2025 ICD-10-CM Diagnosis Code I42.7

Cardiomyopathy due to drug and external agent

  • I42.7 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 I42.7 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of I42.7 – other international versions of ICD-10 I42.7 may differ.

Use Additional

  • code for adverse effect, if applicable, to identify drug (T36-T50  with fifth or sixth character 5)

Code First

  • poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4)

The following code(s) above I42.7 contain annotation back-references

 that may be applicable to I42.7:

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

Approximate Synonyms

  • Cardiomyopathy due to drug
  • Dilated cardiomyopathy due to drug
  • Dilated cardiomyopathy secondary to drug
  • Dilated cardiomyopathy secondary to toxic reaction
  • Drug induced cardiomyopathy
  • Toxic cardiomyopathy

ICD-10-CM I42.7 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 I42.7 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 I42.7:

  • Cardiomyopathy (familial) (idiopathic) I42.9
    • due to
      • drugs I42.7
      • external agents NEC I42.7
    • toxic NEC I42.7
  • Myocardiopathy (congestive) (constrictive) (familial) (hypertrophic nonobstructive) (idiopathic) (infiltrative) (obstructive) (primary) (restrictive) (sporadic) I42.9 – see also Cardiomyopathy
    • toxic NEC I42.7
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