Code-level instructions

Includes

Korsakov's psychosis or syndrome, nonalcoholic

Excludes 1

amnesia NOS (R41.3)
anterograde amnesia (R41.1)
dissociative amnesia (F44.0)
retrograde amnesia (R41.2)

Excludes 2

alcohol-induced or unspecified Korsakov's syndrome (F10.26, F10.96)
Korsakov's syndrome induced by other psychoactive substances (F13.26, F13.96, F19.16, F19.26, F19.96)

Code first

the underlying physiological condition

Inherited instructions

Chapters 5 · Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

Includes

disorders of psychological development

Excludes 2

symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

F01-F09 · Mental disorders due to known physiological conditions (F01-F09)

Note

This block comprises a range of mental disorders grouped together on the basis of their having in common a demonstrable etiology in cerebral disease, brain injury, or other insult leading to cerebral dysfunction. The dysfunction may be primary, as in diseases, injuries, and insults that affect the brain directly and selectively; or secondary, as in systemic diseases and disorders that attack the brain only as one of the multiple organs or systems of the body that are involved.

Official index references (12)

Amentia (1)

Amentia › Meynert's(nonalcoholic)Disease index

Amnes(t)ic syndrome (post-traumatic) (1)

Amnes(t)ic syndrome (post-traumatic)Disease index

Disease, diseased (1)

Disease, diseased › Korsakoff's(nonalcoholic)Disease index

Disorder(of) (1)

Disorder(of) › amnesic, amnestic › due to(secondary to) general medical conditionDisease index

Korsakoff's(Wernicke) disease, psychosis or syndrome (alcoholic) (1)

Korsakoff's(Wernicke) disease, psychosis or syndrome (alcoholic) › nonalcoholicDisease index

Meynert's amentia(nonalcoholic) (1)

Meynert's amentia(nonalcoholic)Disease index

Psychosis, psychotic (1)

Psychosis, psychotic › Korsakoff's, Korsakov's, Korsakow's(nonalcoholic)Disease index

Syndrome (3)

Syndrome › Korsakoff(-Wernicke) (nonalcoholic)Disease index
Syndrome › organic › amnesic(not alcohol- or drug-induced)Disease index
Syndrome › Wernicke-Korsakoff(nonalcoholic)Disease index

Toxemica cerebropathia psychica(nonalcoholic) (1)

Toxemica cerebropathia psychica(nonalcoholic)Disease index

Wernicke-Korsakoff's syndrome or psychosis(alcoholic) (1)

Wernicke-Korsakoff's syndrome or psychosis(alcoholic) › nonalcoholicDisease index

References from other codes (2)

F44.0 · Dissociative amnesia

Excludes 2 · amnestic disorder due to known physiological condition (F04)

R41.3 · Other amnesia

Excludes 1 · amnestic disorder due to known physiologic condition (F04)

MS-DRG · 43.1

884 · Organic Disturbances and Intellectual Disability

2026-04-01 – 2026-09-30

Code history

No recorded change since first observation

ChangedUnchanged

FY2016

Effective from 2015-10-01

First observed

Amnestic disorder due to known physiological condition

Billable diagnosis code

CDC/NCHS · FY2016

All editions (19)

All editions	Effective from	Code history
FY2016	2015-10-01	First observed
FY2017	2016-10-01	No tabular change
FY2018	2017-10-01	No tabular change
FY2019	2018-10-01	No tabular change
FY2020	2019-10-01	No tabular change
FY2020 · April	2020-04-01	No tabular change
FY2021	2020-10-01	No tabular change
FY2021 · 01-01	2021-01-01	No tabular change
FY2022	2021-10-01	No tabular change
FY2022 · 04-01	2022-04-01	No tabular change
FY2023	2022-10-01	No tabular change
FY2023 · 04-01	2023-04-01	No tabular change
FY2024	2023-10-01	No tabular change
FY2024 · 04-01	2024-04-01	No tabular change
FY2025	2024-10-01	No tabular change
FY2025 · 04-01	2025-04-01	No tabular change
FY2026	2025-10-01	No tabular change
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Historical ICD-9 mappings · 2018

Historical mapping only; not an automatic code substitution.

294.0 · Approximate