2025 ICD-10-CM Diagnosis Code I42.2

Other hypertrophic cardiomyopathy

  • I42.2 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2025 edition of ICD-10-CM I42.2 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of I42.2 – other international versions of ICD-10 I42.2 may differ.

Applicable To

  • Nonobstructive hypertrophic cardiomyopathy

The following code(s) above I42.2 contain annotation back-references

 that may be applicable to I42.2:

  • I00-I99  Diseases of the circulatory system
  • I42  Cardiomyopathy

Approximate Synonyms

  • Cardiomyopathy, primary familial hypertrophic
  • Familial hypertrophic cardiomyopathy
  • Hypertrophic cardiomyopathy without obstruction
  • Hypertrophic cardiomyopathy, nonobstructive
  • Hypertrophic nonobstructive cardiomyopathy
  • Primary familial hypertrophic cardiomyopathy

ICD-10-CM I42.2 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

  • 314 Other circulatory system diagnoses with mcc
  • 315 Other circulatory system diagnoses with cc
  • 316 Other circulatory system diagnoses without cc/mcc

Convert I42.2 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change
  • 2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to I42.2:

  • Cardiomyopathy (familial) (idiopathic) I42.9
    • hypertrophic (nonobstructive) I42.2
  • Hypertrophy, hypertrophic
    • myocardium – see also Hypertrophy, cardiac
      • idiopathic I42.2
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