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B00 ICD-10-CA category: Herpesviral [herpes simplex] infections

B00 isn’t a code on its own. Choose one of the 9 codes beneath it, the one the documentation supports.

Official description

B00

Herpesviral [herpes simplex] infections

ICD-10-CA · Canada

Codes in B00

B00 isn’t a code on its own. Open the code that matches what the note documents.

B00.0Eczema herpeticumB00.1Herpesviral vesicular dermatitisB00.2Herpesviral gingivostomatitis and pharyngotonsillitisB00.3Herpesviral meningitisB00.4Herpesviral encephalitisB00.5Herpesviral ocular diseaseB00.7Disseminated herpesviral diseaseB00.8Other forms of herpesviral infectionB00.9Herpesviral infection, unspecified

Notes for B00

As CIHI prints them, with any note B00 takes from the headings above it.

Includes

  • 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.

  • Anogenital herpesviral infection (A60.-)congenital herpesviral infection (P35.2)gammaherpesviral mononucleosis (B27.0)herpangina (B08.5)
  • 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 B00 sits

  1. 1ChapterChapter 1: Certain infectious and parasitic diseases (A00-B99)
  2. 2Block B00-B09Viral infections characterized by skin and mucous membrane lesions
  3. 3Category B00Herpesviral [herpes simplex] infections

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.

See B00 in the CIHI source

Frequently asked questions

Is B00 a valid ICD-10-CA code?

No. B00 (Herpesviral [herpes simplex] infections) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 9 codes; record the one the documentation supports.

Where is B00 in ICD-10-CA?

B00 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 B00?

ICD-10-CA lists Excludes, Includes, Use additional code notes for B00, 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.

Codes beside B00

B01Varicella [chickenpox]B02Zoster [herpes zoster]B03SmallpoxB04Mpox [monkeypox]B05MeaslesB06Rubella [German measles]B07Viral wartsB08Other viral infections characterized by skin and mucous membrane lesions, not elsewhere classifiedB09Unspecified viral infection characterized by skin and mucous membrane lesions