Y56.5 ICD-10-CA code: Ophthalmological drugs and preparations causing adverse effect in therapeutic use
Y56.5 is the ICD-10-CA code for “Ophthalmological drugs and preparations causing adverse effect in therapeutic use” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
Y56.5Ophthalmological drugs and preparations causing adverse effect in therapeutic use
Short description: Ophth dr & preparations adv eff Rx use
ICD-10-CA · Canada · Also written Y565
Notes for Y56.5
As CIHI prints them, with any note Y56.5 takes from the headings above it.
Includes
- Glucocorticoids, topically usedFrom Y56 Topical agents primarily affecting skin and mucous membrane and ophthalmological, otorhinolaryngological and dental drugs
- 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.
- Accidents in the technique of administration of drugs, medicaments and biological substances in medical and surgical procedures (Y60-Y69)From Y40-Y59 Drugs, medicaments and biological substances causing adverse effects in therapeutic use
- Accidental overdose of drug or wrong drug given or taken in error (X40-X44)From Y40-Y84 Complications of medical and surgical care
Note
- For list of specific drugs classified under the fourth-character subdivisions, see Table of drugs and chemicals in Alphabetical Index.From Y40-Y59 Drugs, medicaments and biological substances causing adverse effects in therapeutic use
- 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 Y56.5 sits
- 1ChapterChapter 20: External causes of morbidity and mortality (V01-Y98)
- 2Block Y40-Y84Complications of medical and surgical care
- 3Block Y40-Y59Drugs, medicaments and biological substances causing adverse effects in therapeutic use
- 4Category Y56Topical agents primarily affecting skin and mucous membrane and ophthalmological, otorhinolaryngological and dental drugs
- 5Valid code Y56.5Ophthalmological drugs and preparations causing adverse effect in therapeutic use
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 Y56.5 mean?
Y56.5 is the ICD-10-CA code for “Ophthalmological drugs and preparations causing adverse effect in therapeutic use” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is Y56.5 in ICD-10-CA?
Y56.5 sits under Y56 Topical agents primarily affecting skin and mucous membrane and ophthalmological, otorhinolaryngological and dental drugs, within Y40-Y59 Drugs, medicaments and biological substances causing adverse effects in therapeutic use, 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 Y56.5?
ICD-10-CA lists Includes, Note, Excludes notes for Y56.5, 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 Y56.5
View Y56Y56.0Local antifungal, anti-infective and anti-inflammatory drugs, not elsewhere classified, causing adverse effect in therapeutic useY56.1Antipruritics causing adverse effect in therapeutic useY56.2Local astringents and local detergents causing adverse effect in therapeutic useY56.3Emollients, demulcents and protectants causing adverse effect in therapeutic useY56.4Keratolytics, keratoplastics and other hair treatment drugs and preparations causing adverse effect in therapeutic useY56.6Otorhinolaryngological drugs and preparations causing adverse effect in therapeutic useY56.7Dental drugs, topically applied causing adverse effect in therapeutic useY56.8Other topical agents causing adverse effect in therapeutic useY56.9Topical agent, unspecified, causing adverse effect in therapeutic use