2027 ICD-10-CM Diagnosis Code I67.9Cerebrovascular disease, unspecified
ICD-10-CM Codes›I00–I99›I60-I69›I67
- Billable — Valid for Submission
- Chronic Condition
I67.9 is a billable ICD-10-CM diagnosis code for cerebrovascular disease, unspecified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 70 through 72. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other and ill-defined cerebrovascular disease.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acute vestibular syndrome
- Acute vestibular syndrome due to cerebrovascular disease
- Asymptomatic cerebrovascular disease
- Cerebrovascular abnormality due to Takayasu disease
- Cerebrovascular disease
- Cerebrovascular disease due to late-delayed irradiation of brain
- Cerebrovascular disorder due to paradoxical embolus
- Cerebrovascular disorder in the puerperium
- Diffuse cerebrovascular disease
- Disorder of basilar artery
- Disorder of intracranial venous sinus
- Hydrocephalus ex vacuo
- Hydrocephalus ex vacuo due to cerebrovascular disease
- Post-radiotherapy cerebral vasculopathy
- Small vessel cerebrovascular disease
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to I67.9: its own notes plus those printed at I67, block I60-I69, and Chapter 9. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- traumatic intracranial hemorrhage (S06.-)
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- sequelae of the listed conditions (I69.8)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Disease, diseased See Also: Syndrome;
artery See Also: Disease, arterial; I77.9
cerebral I67.9
arterial, artery I67.9
cerebrovascular I67.9
vascular I67.9
degenerative I67.9
cerebrovascular I67.9
degenerative I67.9
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Cerebrovascular Disorders
a spectrum of pathological conditions of impaired blood flow in the brain. they can involve vessels (arteries or veins) in the cerebrum, the cerebellum, and the brain stem. major categories include intracranial arteriovenous malformations; brain ischemia; cerebral hemorrhage; and others.
Patient EducationClinical
Brain Diseases
Your brain is the control center of your body. It controls your thoughts, memory, speech, and movement. It regulates the function of many organs. It's part of your nervous system, which also includes your spinal cord and peripheral nerves. The nervous system sends signals between your brain and the rest of the body.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert I67.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About I67.9Overview
What is the ICD-10 code for cerebrovascular disease, unspecified?
The ICD-10-CM code for cerebrovascular disease, unspecified is I67.9 (sometimes written as I679). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is I67.9 (Other cerebrovascular diseases) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report cerebrovascular disease, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does I67.9 group to?
When cerebrovascular disease, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 72, 70, 71, with relative weights from 0.7344 to 1.6089 depending on complications. Higher weights mean higher Medicare reimbursement.
Can I67.9 be reported with a code from I63.2?
Not as a rule. The Excludes1 note at I67, which applies to I67.9, lists "Occlusion and stenosis of precerebral artery causing cerebral infarction (I63.2-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of I67.9?
Under the General Equivalence Mappings, cerebrovascular disease, unspecified converts to ICD-9-CM 437.9 (cerebrovasc disease NOS). The mapping is a direct match.
