2025 ICD-10-CM Diagnosis Code I32

Pericarditis in diseases classified elsewhere

  • I32 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 I32 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of I32 – other international versions of ICD-10 I32 may differ.

ICD-10-CM Coding Rules

  • I32 describes the manifestation of an underlying disease, not the disease itself.

Code First

  • underlying disease

Type 1 Excludes

  • pericarditis (in):
  • coxsackie (virus) (B33.23)
  • gonococcal (A54.83)
  • meningococcal (A39.53)
  • rheumatoid (arthritis) (M05.31)
  • syphilitic (A52.06)
  • systemic lupus erythematosus (M32.12)
  • tuberculosis (A18.84)

The following code(s) above I32 contain annotation back-references

 that may be applicable to I32:

  • I00-I99  Diseases of the circulatory system

Approximate Synonyms

  • Histoplasmosis pericarditis
  • Histoplasmosis with pericarditis

ICD-10-CM I32 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
  • 791 Prematurity with major problems
  • 793 Full term neonate with major problems

Convert I32 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 I32:

  • Use Additional: B39
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