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I64 ICD-10-CA code: Stroke, not specified as haemorrhage or infarction

I64 is the ICD-10-CA code for “Stroke, not specified as haemorrhage or infarction” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

I64

Stroke, not specified as haemorrhage or infarction

Short description: Stroke not spec haemorrhage or infarct

ICD-10-CA · Canada

Index terms

Entries in CIHI’s alphabetical index that lead to I64. Searching the index by the condition the note names is how coders reach this code.

  • Attack, cerebral
  • Coma, apoplectic
  • Syndrome, stroke
  • Accident, cerebral
  • Accident, craniovascular
  • Accident, cerebrovascular
  • Accident, vascular, brain
  • Episode, brain (apoplectic)
  • Seizure, seizures, paralysis
  • Episode, cerebral (apoplectic)
  • Apoplexia, apoplexy, apoplectic
  • Apoplexia, apoplexy, apoplectic, fit
  • Seizure, seizures, brain or cerebral
  • Apoplexia, apoplexy, apoplectic, brain
  • Apoplexia, apoplexy, apoplectic, attack
  • Apoplexia, apoplexy, apoplectic, bulbar
  • Apoplexia, apoplexy, apoplectic, chorea
  • Apoplexia, apoplexy, apoplectic, stroke
  • Chorea (gravis) (spasmodic), apoplectic
  • Seizure, seizures, apoplexy, apoplectic
  • Apoplexia, apoplexy, apoplectic, basilar
  • Apoplexia, apoplexy, apoplectic, seizure
  • Attack, cerebral, with diabetes mellitus
  • Apoplexia, apoplexy, apoplectic, cerebral
  • Collapse, vascular (peripheral), cerebral
  • Apoplexia, apoplexy, apoplectic, capillary
  • Apoplexia, apoplexy, apoplectic, congestive
  • Apoplexia, apoplexy, apoplectic, progressive
  • Stroke (apoplectic) (brain) (paralytic) (CVA)
  • Palsy, cerebral (congenital), not congenital, acute
  • Paralysis, paralytic (complete) (incomplete), stroke (current episode)

Notes for I64

As CIHI prints them, with any note I64 takes from the headings above it.

Includes

Use additional code

Add a code for this detail when the note documents it.

  • Use additional code from category (E10-E14) with fourth and fifth characters .52 to classify any associated diabetes mellitus.
  • Use additional code to identify presence of hypertension.From I60-I69 Cerebrovascular diseases

Excludes

Conditions classified elsewhere.

  • Sequelae of stroke (I69.4)
  • Transient cerebral ischaemic attacks and related syndromes (G45.-)traumatic intracranial haemorrhage (S06.-)vascular dementia (F01.-)From I60-I69 Cerebrovascular diseases
  • Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)systemic connective tissue disorders (M30-M36)transient cerebral ischaemic attacks and related syndromes (G45.-)From Chapter 9: Diseases of the circulatory system (I00-I99)

Where I64 sits

  1. 1ChapterChapter 9: Diseases of the circulatory system (I00-I99)
  2. 2Block I60-I69Cerebrovascular diseases
  3. 3Valid code I64Stroke, not specified as haemorrhage or infarction

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.

See I64 in the CIHI source

Frequently asked questions

What does ICD-10-CA code I64 mean?

I64 is the ICD-10-CA code for “Stroke, not specified as haemorrhage or infarction” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is I64 in ICD-10-CA?

I64 sits under I60-I69 Cerebrovascular diseases, within Chapter 9: Diseases of the circulatory system (I00-I99).

What coding notes apply to I64?

ICD-10-CA lists Includes, Use additional code, Excludes notes for I64, 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 I64

I60Subarachnoid haemorrhageI61Intracerebral haemorrhageI62Other nontraumatic intracranial haemorrhageI63Cerebral infarctionI65Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarctionI66Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarctionI67Other cerebrovascular diseasesI68Cerebrovascular disorders in diseases classified elsewhereI69Sequelae of cerebrovascular disease