ICD-9 Diagnosis Code 412

Old myocardial infarct

Diagnosis Code 412

ICD-9: 412
Short Description: Old myocardial infarct
Long Description: Old myocardial infarction
This is the 2014 version of the ICD-9-CM diagnosis code 412

Code Classification
  • Diseases of the circulatory system
    • Ischemic heart disease (410-414)
      • 412 Old myocardial infarction

Information for Medical Professionals

Convert to ICD-10 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.
  • I25.2 - Old myocardial infarction

Index of Diseases and Injuries
References found for the code 412 in the Index of Diseases and Injuries:

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

  • Acute coronary syndrome
  • Being active after your heart attack
  • Cardiac catheterization
  • Cardiac catheterization - discharge
  • Cardiogenic shock
  • Coronary angiography
  • Electrocardiogram
  • Heart attack
  • Heart attack - discharge
  • Heart disease and intimacy
  • 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)
  • Thrombolytic drugs for heart attack
  • Thrombolytic therapy
  • Troponin test

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