ICD-10-CM B33.2 is the diagnosis code for Viral carditis. This code falls under the section "Other viral diseases" within Chapter 1 — Certain infectious and parasitic diseases (A00-B99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Understanding where B33.2 sits in the ICD-10-CM classification helps ensure proper coding:
No, B33.2 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
B33.2 is the ICD-10-CM diagnosis code for "Viral carditis". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of B33.2 is B33 ("Other viral diseases, not elsewhere classified"). B33.2 provides a more specific classification within this category.
B33.2 is located in Section B25-B34 — "Other viral diseases" within Chapter 1 of the ICD-10-CM Tabular List.
B33.2 has 5 sub-code(s) that provide more specific detail: B33.20, B33.21, B33.22, B33.23, B33.24.
Use B33.2 when the patients documented diagnosis matches "Viral carditis" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Viral carditis is B33.2.
No, B33.2 is non-billable. Use a more specific sub-code for primary diagnosis billing.
B33.2 is in Chapter 1 of the ICD-10-CM Tabular List.
Yes, B33.2 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.