2025 ICD-10-CM Diagnosis Code I01.1

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Acute rheumatic endocarditis

  • I01.1 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 I01.1 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of I01.1 – other international versions of ICD-10 I01.1 may differ.

Applicable To

  • Any condition in I00 with endocarditis or valvulitis
  • Acute rheumatic valvulitis

The following code(s) above I01.1 contain annotation back-references

 that may be applicable to I01.1:

  • I00-I99  Diseases of the circulatory system
  • I01  Rheumatic fever with heart involvement

Approximate Synonyms

  • Acute rheumatic endocarditis (infected heart valve)

ICD-10-CM I01.1 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

  • 306 Cardiac congenital and valvular disorders with mcc
  • 307 Cardiac congenital and valvular disorders without mcc

Convert I01.1 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

Code annotations containing back-references to I01.1:

  • Type 1 Excludes: I33

Diagnosis Index entries containing back-references to I01.1:

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