Y40-Y84 ICD-10-CA block: Complications of medical and surgical care
Y40-Y84 isn’t a code on its own. Choose one of the 320 codes beneath it, the one the documentation supports.
Official description
Y40-Y84Complications of medical and surgical care (Y40-Y84)
ICD-10-CA · Canada
Codes in Y40-Y84
Y40-Y84 isn’t a code on its own. Open the group that matches what the note documents.
Y40-Y59Drugs, medicaments and biological substances causing adverse effects in therapeutic use (184 codes)Y60-Y69Misadventures to patients during surgical and medical care (51 codes)Y70-Y82Medical devices associated with adverse incidents in diagnostic and therapeutic use (65 codes)Y83-Y84Surgical and other medical procedures as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure (20 codes)Notes for Y40-Y84
As CIHI prints them, with any note Y40-Y84 takes from the headings above it.
Includes
- Complications of medical devicescorrect drug properly administered in therapeutic or prophylactic dosage as the cause of any adverse effectmisadventures to patients during surgical and medical caresurgical and medical procedures as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure
Excludes
Conditions classified elsewhere.
- Accidental overdose of drug or wrong drug given or taken in error (X40-X44)
Note
- 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 Y40-Y84 sits
- 1ChapterChapter 20: External causes of morbidity and mortality (V01-Y98)
- 2Block Y40-Y84Complications of medical and surgical care
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 Y40-Y84 a valid ICD-10-CA code?
No. Y40-Y84 (Complications of medical and surgical care) is a block heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 320 codes; record the one the documentation supports.
Where is Y40-Y84 in ICD-10-CA?
Y40-Y84 sits under Chapter 20: External causes of morbidity and mortality (V01-Y98).
What coding notes apply to Y40-Y84?
ICD-10-CA lists Includes, Excludes, Note notes for Y40-Y84, 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.