U04.91 ICD-10-CA code: Probable severe acute respiratory syndrome [SARS]
U04.91 is the ICD-10-CA code for “Probable severe acute respiratory syndrome [SARS]” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
U04.91Probable severe acute respiratory syndrome [SARS]
Short description: Probable SARS
ICD-10-CA · Canada · Also written U0491
Index terms
Entries in CIHI’s alphabetical index that lead to U04.91. Searching the index by the condition the note names is how coders reach this code.
- Syndrome, severe, acute respiratory (SARS), probable SARS
- Syndrome, respiratory, severe acute respiratory (SARS), probable SARS
Notes for U04.91
As CIHI prints them, with any note U04.91 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- COVID-19, virus identified (U07.1)COVID-19, virus not identified (U07.2)From U04 Severe acute respiratory syndrome [SARS]
Where U04.91 sits
- 1ChapterChapter 23: Provisional Codes for Research and Temporary Assignment
- 2Block U00-U49Provisional codes for temporary assignment by World Health Organization of new diseases of uncertain etiology or emergency use
- 3Category U04Severe acute respiratory syndrome [SARS]
- 4Valid code U04.91Probable severe acute respiratory syndrome [SARS]
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 U04.91 mean?
U04.91 is the ICD-10-CA code for “Probable severe acute respiratory syndrome [SARS]” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is U04.91 in ICD-10-CA?
U04.91 sits under U04 Severe acute respiratory syndrome [SARS], within U00-U49 Provisional codes for temporary assignment by World Health Organization of new diseases of uncertain etiology or emergency use, within Chapter 23: Provisional Codes for Research and Temporary Assignment.
What coding notes apply to U04.91?
ICD-10-CA lists Excludes notes for U04.91, 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.