I01.0

ICD-10Billable

Acute rheumatic pericarditis

Official ICD-10-CM descriptor (FY2026)

Acute rheumatic pericarditis

I01.0 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

  • Any condition in I00 with pericarditis
  • Rheumatic pericarditis (acute)

Excludes1

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

  • acute pericarditis not specified as rheumatic (I30.-)

Related codes in I01

Where this code sits

Parent code
I01

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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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