U84 ICD-10-CA category: Resistance to other antimicrobial drugs
U84 isn’t a code on its own. Choose one of the 7 codes beneath it, the one the documentation supports.
Official description
U84Resistance to other antimicrobial drugs
ICD-10-CA · Canada
Codes in U84
U84 isn’t a code on its own. Open the code that matches what the note documents.
U84.0Resistance to antiparasitic drug(s)U84.1Resistance to antifungal drug(s)U84.2Resistance to antiviral drug(s)U84.3Resistance to tuberculostatic drug(s)U84.7Resistance to multiple antimicrobial drugsU84.8Resistance to other specified antimicrobial drugU84.9Resistance to unspecified antimicrobial drugsNotes for U84
As CIHI prints them, with any note U84 takes from the headings above it.
Use additional code
Add a code for this detail when the note documents it.
- Use additional code (B95-B98) to identify agents resistant to antimicrobial drugs.
Excludes
Conditions classified elsewhere.
- Resistance to antibiotics (U82-U83)
Note
- This category should never be used in primary coding. These codes are provided for use as supplementary or additional codes to identify the resistance of a condition to antimicrobial drugs.
Where U84 sits
- 1ChapterChapter 23: Provisional Codes for Research and Temporary Assignment
- 2Block U50-U99Provisional codes for research and temporary assignment in Canada
- 3Category U84Resistance to other antimicrobial drugs
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 U84 a valid ICD-10-CA code?
No. U84 (Resistance to other antimicrobial drugs) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 7 codes; record the one the documentation supports.
Where is U84 in ICD-10-CA?
U84 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 U84?
ICD-10-CA lists Note, Use additional code, Excludes notes for U84, 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.