ICD-10 Diagnosis Code I51

Complications and ill-defined descriptions of heart disease

Diagnosis Code I51

ICD-10: I51
Short Description: Complications and ill-defined descriptions of heart disease
Long Description: Complications and ill-defined descriptions of heart disease
This is the 2017 version of the ICD-10-CM diagnosis code I51

Not Valid for Submission
The code I51 is a "header" and not valid for submission for HIPAA-covered transactions.

Code Classification
  • Diseases of the circulatory system (I00–I99)
    • Other forms of heart disease (I30-I52)
      • Complications and ill-defined descriptions of heart disease (I51)

Information for Medical Professionals

Index of Diseases and Injuries
References found for the code I51 in the Index of Diseases and Injuries:


Information for Patients


Heart Diseases

Also called: Cardiac diseases

If you're like most people, you think that heart disease is a problem for others. But heart disease is the number one killer in the U.S. It is also a major cause of disability. There are many different forms of heart disease. The most common cause of heart disease is narrowing or blockage of the coronary arteries, the blood vessels that supply blood to the heart itself. This is called coronary artery disease and happens slowly over time. It's the major reason people have heart attacks.

Other kinds of heart problems may happen to the valves in the heart, or the heart may not pump well and cause heart failure. Some people are born with heart disease.

You can help reduce your risk of heart disease by taking steps to control factors that put you at greater risk:

  • Control your blood pressure
  • Lower your cholesterol
  • Don't smoke
  • Get enough exercise

NIH: National Heart, Lung, and Blood Institute

  • Aspirin and heart disease
  • Being active when you have heart disease
  • Cardiac catheterization
  • Electrocardiogram
  • Exercise stress test
  • Heart disease - risk factors
  • Heart disease and depression
  • Understanding cardiovascular disease
  • Warning signs and symptoms of heart disease


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