B08.20
✓ BillableExanthema subitum [sixth disease], unspecified
Certain infectious and parasitic diseases (A00-B99)
Also Known As
❌ Excludes1
inheritedRules inherited from parent codes in the hierarchy.
- • vesicular stomatitis virus disease (A93.8)
Clinical Description
ICD-10-CM code B08.20 represents exanthema subitum [sixth disease], unspecified. This code falls under the Certain infectious and parasitic diseases (A00-B99) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 6-character code at the 5th level of specificity. This is the most specific code available in this subcategory. Coders should note that B08.20 has 1 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.
Frequently Asked Questions
What is ICD-10 code B08.20?
ICD-10-CM code B08.20 is "Exanthema subitum [sixth disease], unspecified". It belongs to the category: Certain infectious and parasitic diseases (A00-B99).
Is B08.20 a billable ICD-10 code?
Yes, B08.20 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
What codes are excluded with B08.20?
B08.20 has 1 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.
Related Codes in B08.2
Other codes in the same category that may be relevant for differential coding:
🧪 Validate Combinations
Add B08.20 to the Excludes Checker to validate against your full code list.
Open in Checker →Code Information
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)