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ICD10BillableValid for clinical use

ICD-10 Code G46.3: Brain stem stroke syndrome

G46.3 is a billable ICD-10 diagnosis code used to classify Brain stem stroke syndrome in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).

When is it used?

  • May be used when a clinician documents brain stem stroke syndrome in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
6Diseases of the nervous system (G00-G99)
block
G40-G47Episodic and paroxysmal disorders
category
G46Vascular syndromes of brain in cerebrovascular diseases
currentG46

Official coding notes

Inclusion terms
  • Benedikt syndrome
  • Claude syndrome
  • Foville syndrome
  • Millard-Gubler syndrome
  • Wallenberg syndrome
  • Weber syndrome

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

NeurologistGeneral Physician

Coverage-related procedures and services

CPT 0937Thigh
EXTERNAL ELECTROCARDIOGRAPHIC RECORDING FOR GREATER THAN 15 DAYS UP TO 30 DAYS BY CONTINUOUS RHYTHM RECORDING AND STORAGE; INCLUDING RECORDING, SCANNING ANALYSIS WITH REPORT, REVIEW AND INTERPRETATION BY A PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROFESSIONAL
Source: CMS coverage guidance
CPT 0938Thigh
EXTERNAL ELECTROCARDIOGRAPHIC RECORDING FOR GREATER THAN 15 DAYS UP TO 30 DAYS BY CONTINUOUS RHYTHM RECORDING AND STORAGE; RECORDING (INCLUDING CONNECTION AND INITIAL RECORDING)
Source: CMS coverage guidance
CPT 0940Thigh
EXTERNAL ELECTROCARDIOGRAPHIC RECORDING FOR GREATER THAN 15 DAYS UP TO 30 DAYS BY CONTINUOUS RHYTHM RECORDING AND STORAGE; REVIEW AND INTERPRETATION BY A PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROFESSIONAL
Source: CMS coverage guidance
CPT 0939Thigh
EXTERNAL ELECTROCARDIOGRAPHIC RECORDING FOR GREATER THAN 15 DAYS UP TO 30 DAYS BY CONTINUOUS RHYTHM RECORDING AND STORAGE; SCANNING ANALYSIS WITH REPORT
Source: CMS coverage guidance
CPT 93241high
EXTERNAL ELECTROCARDIOGRAPHIC RECORDING FOR MORE THAN 48 HOURS UP TO 7 DAYS BY CONTINUOUS RHYTHM RECORDING AND STORAGE; INCLUDES RECORDING, SCANNING ANALYSIS WITH REPORT, REVIEW AND INTERPRETATION
Source: CMS coverage guidance
CPT 93242high
EXTERNAL ELECTROCARDIOGRAPHIC RECORDING FOR MORE THAN 48 HOURS UP TO 7 DAYS BY CONTINUOUS RHYTHM RECORDING AND STORAGE; RECORDING (INCLUDES CONNECTION AND INITIAL RECORDING)
Source: CMS coverage guidance

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
G46.3

Common synonyms

Brain stem stroke syndrome

Frequently asked questions

Code details

CodeG46.3
SystemICD10
Display nameBrain stem stroke syndrome
ChapterDiseases of the nervous system (G00-G99)
BlockEpisodic and paroxysmal disorders

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Benedikt's paralysis or syndromeClaude's disease or syndromeCéstan(-Chenais)paralysis or syndromeFoville's(peduncular)disease or syndromeGubler-Millard paralysis or syndromeMillard-Gubler(-Foville)paralysis or syndromeParalysis, paralytic(complete) (incomplete)Paralysis, paralytic(complete) (incomplete)Paralysis, paralytic(complete) (incomplete)Paralysis, paralytic(complete) (incomplete)Paralysis, paralytic(complete) (incomplete)Syndrome

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.