B09 ICD-10-CA code: Unspecified viral infection characterized by skin and mucous membrane lesions
B09 is the ICD-10-CA code for “Unspecified viral infection characterized by skin and mucous membrane lesions” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
B09Unspecified viral infection characterized by skin and mucous membrane lesions
Short description: Viral infectn NOS w skin & mucous lsn
ICD-10-CA · Canada
Index terms
Entries in CIHI’s alphabetical index that lead to B09. Searching the index by the condition the note names is how coders reach this code.
- Roseola
- Enanthema, viral
- Exanthem, exanthema, viral, virus
Notes for B09
As CIHI prints them, with any note B09 takes from the headings above it.
Includes
- Viral:• enanthema NOS• exanthema NOS
- Diseases generally recognized as communicable or transmissibleFrom Chapter 1: Certain infectious and parasitic diseases (A00-B99)
Use additional code
Add a code for this detail when the note documents it.
- Use additional code (U82-U84) to identify resistance to antimicrobial drugsFrom Chapter 1: Certain infectious and parasitic diseases (A00-B99)
Excludes
Conditions classified elsewhere.
- Carrier or suspected carrier of infectious disease (Z22.-)certain localized infections - see body system-related chaptersinfectious and parasitic diseases:• complicating pregnancy, childbirth and the puerperium [except obstetrical tetanus] (O98.-)• specific to the perinatal period [except tetanus neonatorum, whooping cough, congenital syphilis, perinatal gonococcal infection and perinatal human immunodeficiency virus [HIV] disease] (P35-P39)influenza and other acute respiratory infections (J00-J22)From Chapter 1: Certain infectious and parasitic diseases (A00-B99)
Where B09 sits
- 1ChapterChapter 1: Certain infectious and parasitic diseases (A00-B99)
- 2Block B00-B09Viral infections characterized by skin and mucous membrane lesions
- 3Valid code B09Unspecified viral infection characterized by skin and mucous membrane lesions
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code B09 mean?
B09 is the ICD-10-CA code for “Unspecified viral infection characterized by skin and mucous membrane lesions” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is B09 in ICD-10-CA?
B09 sits under B00-B09 Viral infections characterized by skin and mucous membrane lesions, within Chapter 1: Certain infectious and parasitic diseases (A00-B99).
What coding notes apply to B09?
ICD-10-CA lists Includes, Use additional code, Excludes notes for B09, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.