Y83.9 ICD-10-CA code: Surgical procedure, unspecified, as the cause of abnormal reaction or later complication, without mention of misadventure at the time of the procedure
Y83.9 is the ICD-10-CA code for “Surgical procedure, unspecified, as the cause of abnormal reaction or later complication, without mention of misadventure at the time of the procedure” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
Y83.9Surgical procedure, unspecified, as the cause of abnormal reaction or later complication, without mention of misadventure at the time of the procedure
Short description: Surg proc unspec w abn reactn w/o misadv
ICD-10-CA · Canada · Also written Y839
Index terms
Entries in CIHI’s alphabetical index that lead to Y83.9. Searching the index by the condition the note names is how coders reach this code.
- Complication (delayed) (of or following) (medical or surgical procedure), surgical operation NEC
- Surgical procedure, complication of (delayed or as an abnormal reaction without mention of misadventure)
Notes for Y83.9
As CIHI prints them, with any note Y83.9 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 procedureFrom Y40-Y84 Complications of medical and surgical care
Excludes
Conditions classified elsewhere.
- Breakdown or malfunctioning of medical device (during procedure) (after implantation) (ongoing use) (Y70-Y82)medical devices associated with adverse incidents due to external causes classified elsewhere (V01-Y59, Y85-Y87, Y89)misadventures to patients during surgical and medical care, classifiable to (Y60-Y69)From Y83-Y84 Surgical 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
- Accidental overdose of drug or wrong drug given or taken in error (X40-X44)From Y40-Y84 Complications of medical and surgical care
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 Y83.9 sits
- 1ChapterChapter 20: External causes of morbidity and mortality (V01-Y98)
- 2Block Y40-Y84Complications of medical and surgical care
- 3Block 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
- 4Category Y83Surgical operation and other surgical procedures as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure
- 5Valid code Y83.9Surgical procedure, unspecified, as the cause of abnormal reaction or later complication, without mention of misadventure at the time of the procedure
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 Y83.9 mean?
Y83.9 is the ICD-10-CA code for “Surgical procedure, unspecified, as the cause of abnormal reaction or later complication, without mention of misadventure at the time of the procedure” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is Y83.9 in ICD-10-CA?
Y83.9 sits under Y83 Surgical operation and other surgical procedures as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure, within Y83-Y84 Surgical 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, within Y40-Y84 Complications of medical and surgical care, within Chapter 20: External causes of morbidity and mortality (V01-Y98).
What coding notes apply to Y83.9?
ICD-10-CA lists Excludes, Includes, Note notes for Y83.9, 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.
Codes beside Y83.9
View Y83Y83.0Surgical operation with transplant of whole organ or tissue as the cause of abnormal reaction or later complication, without mention of misadventure at the time of the procedureY83.1Surgical operation with implant of artificial internal device as the cause of abnormal reaction or later complication, without mention of misadventure at the time of the procedureY83.2Surgical operation with anastomosis, bypass or graft as the cause of abnormal reaction or later complication, without mention of misadventure at the time of the procedureY83.3Surgical operation with formation of external stoma as the cause of abnormal reaction or later complication, without mention of misadventure at the time of the procedureY83.4Other reconstructive surgery as the cause of abnormal reaction or later complication, without mention of misadventure at the time of the procedureY83.5Amputation of limb(s) as the cause of abnormal reaction or later complication, without mention of misadventure at the time of the procedureY83.6Removal of other organ (partial) (total) as the cause of abnormal reaction or later complication, without mention of misadventure at the time of the procedureY83.8Other surgical procedures as the cause of abnormal reaction or later complication, without mention of misadventure at the time of the procedure