Y91.1 ICD-10-CA code: Moderate alcohol intoxication
Y91.1 is the ICD-10-CA code for “Moderate alcohol intoxication” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
Y91.1Moderate alcohol intoxication
ICD-10-CA · Canada · Also written Y911
Index terms
Entries in CIHI’s alphabetical index that lead to Y91.1. Searching the index by the condition the note names is how coders reach this code.
- Factors, supplemental, alcohol, intoxication, moderate
Notes for Y91.1
As CIHI prints them, with any note Y91.1 takes from the headings above it.
Includes
- Smell of alcohol on breath, moderate behavioural disturbance in functions and responses, or moderate difficulty in coordination.
Excludes
Conditions classified elsewhere.
- Evidence of alcohol involvement determined by blood alcohol content (Y90.-)From Y91 Evidence of alcohol involvement determined by level of intoxication
Note
- These categories may be used, if desired, to provide supplementary information concerning causes of morbidity and mortality. They are not to be used for single-condition coding in morbidity or mortality.From Y90-Y98 Supplementary factors related to causes of morbidity and mortality classified elsewhere
- This chapter, which in previous revisions of ICD constituted a supplementary classification, permits the classification of environmental events and circumstances as the cause of injury, poisoning and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used in addition to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter XIX, Injury, poisoning and certain other consequences of external causes (S00-T98). Causes of death should preferably be tabulated according to both Chapter XIX and Chapter XX, but if only one code is tabulated then the code from Chapter XX should be used in preference. Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter XX should be used to provide additional information for multiple-condition analysis only.From Chapter 20: External causes of morbidity and mortality (V01-Y98)
Where Y91.1 sits
- 1ChapterChapter 20: External causes of morbidity and mortality (V01-Y98)
- 2Block Y90-Y98Supplementary factors related to causes of morbidity and mortality classified elsewhere
- 3Category Y91Evidence of alcohol involvement determined by level of intoxication
- 4Valid code Y91.1Moderate alcohol intoxication
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 Y91.1 mean?
Y91.1 is the ICD-10-CA code for “Moderate alcohol intoxication” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is Y91.1 in ICD-10-CA?
Y91.1 sits under Y91 Evidence of alcohol involvement determined by level of intoxication, within Y90-Y98 Supplementary factors related to causes of morbidity and mortality classified elsewhere, within Chapter 20: External causes of morbidity and mortality (V01-Y98).
What coding notes apply to Y91.1?
ICD-10-CA lists Includes, Excludes, Note notes for Y91.1, 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.