Specific code 2014 ICD-9-CM Diagnosis Code 429.3
  • Billable Code
  • ICD-9-CM 429.3 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 429.3 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Disease 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
Clinical Information
  • Abnormal enlargement of the heart.
  • 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.
429.3 Excludes
Applies To
  • Cardiac:
    • dilatation
    • hypertrophy
  • Ventricular dilatation
Convert to ICD-10-CM: 429.3 converts directly to:
  • 2014 ICD-10-CM I51.7 Cardiomegaly
ICD-9-CM Volume 2 Index entries containing back-references to 429.3:
  • Athlete's
    • heart 429.3
  • Cardiomegaly (see also Hypertrophy, cardiac) 429.3
    • hypertensive (see also Hypertension, heart) 402.90
  • Dilatation
    • cardiac (acute) (chronic) (see also Hypertrophy, cardiac) 429.3
    • heart (acute) (chronic) (see also Hypertrophy, cardiac) 429.3
      • congenital 746.89
      • hypertensive (see also Hypertension, heart) 402.90
      • valve - see also Endocarditis
    • myocardium (acute) (chronic) (see also Hypertrophy, cardiac) 429.3
    • ventricular, ventricle (acute) (chronic) (see also Hypertrophy, cardiac) 429.3
      • cerebral, congenital 742.4
      • hypertensive (see also Hypertension, heart) 402.90
  • Enlargement, enlarged - see also Hypertrophy
    • heart, cardiac (see also Hypertrophy, cardiac) 429.3
  • Hypertrophy, hypertrophic
    • cardiac (chronic) (idiopathic) 429.3
      • with
        • rheumatic fever (conditions classifiable to 390)
      • congenital NEC 746.89
      • fatty (see also Degeneration, myocardial) 429.1
      • hypertensive (see also Hypertension, heart) 402.90
      • rheumatic (with chorea) 398.99
      • valve (see also Endocarditis) 424.90
    • myocardium (see also Hypertrophy, cardiac) 429.3
  • Preponderance, left or right ventricular 429.3
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 429.3 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2014 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.