I01.0 – Acute rheumatic pericarditis

ICD-10-CM 2027 diagnosis code · Acute rheumatic fever

Billable code

ICD-10-CM code I01.0

Code: I01.0 (claims format: I010)
Description: Acute rheumatic pericarditis
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 9. Diseases of the circulatory system (I00-I99)
Block: I00-I02 Acute rheumatic fever
Parent codes: I01

Notes for I01.0

Applicable to:

Any condition in I00 with pericarditis
Rheumatic pericarditis (acute)

Excludes1 (not coded here):

acute pericarditis not specified as rheumatic (I30.-)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

I01 – Rheumatic fever with heart involvement

Excludes1 (not coded here):

chronic diseases of rheumatic origin (I05-I09) unless rheumatic fever is also present or there is evidence of reactivation or activity of the rheumatic process.

Index terms for I01.0

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in I01

I01.1 – Acute rheumatic endocarditisBillable
I01.2 – Acute rheumatic myocarditisBillable
I01.8 – Other acute rheumatic heart diseaseBillable
I01.9 – Acute rheumatic heart disease, unspecifiedBillable

Frequently asked questions

What is ICD-10 code I01.0?

I01.0 is the ICD-10-CM code for acute rheumatic pericarditis, in the block I00-I02 (Acute rheumatic fever).

Is I01.0 a billable code?

Yes. I01.0 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does I01.0 belong to?

It belongs to category I01 – Rheumatic fever with heart involvement.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.