Burden of neurodegenerative diseases: Mixed or other specified dementia SNOMED

Metadata

Coding system
SNOMED CT (UK Clinical Edition)
Coding system release
42.4.0
Organisation
University of Bristol
Codelist ID
bristol/burden-of-neurodegenerative-diseases-other-specified-snomed
Version ID
496bc0fd
Number of codes included
111

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Versions

  1. 496bc0fd Published
    Created: 02 Sep 2026 at 13:44

About

Description

The SNOMED code lists were created by compiling codes from the Quality and Outcomes Framework lists (e.g. QOF Dementia Cluster) and the NHS Digital Primary Care Domain Refsets. (e.g. for Parkinson's etc).

Methodology

Context

The codelist is for use in a neurodegenerative disease burden study (Bristol/ Edinburgh/ Cambridge) to categorise dementias by subtypes.

Inclusion/exclusion criteria

Codes that indicate a diagnosis of dementia due to a specific cause, not falling otherwise under categories outlined in the study (AD, VD, FTD, LBD). Mixed dementia code is included as this implies that at least two specific pathologies are known. See Github link for discussion of subcategories split.

Borderline cases

Mixed dementia - see above and Github link.

Sensitivity vs specificity

Codelist is designed to be specific for dementia diagnosis (as opposed to "memory issues" or "cognitive impairment").

Additional information

Proposed by W Whiteley & S Sarepalli. Reviewed and modified by A Tamborska & W Shi.

References

Signed off by

  • Arina Tamborska, (Sept. 2, 2026)

Codelists are developed by a broad community of users for individual study purposes, which may or may not meet the needs of other studies. They should not be thought of as universal definitions of a particular condition.

We don't offer any guarantees about what they do or don't identify. Users should carefully check that any codelist meets their needs, and seek clinical input where appropriate.

code term
111480006 Psychoactive substance-induced organic dementia
1148924004 Dementia due to deficiency of folic acid
1186877003 Dementia due to vitamin E deficiency
1186879000 Dementia due to thiamine deficiency
1186880002 Dementia due to cobalamin deficiency
1186881003 Dementia due to niacin deficiency
1186883000 Dementia due to nutritional deficiency disorder
1186887004 Dementia caused by manganese and/or manganese compound
1187004001 Chronic traumatic encephalopathy
1187126002 Integral membrane protein 2B related amyloidosis
1259465009 Dementia due to hepatic failure
1259467001 Dementia due to hypercalcemia
1259471003 Dementia due to Hashimoto encephalopathy
1259473000 Dementia due to fragile X syndrome
1259476008 Dementia due to genetic disease
1259485008 Dementia due to cerebral vasculitis
1259492003 Dementia due to metastatic malignant neoplasm to brain
1259494002 Dementia due to leukodystrophy
1259496000 Dementia due to Lyme disease
1259511006 Dementia due to Wilson disease
1259513009 Dementia due to Whipple disease
1259517005 Dementia due to systemic lupus erythematosus
1259519008 Dementia due to subacute sclerosing panencephalitis
1259524006 Dementia due to trypanosomiasis
1259579003 Dementia due to Behcet syndrome
1259581001 Dementia due to celiac disease
1259584009 Dementia due to and following dialysis
1259586006 Dementia due to autoimmune encephalitis
1259591007 Dementia due to acquired hypothyroidism
1259656006 Dementia due to renal failure
1259661008 Dementia due to inflammatory disorder of musculoskeletal system
1259663006 Dementia due to polyarteritis nodosa
1259667007 Dementia due to paraneoplastic encephalitis
1259675001 Dementia due to obstructive hydrocephalus
1259677009 Dementia due to multiple system atrophy
1259679007 Dementia due to atypical pantothenate kinase associated neurodegeneration
1259990004 Dementia due to classical pantothenate kinase associated neurodegeneration
1260328002 Familial multiple system deposition of tau protein
12741002 AIDS with dementia
130121000119104 Dementia due to Rett syndrome
191474008 Alcoholic dementia: [other] or [NOS]
191493005 Dementia caused by drug
192173009 [X]Dementia in other diseases classified elsewhere
192176001 [X]Dementia in Huntington's disease
192178000 Acquired immune deficiency syndrome dementia complex
192179008 [X]Dementia in other specified diseases classif elsewhere
20484008 Prion disease
230281007 Argyrophilic grain disease
230282000 Post-traumatic dementia
230283005 Punch drunk syndrome
230290000 Epileptic dementia
231463001 Alcoholic dementia NOS
266134000 Tabes dorsalis
268615009 Other alcoholic dementia
281004 Dementia associated with alcoholism
32875003 Inhalant-induced persisting dementia
397791000000109 [X]Dementia in other specified diseases classified elsewhere
414361000000104 [X]Dementia in Huntington's disease
420614009 Organic dementia with acquired immunodeficiency syndrome
421023003 Presenile dementia with acquired immunodeficiency syndrome
421529006 Dementia with acquired immunodeficiency syndrome
442344002 Dementia due to Huntington chorea
464291000000103 [X]Dementia in other diseases classified elsewhere
51928006 General paresis - neurosyphilis
544871000000102 Other alcoholic dementia
59651006 Sedative, hypnotic AND/OR anxiolytic-induced persisting dementia
62102009 AIDS with presenile dementia
62239001 Parkinson-dementia complex of Guam
671511000000100 Alcoholic dementia NOS
698624003 Dementia associated with cerebral lipidosis
698625002 Dementia associated with normal pressure hydrocephalus
698626001 Dementia associated with multiple sclerosis
698687007 Post-traumatic dementia with behavioral change
698725008 Dementia associated with neurosyphilis
698726009 Dementia associated with viral encephalitis
698781002 Dementia associated with cerebral anoxia
702421006 Familial encephalopathy with neuroserpin inclusion bodies
713488003 Presenile dementia co-occurrent with human immunodeficiency virus infection
713844000 Dementia co-occurrent with human immunodeficiency virus infection
715737004 Parkinsonism co-occurrent with dementia of Guadeloupe
721219005 Familial Alzheimer-like prion disease
721255002 Acquired prion disease
722977005 Dementia co-occurrent and due to neurocysticercosis
722978000 Toxic dementia
722979008 Dementia due to metabolic abnormality
722980006 Dementia due to chromosomal anomaly
724777003 Dementia due to infectious disease
733184002 Dementia caused by heavy metal exposure
733185001 Dementia following injury caused by exposure to ionizing radiation
733190003 Dementia due to primary malignant neoplasm of brain
733191004 Dementia due to chronic intracranial subdural hematoma
733192006 Dementia due to herpes encephalitis
733193001 Dementia co-occurrent and due to progressive multifocal leukoencephalopathy
733194007 Dementia co-occurrent and due to Down syndrome
762350007 Dementia due to prion disease
762351006 Dementia due to and following injury of head
774069007 Protein kinase cAMP-dependent type I regulatory subunit beta-related neurodegenerative dementia with intermediate filaments
783161005 Familial dementia British type
783258000 Familial dementia Danish type
788898005 Dementia caused by volatile inhalant
788899002 Dementia due to pellagra
79341000119107 Mixed dementia
79358009 Transmissible virus dementia
82361000119107 Altered behavior in dementia due to Huntington chorea
82371000119101 Dementia due to multiple sclerosis with altered behavior
82381000119103 Epileptic dementia with behavioral disturbance
82959004 Dementia paralytica juvenilis
840464007 Dementia due to carbon monoxide poisoning
840465008 Dementia due to iron deficiency
90194001 AIDS with organic dementia
9345005 Dialysis dementia

This page shows the search terms that were used to build the codelist. Concepts that match the search terms, but which were excluded, are in faint grey.

Language disorder of dementia

Included 0 out of 1 matching concepts.

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  • Language disorder of dementia (229672009)

code: 1089521000000106

Included 0 out of 1 matching concepts.

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  • Predominantly cortical dementia (1089521000000106)

code: 1186724002

Included 0 out of 1 matching concepts.

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  • HtrA serine peptidase 1-related autosomal dominant cerebral small vessel disease (1186724002)

code: 1259476008

Included 8 out of 11 matching concepts.

Show matching concepts
  • Altered behavior in dementia due to Huntington chorea (82361000119107)
  • Dementia due to Gerstmann Straussler Scheinker syndrome (1259469003)
  • Dementia due to Huntington chorea (442344002)
  • Dementia due to Rett syndrome (130121000119104)
  • Dementia due to Wilson disease (1259511006)
  • Dementia due to atypical pantothenate kinase associated neurodegeneration (1259679007)
  • Dementia due to classical pantothenate kinase associated neurodegeneration (1259990004)
  • Dementia due to familial Creutzfeldt-Jakob disease (1259478009)
  • Dementia due to fatal familial insomnia (1259480003)
  • Dementia due to fragile X syndrome (1259473000)
  • Dementia due to genetic disease (1259476008)

code: 1259485008

Included 1 out of 1 matching concepts.

Show matching concepts
  • Dementia due to cerebral vasculitis (1259485008)

code: 1259517005

Included 1 out of 1 matching concepts.

Show matching concepts
  • Dementia due to systemic lupus erythematosus (1259517005)

code: 1259663006

Included 1 out of 1 matching concepts.

Show matching concepts
  • Dementia due to polyarteritis nodosa (1259663006)

code: 12741002

Included 1 out of 1 matching concepts.

Show matching concepts
  • AIDS with dementia (12741002)

code: 191474008

Included 1 out of 1 matching concepts.

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  • Alcoholic dementia: [other] or [NOS] (191474008)

code: 192167008

Included 0 out of 1 matching concepts.

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  • [X]Dementia: [multi-infarct] or [predominantly cortical] (192167008)

code: 192173009

Included 1 out of 1 matching concepts.

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  • [X]Dementia in other diseases classified elsewhere (192173009)

code: 192176001

Included 1 out of 1 matching concepts.

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  • [X]Dementia in Huntington's disease (192176001)

code: 192178000

Included 1 out of 1 matching concepts.

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  • Acquired immune deficiency syndrome dementia complex (192178000)

code: 192179008

Included 1 out of 1 matching concepts.

Show matching concepts
  • [X]Dementia in other specified diseases classif elsewhere (192179008)

code: 230283005

Included 1 out of 1 matching concepts.

Show matching concepts
  • Punch drunk syndrome (230283005)

code: 230290000

Included 1 out of 1 matching concepts.

Show matching concepts
  • Epileptic dementia (230290000)

code: 231463001

Included 1 out of 1 matching concepts.

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  • Alcoholic dementia NOS (231463001)

code: 266134000

Included 1 out of 1 matching concepts.

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  • Tabes dorsalis (266134000)

code: 278857002

Included 0 out of 1 matching concepts.

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  • Dementia of frontal lobe type (278857002)

code: 29672009

Included 0 out of 0 matching concepts.

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code: 390000004

Included 0 out of 1 matching concepts.

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  • Binswanger's disease (390000004)

code: 397791000000109

Included 1 out of 1 matching concepts.

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  • [X]Dementia in other specified diseases classified elsewhere (397791000000109)

code: 414361000000104

Included 1 out of 1 matching concepts.

Show matching concepts
  • [X]Dementia in Huntington's disease (414361000000104)

code: 464291000000103

Included 1 out of 1 matching concepts.

Show matching concepts
  • [X]Dementia in other diseases classified elsewhere (464291000000103)

code: 62102009

Included 1 out of 1 matching concepts.

Show matching concepts
  • AIDS with presenile dementia (62102009)

code: 62239001

Included 1 out of 1 matching concepts.

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  • Parkinson-dementia complex of Guam (62239001)

code: 671511000000100

Included 1 out of 1 matching concepts.

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  • Alcoholic dementia NOS (671511000000100)

code: 715574002

Included 0 out of 1 matching concepts.

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  • Posterior cortical atrophy syndrome (715574002)

code: 733185001

Included 1 out of 1 matching concepts.

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  • Dementia following injury caused by exposure to ionizing radiation (733185001)

code: 762707000

Included 0 out of 4 matching concepts.

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  • Mixed cortical and subcortical vascular dementia (230287006)
  • Subcortical dementia (762707000)
  • Subcortical leukoencephalopathy (90099008)
  • Subcortical vascular dementia (230286002)

code: 79341000119107

Included 1 out of 1 matching concepts.

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  • Mixed dementia (79341000119107)

code: 79358009

Included 1 out of 1 matching concepts.

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  • Transmissible virus dementia (79358009)

code: 88339003

Included 0 out of 1 matching concepts.

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  • Dementia arising in the senium AND/OR presenium (88339003)

code: 90194001

Included 1 out of 1 matching concepts.

Show matching concepts
  • AIDS with organic dementia (90194001)