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G45Non-billableSave

G45 - Transient cerebral ischemic attacks and related syndromes

ICD-10-CM Chapter 6: Diseases of the nervous system · G40-G47 Episodic and paroxysmal disorders (G40-G47) · Top-level category · FY2027

Coding Guidance

G45 is a non-billable heading. Report one of the 7 more specific codes below.

Includes, Excludes and Coding Notes

Excludes 1 — Not Coded HereFrom G45

Mutually exclusive: these conditions are never reported together with this code.

  • neonatal cerebral ischemia (P91.0)
  • transient retinal artery occlusion (H34.0-)
Excludes 2 — Not Included HereFrom Chapter G00-G99

Not part of this code; report both codes when the patient has both conditions.

  • 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)

More Specific Codes (7)

G45.0Vertebro-basilar artery syndrome→G45.1Carotid artery syndrome (hemispheric)→G45.2Multiple and bilateral precerebral artery syndromes→G45.3Amaurosis fugax→G45.4Transient global amnesia→G45.8Other transient cerebral ischemic attacks and related syndromes→G45.9Transient cerebral ischemic attack, unspecified→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with G45.