I20-I25: Ischaemic heart diseases
I21: Acute myocardial infarction
Acute myocardial infarction, commonly known as a heart attack, is a serious medical condition where the supply of blood to a part of the heart becomes blocked, usually by a blood clot. This blockage can damage or destroy part of the heart muscle. Symptoms typically include chest pain, shortness of breath, fatigue, sweating, and sometimes nausea or vomiting. The pain could often extend to the arm, jaw, or back. The condition occurs when one of the coronary arteries, responsible for supplying blood to the heart muscle, gets blocked. This blockage is typically caused by atherosclerosis, a condition where the arteries narrow due to the build-up of fatty deposits. Heart attacks must be detected and treated as quickly as possible because the condition can progress rapidly, causing long-term damage to the heart and even death. Both genders and all races are susceptible to acute myocardial infarction. Other factors such as age, smoking, high blood pressure, obesity, and diabetes can increase a person's risk of experiencing this condition.
Subcodes of I21:
- I21.0: Acute transmural myocardial infarction of anterior wall
- I21.1: Acute transmural myocardial infarction of inferior wall
- I21.2: Acute transmural myocardial infarction of other sites
- I21.3: Acute transmural myocardial infarction of unspecified site
- I21.4: Acute subendocardial myocardial infarction
- I21.9: Acute myocardial infarction, unspecified
Patient Disclaimer
The information provided on this page is for general educational purposes only. It is not intended for self-diagnosis and does not replace professional medical advice. Always consult your doctor or a qualified healthcare provider with any questions or concerns about your health.
If you see an ICD diagnosis code (e.g., on a medical report), be aware that doctors may also include additional indicators to express diagnostic certainty. Only a healthcare professional can interpret these codes accurately in the context of your individual case.
For a complete understanding of your condition and what the diagnosis means for you, please speak directly with your doctor.