G31.9
BillableDegenerative disease of nervous system, unspecified
Degenerative disease of nervous system, unspecified
Coding Notes
Excludes 2
Conditions not included here, but the patient may have both
- 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)
- Reye's syndrome (G93.7)
Use Additional Code
Additional codes that should follow this code
- code, if applicable, for codes G31.0-G31.83, G31.85-G31.9, to identify:
- dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4)
- dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-)
- dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3)
- dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2)
- dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0)
- mild neurocognitive disorder due to known physiological condition (F06.7-)
Also Known As / Clinical Terms
SNOMED CT
- Hydrocephalus ex vacuo14055002
- Degenerative brain disorder52522001
- Degenerative disease of the central nervous system80690008
- Congenital blindness95486002
- Cerebellar degeneration95646004
- Circumscribed atrophy of brain111033008
- Cerebral degeneration due to Creutzfeldt-Jakob disease192818008
- Secondary cerebellar degeneration230241000
- Frontotemporal degeneration230273006
- Lobar atrophy230273006
- Frontal lobe degeneration with motor neurone disease230274000
- Chronic deafness232325008
- Cerebral atrophy278849000
- Frontal lobe degeneration278855005
- Cerebral degeneration presenting primarily with dementia279982005
- Cerebral degeneration418143002
- Cerebral degeneration due to Parkinson disease438513002
- Cerebral degeneration due to Parkinson's disease438513002
- Benson syndrome715574002
- Posterior cortical atrophy715574002
- Posterior cortical atrophy syndrome715574002
- Prieto Badia Mulas syndrome719140001
- X-linked intellectual disability with dysmorphism and cerebral atrophy syndrome719140001
- MOBA syndrome720010009
- Microphthalmia with brain atrophy syndrome720010009
- Syndromic microphthalmia type 10720010009
- Parkinsonism due to heredodegenerative disorder722965000
- Chorea due to heredodegenerative disorder722966004
- Autonomic nervous system disorder co-occurrent and due to neurodegenerative disorder724813004
- Autonomic nervous system disorder with neurodegenerative disorder724813004
- Epilepsy co-occurrent and due to degenerative brain disorder724988000
- Epilepsy with degenerative brain disorder724988000
- Progressive focal cortical atrophy737228009
- Gemignani syndrome782690007
- Spinocerebellar ataxia, amyotrophy, deafness syndrome782690007
- Pallidopyramidal syndrome783012006
- Parkinsonian pyramidal syndrome783012006
- Atrophy of hilum of dentate nucleus1144380009
- Atrophy of brainstem1144381008
- Atrophy of caudate nucleus1144383006
- Atrophy of pyramidal tract1144384000
- Atrophy of inner granular layer of cerebellar cortex1144385004
- Atrophy of Purkinje cells of cerebellar cortex1144386003
- Atrophy of cerebellar Purkinje layer1144386003
- Atrophy of cerebellar vermis1144387007
- Hemiatrophy of cerebellar cortex1144424004
- Diffuse atrophy of cerebellar structure1144426002
- Diffuse atrophy of cerebellum1144426002
- Diffuse atrophy of cerebral structure1144427006
- Diffuse atrophy of cerebrum1144427006
- Atrophy of cortex of frontal lobe1144428001
- Atrophy of cortex of frontal and temporal lobe1144429009
- Frontotemporal cerebral atrophy1144429009
- Global brain atrophy1144430004
- Atrophy of hippocampus1144431000
- Hippocampal atrophy1144431000
- Atrophy of hypothalamus1144432007
- Hypothalamic atrophy1144432007
- Atrophy of cortex of occipital lobe1144433002
- Occipital cortical atrophy1144433002
- Atrophy of cortex of parietal lobe1144434008
- Parietal cortical atrophy1144434008
- Atrophy of pons and cerebellar structure1144436005
- Atrophy of pons and cerebellum1144436005
- Pontocerebellar atrophy1144436005
- Atrophy of spinocerebellar tract1144438006
- Spinocerebellar atrophy1144438006
- Atrophy of cortex of temporal lobe1144439003
- Temporal cortical atrophy1144439003
- Hydrocephalus ex vacuo due to degenerative brain disorder1260342005
- FINCA (fibrosis, neurodegeneration, cerebral angiomatosis) syndrome1348304006
- Fibrosis, neurodegeneration, cerebral angiomatosis syndrome1348304006
- Interstitial lung fibrosis, neurodegeneration, cerebral angiomatosis syndrome1348304006
- Cerebral cortical hemiatrophy1366140004
- Hemiatrophy of cerebral cortex1366140004
- Acquired cerebral atrophy691461000119103
- Chronic fibrosing ILD-interstitial lung disease460561000124109
- PF-ILD-progressive fibrosing interstitial lung disease460561000124109
- Progressive fibrosing interstitial lung disease460561000124109
- Progressive lung fibrosis460561000124109
UMLS
- DEGENERATIVE DIS NERVOUS SYSTEMC0524851
- DEGENERATIVE DIS NEUROLOGICC0524851
- DEGENERATIVE NEUROLOGIC DISC0524851
- Degenerative Condition, NeurologicC0524851
- Degenerative Conditions, NeurologicC0524851
- Degenerative Disease of Nervous System, UnspecifiedC0524851
- Degenerative Diseases, Nervous SystemC0524851
- Degenerative Diseases, NeurologicC0524851
- Degenerative Neurologic DiseaseC0524851
- Degenerative Neurologic DiseasesC0524851
- Degenerative Neurologic DisorderC0524851
- Degenerative Neurologic DisordersC0524851
- Degenerative disease of nervous system, unspecifiedC0524851
- NERVOUS SYSTEM DEGENERATIVE DISC0524851
- NEURODEGENERATIVE DISC0524851
- NEUROLOGIC DEGENERATIVE DISC0524851
- NEUROLOGIC DIS DEGENERATIVEC0524851
- Nervous System Degenerative DiseasesC0524851
- Neurodegenerative DiseaseC0524851
- Neurodegenerative DiseasesC0524851
- Neurodegenerative DisorderC0524851
- Neurodegenerative DisordersC0524851
- Neurodegenerative diseaseC0524851
- Neurodegenerative diseasesC0524851
- Neurodegenerative disorderC0524851
- Neurologic Degenerative ConditionC0524851
- Neurologic Degenerative ConditionsC0524851
- Neurologic Degenerative DiseaseC0524851
- Neurologic Degenerative DiseasesC0524851
- Neurologic Disease, DegenerativeC0524851
- Neurologic Diseases, DegenerativeC0524851
- Neurologic Disorder, DegenerativeC0524851
- Neurologic Disorders, DegenerativeC0524851
- degenerative disorders neurologicC0524851
- degenerative neurologic diseasesC0524851
- degenerative neurologic disorderC0524851
- disease neurodegenerativeC0524851
- diseases neurodegenerativeC0524851
- neurodegenerative diseaseC0524851
- neurodegenerative diseasesC0524851
- neurodegenerative disorderC0524851
- neurodegenerative disordersC0524851
Frequently Asked Questions
What is ICD-10 code G31.9?
ICD-10-CM code G31.9 represents "Degenerative disease of nervous system, unspecified". It is a billable/specific code that can be used on a claim.
Is G31.9 a billable code?
Yes, G31.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is G31.9 in?
G31.9 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
Are additional codes required with G31.9?
Yes, when using G31.9 you should also code: code, if applicable, for codes G31.0-G31.83, G31.85-G31.9, to identify:; dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4); dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-); dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3); dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2); dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0); mild neurocognitive disorder due to known physiological condition (F06.7-).
What SNOMED CT codes does G31.9 map to?
G31.9 maps to 51 SNOMED CT concepts: 691461000119103, 1144386003, 1144381008, 1144383006, 1144387007, and 46 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for G31.9?
G31.9 is linked to 1 UMLS Concept Unique Identifier: C0524851. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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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.