Specific code icon 2014 ICD-10-CM Diagnosis Code I51.7

Cardiomegaly

  • I51.7 is a billable ICD-10-CM code that can be used to specify a diagnosis.
  • On October 1, 2015 ICD-10-CM will replace ICD-9-CM in the United States, therefore, I51.7 and all other ICD-10-CM codes should only be used for training or planning purposes until then.
Clinical Information
  • Abnormal enlargement of the heart.
  • Enlargement of the heart due to chamber hypertrophy, an increase in wall thickness without an increase in the number of cells (myocytes, cardiac). It is the result of increase in myocyte size, mitochondrial and myofibrillar mass, as well as changes in extracellular matrix.
  • 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.
  • Hypertrophy or enlargement of the heart.
Applicable To
  • Cardiac dilatation
  • Cardiac hypertrophy
  • Ventricular dilatation
Description Synonyms
  • Atrial enlargement
  • Atrial enlargement, bilateral
  • Atrial enlargement, left
  • Atrial enlargement, right
  • Bilateral enlargement of atria
  • Cardiomegaly (enlarged heart)
  • Hypertrophy or dilatation of right ventricle
  • Left atrial enlargement
  • Left ventricular dilatation
  • Left ventricular hypertrophy
  • Right atrial enlargement
  • Ventricular enlargement, right
Mortality Data
  • Between 1999-2007 there were 13,602 deaths in the United States where ICD-10 I51.7 was indicated as the underlying cause of death [source: cdc.govlink to cdc.gov]
  • ICD-10 I51.7 as underlying cause of death data broken down by: gender, age, race, year
ICD-10-CM I51.7 is grouped within Diagnostic Related Group(s) (MS-DRG v30.0):
  • 302 Atherosclerosis with mcc
  • 303 Atherosclerosis without mcc
Convert ICD-10-CM I51.7 to ICD-9-CM
The following ICD-10-CM Index entries contain back-references to ICD-10-CM I51.7: