25.10 (Atherosclerotic heart disease of native coronary artery without angina pectoris). This captures coronary atherosclerosis identified by calcium scoring or imaging.
Primary Code Details
| Code | Description | Billable |
|---|---|---|
| I25.10 | Atherosclerotic heart disease of native coronary artery without angina pectoris | Yes |
Related Codes
| Code | Description | Billable |
|---|---|---|
| I25.111 | Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm | Yes |
| I25.119 | Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris | Yes |
| I25.5 | Ischemic cardiomyopathy | Yes |
| I25.89 | Other forms of chronic ischemic heart disease | Yes |
| Z13.6 | Encounter for screening for cardiovascular disorders | Yes |
Documentation Requirements
- Document calcium score if available (Agatston score)
- Note if angina symptoms are present
- Document risk factors (HTN, DM, smoking, family history)
- Note extent of calcification if specified (mild, moderate, severe)
Common Coding Scenarios
Documentation:
"CT chest shows moderate coronary artery calcification. No cardiac symptoms."
Code:
I25.10 - Atherosclerotic heart disease of native coronary artery without angina pectoris
Rationale:
Use I25.10 for coronary atherosclerosis/calcification without angina symptoms.
Documentation:
"Coronary calcium score of 400. Patient reports exertional chest pain consistent with angina."
Code:
I25.119 - Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris
Rationale:
When angina is present, use the appropriate I25.11x code that captures both CAD and angina.
Frequently Asked Questions
I25.10 (Atherosclerotic heart disease of native coronary artery without angina pectoris) is the primary code for coronary artery calcification without symptoms. If angina is present, use I25.11x codes.
Code I25.10 for atherosclerotic heart disease. The specific calcium score (Agatston score) should be documented in the medical record but does not change the ICD-10 code assignment.
Coronary artery calcification indicates atherosclerosis and is coded as CAD/atherosclerotic heart disease (I25.10). The presence of calcification confirms atherosclerotic changes.
Related Resources
Last updated: January 2025. Code data reflects ICD-10-CM 2026 version. This guide is for educational purposes only. Always verify codes against current official guidelines.