2019 ICD-10-CM Diagnosis Code I67.4

Hypertensive encephalopathy

    2016 2017 2018 2019 Billable/Specific Code
  • I67.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM I67.4 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of I67.4 - other international versions of ICD-10 I67.4 may differ.
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (I67.4) and the excluded code together.
  • insufficiency, NOS, of precerebral arteries (
    ICD-10-CM Diagnosis Code G45.2

    Multiple and bilateral precerebral artery syndromes

      2016 2017 2018 2019 Billable/Specific Code
    G45.2
    )
The following code(s) above I67.4 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to I67.4:
  • I00-I99
    2019 ICD-10-CM Range I00-I99

    Diseases of the circulatory system

    Type 2 Excludes
    • 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.-)
    Diseases of the circulatory system
  • I60-I69
    2019 ICD-10-CM Range I60-I69

    Cerebrovascular diseases

    Type 1 Excludes
    • traumatic intracranial hemorrhage (S06.-)
    Use Additional
    • 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-I16)
    • occupational exposure to environmental tobacco smoke (Z57.31)
    • tobacco dependence (F17.-)
    • tobacco use (Z72.0)
    Cerebrovascular diseases
  • I67
    ICD-10-CM Diagnosis Code I67

    Other cerebrovascular diseases

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • sequelae of the listed conditions (I69.8)
    Other cerebrovascular diseases
Clinical Information
  • Brain dysfunction or damage resulting from sustained malignant hypertension. When blood pressure exceeds the limits of cerebral autoregulation, cerebral blood flow is impaired (brain ischemia). Clinical manifestations include headache; nausea; vomiting; seizures; altered mental status (in some cases progressing to coma); papilledema; and retinal hemorrhage.
ICD-10-CM I67.4 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
  • 077 Hypertensive encephalopathy with mcc
  • 078 Hypertensive encephalopathy with cc
  • 079 Hypertensive encephalopathy without cc/mcc

Convert I67.4 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
Code annotations containing back-references to I67.4:
  • Type 1 Excludes: G93.2
    , G93.4
    ICD-10-CM Diagnosis Code G93.2

    Benign intracranial hypertension

      2016 2017 2018 2019 Billable/Specific Code
    Type 1 Excludes
    • hypertensive encephalopathy (I67.4)
    ICD-10-CM Diagnosis Code G93.4

    Other and unspecified encephalopathy

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • alcoholic encephalopathy (G31.2)
    • encephalopathy in diseases classified elsewhere (G94)
    • hypertensive encephalopathy (I67.4)
    • toxic (metabolic) encephalopathy (G92)

Diagnosis Index entries containing back-references to I67.4:
  • Degeneration, degenerative
    • cerebrovascular I67.9
      ICD-10-CM Diagnosis Code I67.9

      Cerebrovascular disease, unspecified

        2016 2017 2018 2019 Billable/Specific Code
      • due to hypertension I67.4
  • Encephalopathy (acute) G93.40
    ICD-10-CM Diagnosis Code G93.40

    Encephalopathy, unspecified

      2016 2017 2018 2019 Billable/Specific Code
    • hypertensive I67.4
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) I10
    ICD-10-CM Diagnosis Code I10

    Essential (primary) hypertension

      2016 2017 2018 2019 Billable/Specific Code Questionable As Admission Dx
    Includes
    • high blood pressure
    • hypertension (arterial) (benign) (essential) (malignant) (primary) (systemic)
    Type 1 Excludes
    • hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
    Type 2 Excludes
    • essential (primary) hypertension involving vessels of brain (I60-I69)
    • essential (primary) hypertension involving vessels of eye (H35.0-)
    • encephalopathy I67.4
  • Lesion(s) (nontraumatic)
    • brain G93.9
      ICD-10-CM Diagnosis Code G93.9

      Disorder of brain, unspecified

        2016 2017 2018 2019 Billable/Specific Code
      • vascular I67.9
        ICD-10-CM Diagnosis Code I67.9

        Cerebrovascular disease, unspecified

          2016 2017 2018 2019 Billable/Specific Code
        • hypertensive I67.4
    • cerebrovascular I67.9
      ICD-10-CM Diagnosis Code I67.9

      Cerebrovascular disease, unspecified

        2016 2017 2018 2019 Billable/Specific Code
      • hypertensive I67.4

ICD-10-CM Codes Adjacent To I67.4
I66.23 Occlusion and stenosis of bilateral posterior cerebral arteries
I66.29 Occlusion and stenosis of unspecified posterior cerebral artery
I66.3 Occlusion and stenosis of cerebellar arteries
I66.8 Occlusion and stenosis of other cerebral arteries
I66.9 Occlusion and stenosis of unspecified cerebral artery
I67 Other cerebrovascular diseases
I67.0 Dissection of cerebral arteries, nonruptured
I67.1 Cerebral aneurysm, nonruptured
I67.2 Cerebral atherosclerosis
I67.3 Progressive vascular leukoencephalopathy
I67.4 Hypertensive encephalopathy
I67.5 Moyamoya disease
I67.6 Nonpyogenic thrombosis of intracranial venous system
I67.7 Cerebral arteritis, not elsewhere classified
I67.8 Other specified cerebrovascular diseases
I67.81 Acute cerebrovascular insufficiency
I67.82 Cerebral ischemia
I67.83 Posterior reversible encephalopathy syndrome
I67.84 Cerebral vasospasm and vasoconstriction
I67.841 Reversible cerebrovascular vasoconstriction syndrome
I67.848 Other cerebrovascular vasospasm and vasoconstriction

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.