ICD-10 Diagnosis Code I21.1

ST elevation (STEMI) myocardial infarction of inferior wall

Diagnosis Code I21.1

ICD-10: I21.1
Short Description: ST elevation (STEMI) myocardial infarction of inferior wall
Long Description: ST elevation (STEMI) myocardial infarction of inferior wall
This is the 2017 version of the ICD-10-CM diagnosis code I21.1

Code Classification
  • Diseases of the circulatory system
    • Ischemic heart diseases (I20-I25)
      • STEMI & NSTEMI mocard infrc (I21)

Information for Patients

Heart Attack

Also called: MI, Myocardial infarction

Each year over a million people in the U.S. have a heart attack. About half of them die. Many people have permanent heart damage or die because they don't get help immediately. It's important to know the symptoms of a heart attack and call 9-1-1 if someone is having them. Those symptoms include

  • Chest discomfort - pressure, squeezing, or pain
  • Shortness of breath
  • Discomfort in the upper body - arms, shoulder, neck, back
  • Nausea, vomiting, dizziness, lightheadedness, sweating

These symptoms can sometimes be different in women.

What exactly is a heart attack? Most heart attacks happen when a clot in the coronary artery blocks the supply of blood and oxygen to the heart. Often this leads to an irregular heartbeat - called an arrhythmia - that causes a severe decrease in the pumping function of the heart. A blockage that is not treated within a few hours causes the affected heart muscle to die.

NIH: National Heart, Lung, and Blood Institute

  • Being active after your heart attack
  • Cardiac catheterization
  • Cardiac catheterization - discharge
  • Heart attack
  • Heart attack - discharge
  • Learn What a Heart Attack Feels Like--It Could Save Your Life - NIH - Easy-to-Read (National Heart, Lung, and Blood Institute)
  • Talk With Your Health Care Provider About Taking Aspirin to Prevent Heart Attack (Agency for Healthcare Research and Quality)
  • Troponin test

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