I30

ICD-10Non-billable category

Acute pericarditis

Official ICD-10-CM descriptor (FY2026)

Acute pericarditis

I30 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

Includes

  • acute mediastinopericarditis
  • acute myopericarditis
  • acute pericardial effusion
  • acute pleuropericarditis
  • acute pneumopericarditis

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

  • Dressler's syndrome (I24.1)
  • rheumatic pericarditis (acute) (I01.0)
  • viral pericarditis due to Coxsackie virus (B33.23)

More specific codes under I30

Where this code sits

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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