B94.1 ICD-10-CA code: Sequelae of viral encephalitis
B94.1 is the ICD-10-CA code for “Sequelae of viral encephalitis” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
B94.1Sequelae of viral encephalitis
ICD-10-CA · Canada · Also written B941
Index terms
Entries in CIHI’s alphabetical index that lead to B94.1. Searching the index by the condition the note names is how coders reach this code.
- Sequelae (of), viral, encephalitis
Notes for B94.1
As CIHI prints them, with any note B94.1 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.
- 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)
Note
- Categories B90-B94 are to be used to indicate conditions in categories A00-B89 as the cause of sequelae, which are themselves classified elsewhere. The "sequelae" include conditions specified as such; they also include late effects of diseases classifiable to the above categories if there is evidence that the disease itself is no longer present. For use of these categories, reference should be made to the morbidity or mortality coding rules and guidelines.Not to be used for chronic infections. Code current infections to chronic or active infectious disease as appropriate.From B90-B94 Sequelae of infectious and parasitic diseases
Where B94.1 sits
- 1ChapterChapter 1: Certain infectious and parasitic diseases (A00-B99)
- 2Block B90-B94Sequelae of infectious and parasitic diseases
- 3Category B94Sequelae of other and unspecified infectious and parasitic diseases
- 4Valid code B94.1Sequelae of viral encephalitis
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 B94.1 mean?
B94.1 is the ICD-10-CA code for “Sequelae of viral encephalitis” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is B94.1 in ICD-10-CA?
B94.1 sits under B94 Sequelae of other and unspecified infectious and parasitic diseases, within B90-B94 Sequelae of infectious and parasitic diseases, within Chapter 1: Certain infectious and parasitic diseases (A00-B99).
What coding notes apply to B94.1?
ICD-10-CA lists Note, Includes, Use additional code, Excludes notes for B94.1, 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.