I25.110 — Atherosclerotic heart disease of native coronary artery with unstable angina pectoris

I25.110

ICD-10 Chapter 9: Circulatory System — illustrative image — Chapter 9: Diseases of the circulatory system (I00–I99) — illustrative image

What this code means

Coronary artery disease with unstable angina: chest pain occurring at rest or worsening, signalling an unstable plaque.

Also called: unstable angina, atherosclerotic heart disease with unstable angina.

When this code is used

Used for atherosclerotic heart disease of a native coronary artery with unstable angina pectoris.

Where it sits in ICD-10-CM

Code I25.110 belongs to Chapter 9: Diseases of the circulatory system, which covers codes I00–I99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Related symptoms

Chest pain

Related anatomy

Heart

Frequently asked questions

What is ICD-10-CM code I25.110?

I25.110 is the ICD-10-CM diagnosis code for “Atherosclerotic heart disease of native coronary artery with unstable angina pectoris”. Coronary artery disease with unstable angina: chest pain occurring at rest or worsening, signalling an unstable plaque.

When is code I25.110 used?

Used for atherosclerotic heart disease of a native coronary artery with unstable angina pectoris. It belongs to Chapter 9 of ICD-10-CM (Diseases of the circulatory system).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.