B33.23 – Viral pericarditis
ICD-10-CM 2027 diagnosis code · Other viral diseases
ICD-10-CM code
B33.23
- Code
B33.23(claims format:B3323)- Description
- Viral pericarditis
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 1. Certain infectious and parasitic diseases (A00-B99)
- Block
- B25-B34 Other viral diseases
- Parent codes
- B33 › B33.2
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
B33.2 – Viral carditis
Applicable to:
- Coxsackie (virus) carditis
Index terms for B33.23
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in B33.2
- B33.20 – Viral carditis, unspecifiedBillable
- B33.21 – Viral endocarditisBillable
- B33.22 – Viral myocarditisBillable
- B33.24 – Viral cardiomyopathyBillable
Frequently asked questions
What is ICD-10 code B33.23?
B33.23 is the ICD-10-CM code for viral pericarditis, in the block B25-B34 (Other viral diseases).
Is B33.23 a billable code?
Yes. B33.23 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does B33.23 belong to?
It belongs to category B33 – Other viral diseases, not elsewhere classified.
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.