Angina
Also known as: Angina pectoris, unspecified · Syndrome X (Cardiac)
General information only. Anpheros does not diagnose and does not recommend treatment. Talk to a doctor or pharmacist about your situation. In an emergency, call 112 (or your local emergency number).
In short
Angina pectoris is chest pain or discomfort that occurs when there is insufficient blood flow to the heart muscle, which requires the oxygen carried by the blood. This condition, which is a symptom of coronary artery disease, can feel like pressure, a squeezing pain, or indigestion, and may also cause pain in the shoulders, arms, neck, jaw, or back. The three types of angina are stable angina, which has a regular pattern and occurs when the heart works harder; unstable angina, which is the most dangerous, lacks a pattern, and can indicate an impending heart attack; and variant angina, which is rare and occurs during rest.
Source: MedlinePlus, National Library of Medicine.
AI-generated summary of the sources cited on this page, checked automatically against them. Not reviewed by a clinician; not medical advice.
Codes
Description
Angina is chest pain or discomfort you feel when there is not enough blood flow to your heart muscle. Your heart muscle needs the oxygen that the blood carries. Angina may feel like pressure or a squeezing pain in your chest. It may feel like indigestion. You may also feel pain in your shoulders, arms, neck, jaw, or back.
Angina is a symptom of coronary artery disease (CAD), the most common heart disease. CAD happens when a sticky substance called plaque builds up in the arteries that supply blood to the heart, reducing blood flow.
There are three types of angina:
- Stable angina is the most common type. It happens when the heart is working harder than usual. Stable angina has a regular pattern. Rest and medicines usually help.
- Unstable angina is the most dangerous. It does not follow a pattern and can happen without physical exertion. It does not go away with rest or medicine. It is a sign that you could have a heart attack soon.
- Variant angina is rare. It happens when you are resting. Medicines can help.
Not all chest pain or discomfort is angina. If you have chest pain, you should see your health care provider.
NIH: National Heart, Lung, and Blood Institute
Related terms in the cited sources
Medicines with an official indication for this condition
- Ivabradine Treatment
- Ranolazine Treatment
In alphabetical order.
Next to it in ICD-10
- I12Kidney disease caused by high blood pressure
- I13Heart and kidney disease caused by high blood pressure
- I15Secondary hypertension, unspecified
- I21Heart attack (acute myocardial infarction)
- I22Repeat heart attack
- I23Complications soon after a heart attack
Neighbouring codes in the classification, not a medical link.
External resources
Questions
What is the ICD-10 code for Angina?
I20 (WHO, International Classification of Diseases, 10th Revision).
What is the ICD-11 code for Angina?
BA40.Z: Angina pectoris, unspecified (WHO, ICD-11 for Mortality and Morbidity Statistics).
Sources and attribution
- ICD-11 for Mortality and Morbidity Statistics, © World Health Organization, licensed under CC BY-ND 3.0 IGO.
- Source: MedlinePlus, National Library of Medicine.
- Names other than the official source titles: Anpheros translations and plain-language names, made with AI assistance and checked automatically; the source names are in English.
- Source: European Medicines Agency (EMA) — EPAR. © European Medicines Agency.
- ICD-10 codes and titles © World Health Organization. Source: WHO, International Classification of Diseases, 10th Revision (2019).
Anpheros Search catalog 2026.10.5, published 17 October 2026. About the data →
About this page. This page brings together public information from official sources, each cited where it is used. It is not medical advice, it is not a diagnosis, and it does not tell you which treatment to take.
Treatments. Indications are quoted unchanged from official product information (European Medicines Agency, U.S. Food and Drug Administration). They describe what a medicine is approved for, not whether it is right for you. Approved uses can differ between countries. Always read the package leaflet and follow your doctor's or pharmacist's advice.
What people report. Figures marked "reported by Anpheros users" are anonymous counts from at least 20 people who agreed to share them. They show what people report, not what works, and they are not clinical evidence.
Links between terms. "May be associated with" means the link appears in a cited source. It does not mean you have that condition.
In an emergency, call 112 (or your local emergency number). Do not delay seeking medical help because of something you read here.