Home > 2011 ICD-9-CM Diagnosis Codes > Diseases Of The Circulatory System 390-459 > Other Forms Of Heart Disease 420-429 > Cardiomyopathy 425-
Specific code 2011 ICD-9-CM Diagnosis Code 425.1
Hypertrophic obstructive cardiomyopathy
  • Short description: Hypertr obstr cardiomyop.
  • ICD-9-CM 425.1 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 425.1 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).
  • You are viewing the 2011 version of ICD-9-CM 425.1.
  • More recent version(s) of ICD-9-CM 425.1: 2012 2013 2014 2015.
  • No ICD-10-CM code(s) convert to ICD-9-CM 425.1
Approximate Synonyms
  • Cardiomyopathy, hypertrophic obstructive
Applies To
  • Hypertrophic subaortic stenosis (idiopathic)
ICD-9-CM Volume 2 Index entries containing back-references to 425.1:
  • Cardiomyopathy (congestive) (constrictive) (familial) (infiltrative) (obstructive) (restrictive) (sporadic) 425.4
    • hypertrophic
  • Hypertrophy, hypertrophic
    • subaortic stenosis (idiopathic) 425.1
  • Myocardiopathy (congestive) (constrictive) (familial) (hypertrophic nonobstructive) (idiopathic) (infiltrative) (obstructive) (primary) (restrictive) (sporadic) 425.4
    • hypertrophic obstructive 425.1
  • Stenosis (cicatricial) - see also Stricture
    • hypertrophic subaortic (idiopathic) 425.1
    • myocardium, myocardial (see also Degeneration, myocardial) 429.1
      • hypertrophic subaortic (idiopathic) 425.1
    • subaortic 746.81
      • hypertrophic (idiopathic) 425.1
  • Stricture (see also Stenosis) 799.89
    • myocardium, myocardial (see also Degeneration, myocardial 429.1
      • hypertrophic subaortic (idiopathic) 425.1
    • subaortic 746.81
      • hypertrophic (acquired) (idiopathic) 425.1
 425.0 ICD9Data.com 425.2 
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 425.1 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 2011 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
Free ICD-9-CM Codes
Site Information
Free ICD-10-CM/PCS Codes
Free HCPCS Codes