I.C.9

Chapter 9: Diseases of the Circulatory System (I00-I99)

This is a section heading — the guidance lives in the subsections below.

In this section

I.C.9.aHypertension
I.C.9.bAtherosclerotic Coronary Artery Disease and Angina
I.C.9.cIntraoperative and Postprocedural Cerebrovascular Accident
I.C.9.dSequelae of Cerebrovascular Disease
I.C.9.eAcute myocardial infarction (AMI)

ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026 (effective October 1, 2025). Published by CMS and NCHS. Reproduced for reference — always verify against the official CMS release.