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2. ICD-10 Codes
3. Chapter - A00-B99
4. Section - B25-B34
5. Category - B33
6. B33.21

B33.21 - Viral endocarditis

• Applicable to Viral endocarditis
• The 2025 edition of ICD10-CM B33.21 became effective on October 1, 2024.
• This is the American ICD10-CM version of B33.21 - other international versions of ICD10 B33.21 may differ.
• B33.21 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

The following codes above B33.21 contain annotation back-references that may be applicable to B33.21:

• Chapter: A00-B99 - Certain infectious and parasitic diseases
• Section: B25-B34 - Other viral diseases
• Category: B33 - Other viral diseases, not elsewhere classified

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.