DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

G46 Vascular syndromes of brain in cerebrovascular diseases

  • Header · not billable

G46 is not billable. The category heads 9 billable codes in FY2027: the 9 codes directly below it.

Index → code

  • Avellis' syndrome → G46.8
  • Weber-Gubler syndrome → G46.3
  • Weber-Leyden syndrome → G46.3

Where it sits

  1. Chapter 6 Diseases of the nervous system (G00-G99)
  2. G40-G47 Episodic and paroxysmal disorders (G40-G47)
  3. G46 Vascular syndromes of brain in cerebrovascular diseases
Billable codes
9
Subdivisions
9
CC / MCC codes
3 / 0
HCC V28 codes
0
New FY2027
0
Index entries
36

Codes in G46

  1. G46.0
    Middle cerebral artery syndrome
    BillableCC
  2. G46.1
    Anterior cerebral artery syndrome
    BillableCC
  3. G46.2
    Posterior cerebral artery syndrome
    BillableCC
  4. G46.3
    Brain stem stroke syndrome
    Billable
    Inclusion terms 6

    Inclusion terms

    • Benedikt syndrome
    • Claude syndrome
    • Foville syndrome
    • Millard-Gubler syndrome
    • Wallenberg syndrome
    • Weber syndrome
  5. G46.4
    Cerebellar stroke syndrome
    Billable
  6. G46.5
    Pure motor lacunar syndrome
    Billable
  7. G46.6
    Pure sensory lacunar syndrome
    Billable
  8. G46.7
    Other lacunar syndromes
    Billable
  9. G46.8
    Other vascular syndromes of brain in cerebrovascular diseases
    Billable

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At G46

Code first

  • underlying cerebrovascular disease (I60-I69) I60 I69

Notes that also apply

Chapter 6 instructions (Excludes2 8): printed on the chapter 6 page.

Index entries

  • Benedikt's paralysis or syndrome → G46.3
  • Céstan (-Chenais) paralysis or syndrome → G46.3
  • Claude's disease or syndrome → G46.3
  • Foville's (peduncular) disease or syndrome → G46.3
  • Gubler-Millard paralysis or syndrome → G46.3
  • Millard-Gubler (-Foville) paralysis or syndrome → 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
  • Avellis' syndrome → G46.8
  • Paralysis, paralytic (complete) (incomplete)Benedikt's → G46.3
  • Paralysis, paralytic (complete) (incomplete)Céstan-Chenais → G46.3
  • Paralysis, paralytic (complete) (incomplete)Gubler (-Millard) → G46.3
  • Paralysis, paralytic (complete) (incomplete)Millard-Gubler-Foville → G46.3
  • Paralysis, paralytic (complete) (incomplete)Weber's → G46.3
  • SyndromeBenedikt's → G46.3
  • Syndromebrain stem stroke → G46.3
  • SyndromeFoville's (peduncular) → G46.3
  • SyndromeGubler-Millard → G46.3
  • SyndromeMillard-Gubler → G46.3
  • SyndromeWallenberg's → G46.3
  • SyndromeWeber-Gubler → G46.3
  • SyndromeWeber-Leyden → G46.3
  • SyndromeWeber's → G46.3
  • Syndromedorsolateral medullary → G46.4
  • Syndromelacunar NEC → G46.7
  • SyndromeAvellis' → G46.8
  • Syndromevascular NEC in cerebrovascular disease → G46.8
  • Syndromecerebellarstroke → G46.4
  • Syndromelateralmedullary → G46.4
  • Syndromepuremotor lacunar → G46.5
  • Syndromepuresensory lacunar → G46.6
  • Syndromecerebralarterymiddle → G46.0
  • Syndromecerebralarteryanterior → G46.1
  • Syndromecerebralarteryposterior → G46.2

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy