I30.9 – Acute pericarditis, unspecified

ICD-10-CM 2027 diagnosis code · Other forms of heart disease

Billable code

ICD-10-CM code I30.9

Code: I30.9 (claims format: I309)
Description: Acute pericarditis, unspecified
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: I30-I5A Other forms of heart disease
Parent codes: I30

Notes inherited from parent codes

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

I30 – Acute pericarditis

Includes:

acute mediastinopericarditis
acute myopericarditis
acute pericardial effusion
acute pleuropericarditis
acute pneumopericarditis

Excludes1 (not coded here):

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

Index terms for I30.9

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

Related codes in I30

I30.0 – Acute nonspecific idiopathic pericarditisBillable
I30.1 – Infective pericarditisBillable
I30.8 – Other forms of acute pericarditisBillable

Frequently asked questions

What is ICD-10 code I30.9?

I30.9 is the ICD-10-CM code for acute pericarditis, unspecified, in the block I30-I5A (Other forms of heart disease).

Is I30.9 a billable code?

Yes. I30.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does I30.9 belong to?

It belongs to category I30 – Acute pericarditis.

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.