Coronary artery aneurysm and dissection
- I25.4 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
- The 2025 edition of ICD-10-CM I25.4 became effective on October 1, 2024.
- This is the American ICD-10-CM version of I25.4 – other international versions of ICD-10 I25.4 may differ.
The following code(s) above I25.4 contain annotation back-references
that may be applicable to I25.4:
- I00-I99 Diseases of the circulatory system
- I20-I25 Ischemic heart diseases
- I25 Chronic ischemic heart disease
Clinical Information
- Abnormal balloon- or sac-like dilatation in the wall of coronary vessels. Most coronary aneurysms are due to coronary atherosclerosis, and the rest are due to inflammatory diseases, such as kawasaki disease.
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
- 2024 (effective 10/1/2023): No change
- 2025 (effective 10/1/2024): No change
Code annotations containing back-references to I25.4:
- Type 2 Excludes: I72, I77.0