Specific code 2015 ICD-9-CM Diagnosis Code 425.11
Hypertrophic obstructive cardiomyopathy
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 425.11 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 425.11 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Convert to ICD-10-CM: 425.11 converts directly to:
  • 2015/16 ICD-10-CM I42.1 Obstructive hypertrophic cardiomyopathy
Approximate Synonyms
  • Cardiomyopathy, hypertrophic obstructive
  • Cardiomyopathy, hypertrophic, obstructive
  • Idiopathic hypertrophic subaortic stenosis
Clinical Information
  • A condition in which the myocardium is hypertrophied without an obvious cause. The hypertrophy is generally asymmetric and may be associated with obstruction of the ventricular outflow tract
  • A form of cardiac muscle disease, characterized by left and/or right ventricular hypertrophy (hypertrophy, left ventricular; hypertrophy, right ventricular), frequent asymmetrical involvement of the heart septum, and normal or reduced left ventricular volume. Risk factors include hypertension; aortic stenosis; and gene mutation; (familial hypertrophic cardiomyopathy)
  • Myocardial disease characterized by hypertrophy, involving mainly the interventricular septum, interfering with left ventricular emptying
Applies To
  • Hypertrophic subaortic stenosis (idiopathic)
ICD-9-CM Volume 2 Index entries containing back-references to 425.11:
  • Cardiomyopathy (congestive) (constrictive) (familial) (infiltrative) (obstructive) (restrictive) (sporadic) 425.4
  • Hypertrophy, hypertrophic
    • subaortic stenosis (idiopathic) 425.11
  • Myocardiopathy (congestive) (constrictive) (familial) (idiopathic) (infiltrative) (obstructive) (primary) (restrictive) (sporadic) 425.4
  • Stenosis (cicatricial) - see also Stricture
    • hypertrophic subaortic (idiopathic) 425.11
    • myocardium, myocardial (see also Degeneration, myocardial) 429.1
      • hypertrophic subaortic (idiopathic) 425.11
    • subaortic 746.81
      • hypertrophic (idiopathic) 425.11
  • Stricture (see also Stenosis) 799.89
    • myocardium, myocardial (see also Degeneration, myocardial 429.1
      • hypertrophic subaortic (idiopathic) 425.11
    • subaortic 746.81
      • hypertrophic (acquired) (idiopathic) 425.11
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 425.11 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 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.