B09 ICD-10-CM Code: Unspecified viral infection characterized by skin and mucous membrane lesions
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
B09Unspecified viral infection characterized by skin and mucous membrane lesions
ICD-10-CM diagnosis code · United States clinical modification
Where B09 sits
- 1
Chapter 1
Certain infectious and parasitic diseases (A00-B99)
- 2
Section
Viral infections characterized by skin and mucous membrane lesions (B00-B09)
- 3
Category B09
Unspecified viral infection characterized by skin and mucous membrane lesions
- 4
Code B09
Unspecified viral infection characterized by skin and mucous membrane lesions
Notes for this code
Inclusion terms
- Viral enanthema NOS
- Viral exanthema NOS
Code first
No “code first” instruction is listed for B09.
Use additional code
No “use additional code” instruction is listed for B09.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for B09.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for B09.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code B09 mean?
B09 is the FY 2027 U.S. ICD-10-CM code for “Unspecified viral infection characterized by skin and mucous membrane lesions.”
Is B09 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, B09 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is B09 located in ICD-10-CM?
B09 is listed in Chapter 1, Certain infectious and parasitic diseases (A00-B99), within Viral infections characterized by skin and mucous membrane lesions (B00-B09) (B00–B09), under category B09, Unspecified viral infection characterized by skin and mucous membrane lesions.
What coding notes are listed for B09?
Its listed inclusion terms are Viral enanthema NOS; Viral exanthema NOS. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.