I21.4: Acute subendocardial myocardial infarction
You are having a heart attack.
The heart is supplied with oxygen-rich blood via the coronary arteries. The coronary arteries are blood vessels that run around the outside of the heart. The coronary arteries can get narrow due to deposits of fat and calcium. Various things favor these deposits. These include smoking, high blood pressure, and other disorders.
When someone has a heart attack, the coronary arteries have become far too narrow or they have closed up completely. As a result, the heart does not get enough oxygen. As a result, the heart muscle gets damaged or dies off.
The heart consists of various layers. The heart consists mainly of muscle tissue. There is a layer of connective tissue on the outside of the heart. There is a thin membrane inside the heart. The coronary arteries are on the outside of the heart and they then run, via small blood vessels, into the muscle layer. In your case, the part of your heart muscle that is damaged is inside your heart, beneath the thin membrane.
When someone has a heart attack, they get sudden pains in the chest or arm. They may sweat or feel nauseous. The heart may no longer be working properly. One can then have breathing difficulties and be seriously ill.
On medical documents, the ICD code is often appended by letters that indicate the diagnostic certainty or the affected side of the body.
- G: Confirmed diagnosis
- V: Tentative diagnosis
- Z: Condition after
- A: Excluded diagnosis
- L: Left
- R: Right
- B: Both sides
Provided by the non-profit organization “Was hab’ ich?” gemeinnützige GmbH on behalf of the Federal Ministry of Health (BMG).