2021 ICD-10-CM Diagnosis Code G46.3

Brain stem stroke syndrome

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • G46.3 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM G46.3 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of G46.3 - other international versions of ICD-10 G46.3 may differ.
Applicable To
  • Benedikt syndrome
  • Claude syndrome
  • Foville syndrome
  • Millard-Gubler syndrome
  • Wallenberg syndrome
  • Weber syndrome
The following code(s) above G46.3 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 G46.3:
  • G00-G99
    2021 ICD-10-CM Range G00-G99

    Diseases of the nervous 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)
    Diseases of the nervous system
  • G46
    ICD-10-CM Diagnosis Code G46

    Vascular syndromes of brain in cerebrovascular diseases

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Code First
    • underlying cerebrovascular disease (I60-I69)
    Vascular syndromes of brain in cerebrovascular diseases
Approximate Synonyms
  • Weber gubler syndrome
Clinical Information
  • A syndrome caused by an infarct in the vertebral or posterior inferior cerebellar artery. It is characterized by sensory defects affecting the same side of the face as the infarct and the opposite side of the trunk as the infarct. Patients experience difficulty swallowing and/or speaking.
  • Infarction of the dorsolateral aspect of medulla oblongata in the brain stem. It is caused by occlusion of the vertebral artery and/or the posterior inferior cerebellar artery. Clinical manifestations vary with the size of infarction, but may include loss of pain and temperature sensation in the ipsilateral face and contralateral body below the chin; ipsilateral horner syndrome; ipsilateral ataxia; dysarthria; vertigo; nausea, hiccup; dysphagia; and vocal cord paralysis. (from Adams et al., Principles of Neurology, 6th ed, p801)
ICD-10-CM G46.3 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 070 Nonspecific cerebrovascular disorders with mcc
  • 071 Nonspecific cerebrovascular disorders with cc
  • 072 Nonspecific cerebrovascular disorders without cc/mcc

Convert G46.3 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
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change

Diagnosis Index entries containing back-references to G46.3:
  • Benedikt's paralysis or syndrome G46.3
  • Céstan G46.3 (-Chenais)
  • Claude's disease or syndrome G46.3
  • Foville's G46.3 (peduncular)
  • Gubler-Millard paralysis or syndrome G46.3
  • Millard-Gubler G46.3 (-Foville)
  • Paralysis, paralytic (complete) (incomplete) G83.9
    ICD-10-CM Diagnosis Code G83.9

    Paralytic syndrome, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • Benedikt's G46.3
    • Céstan-Chenais G46.3
    • Gubler G46.3 (-Millard)
    • Millard-Gubler-Foville G46.3
    • Weber's G46.3
  • Syndrome - see also Disease
    • Benedikt's G46.3
    • brain stem stroke G46.3
    • Foville's G46.3 (peduncular)
    • Gubler-Millard G46.3
    • Millard-Gubler G46.3
    • Wallenberg's G46.3
    • Weber-Gubler G46.3
    • Weber-Leyden G46.3
    • Weber's G46.3
  • Wallenberg's disease or syndrome G46.3
  • Weber-Gubler syndrome G46.3
  • Weber-Leyden syndrome G46.3
  • Weber's paralysis or syndrome G46.3

ICD-10-CM Codes Adjacent To G46.3
G45.1 Carotid artery syndrome (hemispheric)
G45.2 Multiple and bilateral precerebral artery syndromes
G45.3 Amaurosis fugax
G45.4 Transient global amnesia
G45.8 Other transient cerebral ischemic attacks and related syndromes
G45.9 Transient cerebral ischemic attack, unspecified
G46 Vascular syndromes of brain in cerebrovascular diseases
G46.0 Middle cerebral artery syndrome
G46.1 Anterior cerebral artery syndrome
G46.2 Posterior cerebral artery syndrome
G46.3 Brain stem stroke syndrome
G46.4 Cerebellar stroke syndrome
G46.5 Pure motor lacunar syndrome
G46.6 Pure sensory lacunar syndrome
G46.7 Other lacunar syndromes
G46.8 Other vascular syndromes of brain in cerebrovascular diseases
G47 Sleep disorders
G47.0 Insomnia
G47.00 …… unspecified
G47.01 …… due to medical condition
G47.09 Other insomnia

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