I67.84 – Cerebral vasospasm and vasoconstriction

ICD-10-CM 2027 diagnosis code · Cerebrovascular diseases

Non-billable header

ICD-10-CM code I67.84

Code: I67.84 (claims format: I6784)
Description: Cerebral vasospasm and vasoconstriction
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 9. Diseases of the circulatory system (I00-I99)
Block: I60-I69 Cerebrovascular diseases
Parent codes: I67 › I67.8

Billable codes under I67.84

I67.84 is a header code and cannot be used on claims. Choose the most specific code:

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

I67 – Other cerebrovascular diseases

Excludes1 (not coded here):

Occlusion and stenosis of cerebral artery causing cerebral infarction (I63.3-I63.5-)
Occlusion and stenosis of precerebral artery causing cerebral infarction (I63.2-)

Excludes2 (not included here):

sequelae of the listed conditions (I69.8)

Block I60-I69

Excludes1 (not coded here):

traumatic intracranial hemorrhage (S06.-)

Use additional code:

code to identify presence of:
alcohol abuse and dependence (F10.-)
exposure to environmental tobacco smoke (Z77.22)
history of tobacco dependence (Z87.891)
hypertension (I10-I1A)
occupational exposure to environmental tobacco smoke (Z57.31)
tobacco dependence (F17.-)
tobacco use (Z72.0)

Related codes in I67.8

I67.81 – Acute cerebrovascular insufficiencyBillable
I67.82 – Cerebral ischemiaBillable
I67.83 – Posterior reversible encephalopathy syndromeBillable
I67.85 – Hereditary cerebrovascular diseasesHeader
I67.89 – Other cerebrovascular diseaseBillable

Frequently asked questions

What is ICD-10 code I67.84?

I67.84 is the ICD-10-CM code for cerebral vasospasm and vasoconstriction, in the block I60-I69 (Cerebrovascular diseases).

Is I67.84 a billable code?

No. I67.84 is a header code with more specific child codes; report one of the billable codes listed above.

What category does I67.84 belong to?

It belongs to category I67 – Other cerebrovascular diseases.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.