ICD-10-CM Code I51.7


Version 2021 Billable Code

Valid for Submission

I51.7 is a billable code used to specify a medical diagnosis of cardiomegaly. The code is valid for the fiscal year 2021 for the submission of HIPAA-covered transactions. The ICD-10-CM code I51.7 might also be used to specify conditions or terms like apex beat displaced, apex beat displaced, apex beat displaced, apex beat displaced, apex beat displaced - lvh, apex beat displaced - lvh, etc

Short Description:Cardiomegaly
Long Description:Cardiomegaly

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code I51.7:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Cardiac dilatation
  • Cardiac hypertrophy
  • Ventricular dilatation

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code I51.7 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Apex beat displaced
  • Apex beat displaced
  • Apex beat displaced
  • Apex beat displaced
  • Apex beat displaced - LVH
  • Apex beat displaced - LVH
  • Apex beat displaced - RVH
  • Apex beat displaced - RVH
  • Athlete's heart
  • Atrial dilatation
  • Atrial hypertrophy
  • Atrial hypertrophy by EKG
  • Atrial hypertrophy by EKG
  • Atrial hypertrophy by EKG
  • Auricular dilatation
  • Bilateral enlargement of atria
  • Cardiac dilatation
  • Cardiac ventricular dilatation
  • Cardiomegaly
  • Congenital dilatation of atrium
  • Cor bovinum
  • EKG hypertrophy
  • EKG hypertrophy
  • EKG hypertrophy
  • EKG hypertrophy
  • EKG: right ventricle hypertrophy
  • Familial idiopathic dilatation of right atrium
  • Giant left atrium
  • Hypertrophic cardiomegaly
  • Left atrial dilatation
  • Left atrial enlargement
  • Left atrial hypertrophy
  • Left atrial hypertrophy by EKG
  • Left cardiac ventricular dilatation
  • Left ventricular hypertrophy
  • Left ventricular hypertrophy by electrocardiogram
  • Markedly enlarged cardiac chamber
  • Mildly enlarged cardiac chamber
  • Moderately enlarged cardiac chamber
  • O/E - apex beat displaced -LVH
  • O/E - apex beat displaced -RVH
  • Obstruction of pulmonary great vein due to compression by right atrial dilatation
  • Position of apex beat - finding
  • Position of apex beat - finding
  • Position of apex beat - finding
  • Position of apex beat - finding
  • Right atrial dilatation
  • Right atrial enlargement
  • Right atrial hypertrophy
  • Right atrial hypertrophy by electrocardiogram
  • Right cardiac ventricular dilatation
  • Right ventricular hypertrophy
  • Transient ischemic dilatation of left cardiac ventricular cavity
  • Ventricular hypertrophy
  • Ventricular hypertrophy by EKG

Clinical Information

  • CARDIOMEGALY-. enlargement of the heart usually indicated by a cardiothoracic ratio above 0.50. heart enlargement may involve the right the left or both heart ventricles or heart atria. cardiomegaly is a nonspecific symptom seen in patients with chronic systolic heart failure heart failure or several forms of cardiomyopathies.
  • CARDIOMEGALY EXERCISE INDUCED-. heart enlargement and other remodeling in cardiac morphology and electrical circutry found in individuals who participate in intense repeated exercises.

Diagnostic Related Groups

The ICD-10 code I51.7 is grouped in the following groups for version MS-DRG V38.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2020 through 09/30/2021.


Convert I51.7 to ICD-9

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)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

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

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