B33.4 ICD-10-CA code: Hantavirus (cardio)pulmonary syndrome [HPS] [HCPS]
B33.4 is the ICD-10-CA code for “Hantavirus (cardio)pulmonary syndrome [HPS] [HCPS]” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
B33.4Hantavirus (cardio)pulmonary syndrome [HPS] [HCPS]
Short description: Hantavirus (cardio)pulm synd [HPS][HCPS]
ICD-10-CA · Canada · Also written B334
Notes for B33.4
As CIHI prints them, with any note B33.4 takes from the headings above it.
Includes
- Hantavirus disease with pulmonary manifestionsSin Nombre virus disease
- 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 (N17.9) to identify any renal failure associated with HPS caused by the Andes, Bayou and Black Creek Canal hantavirus etiologies.
- Use additional code (U82-U84) to identify resistance to antimicrobial drugsFrom Chapter 1: Certain infectious and parasitic diseases (A00-B99)
Excludes
Conditions classified elsewhere.
- Haemorrhagic fever with renal manifestations (A98.5†, N08.0*)
- 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 B33.4 sits
- 1ChapterChapter 1: Certain infectious and parasitic diseases (A00-B99)
- 2Block B25-B34Other viral diseases
- 3Category B33Other viral diseases, not elsewhere classified
- 4Valid code B33.4Hantavirus (cardio)pulmonary syndrome [HPS] [HCPS]
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 B33.4 mean?
B33.4 is the ICD-10-CA code for “Hantavirus (cardio)pulmonary syndrome [HPS] [HCPS]” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is B33.4 in ICD-10-CA?
B33.4 sits under B33 Other viral diseases, not elsewhere classified, within B25-B34 Other viral diseases, within Chapter 1: Certain infectious and parasitic diseases (A00-B99).
What coding notes apply to B33.4?
ICD-10-CA lists Includes, Use additional code, Excludes notes for B33.4, 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.