I01.9

ICD-10Billable

Acute rheumatic heart disease, unspecified

Official ICD-10-CM descriptor (FY2026)

Acute rheumatic heart disease, unspecified

I01.9 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

Any condition in I00 with unspecified type of heart involvement
Rheumatic carditis, acute
Rheumatic heart disease, active or acute

Related codes in I01

Where this code sits

Chapter: 9. Diseases of the circulatory system (I00-I99)
Block: Acute rheumatic fever (I00-I02)
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.