U99 ICD-10-CA category: Activity
U99 isn’t a code on its own. Choose one of the 82 codes beneath it, the one the documentation supports.
Official description
U99Activity
ICD-10-CA · Canada
Codes in U99
U99 isn’t a code on its own. Open the group that matches what the note documents.
U99.0While engaged in sports and recreational activity (76 codes)U99.1While engaged in leisure activityU99.2While working for an incomeU99.3While engaged in other types of workU99.4While resting, sleeping, eating or engaging in other vital activitiesU99.8While engaged in other specified activitiesU99.9During unspecified activityNotes for U99
CIHI’s list gives no includes, excludes or other notes for U99 or the headings above it.
Where U99 sits
- 1ChapterChapter 23: Provisional Codes for Research and Temporary Assignment
- 2Block U50-U99Provisional codes for research and temporary assignment in Canada
- 3Category U99Activity
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
Is U99 a valid ICD-10-CA code?
No. U99 (Activity) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 82 codes; record the one the documentation supports.
Where is U99 in ICD-10-CA?
U99 sits under U50-U99 Provisional codes for research and temporary assignment in Canada, within Chapter 23: Provisional Codes for Research and Temporary Assignment.
What coding notes apply to U99?
CIHI’s list gives no includes, excludes or other notes for U99 or the headings above it.
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 U99
View U50-U99U50Specificity for mode of transport of person injuredU51Specificity for mode of transport of counterpartU52Provisional code assignment of U52U82Resistance to betalactam antibioticsU83Resistance to other antibioticsU84Resistance to other antimicrobial drugsU85Resistance to antineoplastic drugsU98Place of occurrence