G45.4
BillableTransient global amnesia
Transient global amnesia
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
Related Codes(6)
G45.0Vertebro-basilar artery syndrome
G45.1Carotid artery syndrome (hemispheric)
G45.2Multiple and bilateral precerebral artery syndromes
G45.3Amaurosis fugax
G45.8Oth transient cerebral ischemic attacks and related synd
G45.9Transient cerebral ischemic attack, unspecified
Related Conditions
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(37)
SNOMED CT
- RA - Retrograde amnesia51921000
- Retrograde amnesia51921000
- Antegrade amnesia88822006
- Anterograde amnesia88822006
- Temporary loss of memory162200009
- Temporary memory loss162200009
- Transient amnesia162200009
- Transient memory loss162200009
- Transitory amnesia162200009
- TGA - transient global amnesia230736007
- Transient global amnesia230736007
UMLS
- Amnesia, Transient GlobalC0338591
- Global Amnesia, TransientC0338591
- TGA (Transient Global Amnesia)C0338591
- TGA - transient global amnesiaC0338591
- TGAs (Transient Global Amnesia)C0338591
- Transient Global AmnesiaC0338591
- Transient global amnesiaC0338591
- Transient global amnesia (finding)C0338591
- global transient amnesiaC0338591
- transient global amnesiaC0338591
Clinical Terms
- global transient amnesia
- Global Amnesia, Transient
- Transitory amnesia
- TGAs (Transient Global Amnesia)
- TGA - transient global amnesia
- Transient global amnesia (finding)
- Anterograde amnesia
- RA - Retrograde amnesia
- Transient memory loss
- Antegrade amnesia
- Temporary memory loss
- Amnesia, Transient Global
- TGA (Transient Global Amnesia)
- Retrograde amnesia
- Temporary loss of memory
- Transient amnesia
Frequently Asked Questions
What is the ICD-10 code for transient global amnesia?
The ICD-10-CM code for transient global amnesia is G45.4. The full clinical description is "Transient global amnesia". G45.4 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code G45.4 mean?
ICD-10-CM code G45.4 represents “Transient global amnesia”. It is classified under Chapter 6: Diseases of the Nervous System and is a billable/specific code that can be used on a claim.
Is G45.4 a billable code?
Yes, G45.4 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is G45.4 in?
G45.4 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What codes cannot be used with G45.4?
G45.4 has Excludes1 notes indicating codes that cannot be used together with it, including: neonatal cerebral ischemia (P91.0); transient retinal artery occlusion (H34.0-); amnesia NOS (R41.3).
What SNOMED CT codes does G45.4 map to?
G45.4 maps to 4 SNOMED CT concepts: 88822006, 51921000, 230736007, 162200009. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for G45.4?
G45.4 is linked to 1 UMLS Concept Unique Identifier: C0338591. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does G45.4 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like transient global amnesia affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of G45.4?
G45.4 maps to the ICD-11 code: MB21.12 (Transient global amnesia).
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.