{"code":"G31","type":"category","title":"Other degenerative diseases of nervous system, not elsewhere classified","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":["Reye's syndrome (G93.7)"],"isBillable":false,"sibling_codes":["G31.0","G31.1","G31.2","G31.8","G31.9"],"inclusionTerms":[],"sibling_titles":{"code":"G31.9","title":"Degenerative disease of nervous system, unspecified","isBillable":true},"useAdditionalCode":["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-)"],"clinicalDefinition":"Other degenerative diseases of nervous system, not elsewhere classified is a non-billable ICD-10-CM category code (G31). A more specific billable subcode must be selected for claims submission. Excludes2 (not included here): Reye's syndrome (G93.7). Use additional 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.","officialDefinition":"Other degenerative diseases of nervous system, not elsewhere classified is a non-billable ICD-10-CM category code (G31). A more specific billable subcode must be selected for claims submission. Excludes2 (not included here): Reye's syndrome (G93.7). Use additional 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-).","seventhCharacterInstructions":[],"workflowProtocols":[],"guidelines":{"whenToUse":[],"whenNotToUse":[],"commonBillingMistakes":[],"codeComparisons":[],"documentationChecklist":[]},"domainLandscape":{"summary":"Primary diagnostic domain and clinical landscape evaluation.","keyCategories":[],"diagnosticContinuum":"Progression continuum from acute presentation to resolution."},"children":[{"code":"G31.0","title":"Frontotemporal dementia","description":"Frontotemporal dementia is a non-billable ICD-10-CM category code (G31.0). A more specific billable subcode must be selected for claims submission. Excludes2 (not included here): Reye's syndrome (G93.7). Use additional 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-).","isBillable":false,"slug":"g31.0-frontotemporal-dementia"},{"code":"G31.01","title":"Pick's disease","description":"Pick's disease is a billable ICD-10-CM diagnosis code (G31.01). Inclusion terms: Primary progressive aphasia; Progressive isolated aphasia. Excludes2 (not included here): Reye's syndrome (G93.7). Use additional 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-).","isBillable":true,"slug":"g31.01-picks-disease"},{"code":"G31.09","title":"Other frontotemporal neurocognitive disorder","description":"Other frontotemporal neurocognitive disorder is a billable ICD-10-CM diagnosis code (G31.09). Inclusion terms: Frontal dementia. Excludes2 (not included here): Reye's syndrome (G93.7). Use additional code: code, if applicable, to identify mild neurocognitive disorders due to known physiological condition (F06.7-); 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-).","isBillable":true,"slug":"g31.09-other-frontotemporal-neurocognitive-disorder"},{"code":"G31.1","title":"Senile degeneration of brain, not elsewhere classified","description":"Senile degeneration of brain, not elsewhere classified is a billable ICD-10-CM diagnosis code (G31.1). Excludes1 (not coded here): Alzheimer's disease (G30.-); senility NOS (R41.81). Excludes2 (not included here): Reye's syndrome (G93.7). Use additional 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-).","isBillable":true,"slug":"g31.1-senile-degeneration-of-brain-not-elsewhere-classified"},{"code":"G31.2","title":"Degeneration of nervous system due to alcohol","description":"Degeneration of nervous system due to alcohol is a billable ICD-10-CM diagnosis code (G31.2). Inclusion terms: Alcoholic cerebellar ataxia; Alcoholic cerebellar degeneration; Alcoholic cerebral degeneration; Alcoholic encephalopathy; Dysfunction of the autonomic nervous system due to alcohol. Excludes2 (not included here): Reye's syndrome (G93.7). Use additional 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-). Code also: associated alcoholism (F10.-).","isBillable":true,"slug":"g31.2-degeneration-of-nervous-system-due-to-alcohol"},{"code":"G31.8","title":"Other specified degenerative diseases of nervous system","description":"Other specified degenerative diseases of nervous system is a non-billable ICD-10-CM category code (G31.8). A more specific billable subcode must be selected for claims submission. Excludes2 (not included here): Reye's syndrome (G93.7). Use additional 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-).","isBillable":false,"slug":"g31.8-other-specified-degenerative-diseases-of-nervous-system"},{"code":"G31.80","title":"Leukodystrophy, unspecified","description":"Leukodystrophy, unspecified is a billable ICD-10-CM diagnosis code (G31.80). Excludes2 (not included here): Reye's syndrome (G93.7). Use additional 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-).","isBillable":true,"slug":"g31.80-leukodystrophy-unspecified"},{"code":"G31.81","title":"Alpers disease","description":"Alpers disease is a billable ICD-10-CM diagnosis code (G31.81). Inclusion terms: Grey-matter degeneration. Excludes2 (not included here): Reye's syndrome (G93.7). Use additional 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-).","isBillable":true,"slug":"g31.81-alpers-disease"},{"code":"G31.82","title":"Leigh's disease","description":"Leigh's disease is a billable ICD-10-CM diagnosis code (G31.82). Inclusion terms: Subacute necrotizing encephalopathy. Excludes2 (not included here): Reye's syndrome (G93.7). Use additional 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-).","isBillable":true,"slug":"g31.82-leighs-disease"},{"code":"G31.83","title":"Neurocognitive disorder with Lewy bodies","description":"Neurocognitive disorder with Lewy bodies is a billable ICD-10-CM diagnosis code (G31.83). Inclusion terms: Lewy body dementia; Lewy body disease. Excludes2 (not included here): Reye's syndrome (G93.7). Use additional code: code, if applicable, to identify mild neurocognitive disorders due to known physiological condition (F06.7-); 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-).","isBillable":true,"slug":"g31.83-neurocognitive-disorder-with-lewy-bodies"},{"code":"G31.84","title":"Mild cognitive impairment of uncertain or unknown etiology","description":"Mild cognitive impairment of uncertain or unknown etiology is a billable ICD-10-CM diagnosis code (G31.84). Inclusion terms: Mild cognitive disorder NOS; Mild neurocognitive disorder of uncertain or unknown etiology. Excludes1 (not coded here): age related cognitive decline (R41.81); altered mental status (R41.82); cerebral degeneration (G31.9); cerebrovascular diseases (I60-I69); change in mental status (R41.82); cognitive deficits following (sequelae of) cerebral hemorrhage or infarction (I69.01-, I69.11-, I69.21-, I69.31-, I69.81-, I69.91-); cognitive impairment due to intracranial or head injury (S06.-); dementia (F01.-, F02.-, F03.-); mild neurocognitive disorder due to a known physiological condition (F06.7-); neurologic neglect syndrome (R41.4); personality change, nonpsychotic (F68.8). Excludes2 (not included here): Reye's syndrome (G93.7). Use additional code: code to identify presence of:; alcohol abuse and dependence (F10.-); exposure to environmental tobacco smoke (Z77.22); history of tobacco dependence (Z87.891); hypertension (I10-I1A); occupational exposure to environmental tobacco smoke (Z57.31); tobacco dependence (F17.-); tobacco use (Z72.0); 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-).","isBillable":true,"slug":"g31.84-mild-cognitive-impairment-of-uncertain-or-unknown-etiology"},{"code":"G31.85","title":"Corticobasal degeneration","description":"Corticobasal degeneration is a billable ICD-10-CM diagnosis code (G31.85). Excludes2 (not included here): Reye's syndrome (G93.7). Use additional 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-).","isBillable":true,"slug":"g31.85-corticobasal-degeneration"},{"code":"G31.86","title":"Alexander disease","description":"Alexander disease is a billable ICD-10-CM diagnosis code (G31.86). Excludes2 (not included here): Reye's syndrome (G93.7). Use additional 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-).","isBillable":true,"slug":"g31.86-alexander-disease"},{"code":"G31.87","title":"Primary progressive apraxia of speech","description":"Primary progressive apraxia of speech is a billable ICD-10-CM diagnosis code (G31.87). Excludes2 (not included here): Reye's syndrome (G93.7). Use additional 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-).","isBillable":true,"slug":"g31.87-primary-progressive-apraxia-of-speech"},{"code":"G31.89","title":"Other specified degenerative diseases of nervous system","description":"Other specified degenerative diseases of nervous system is a billable ICD-10-CM diagnosis code (G31.89). Excludes2 (not included here): Reye's syndrome (G93.7). Use additional 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-).","isBillable":true,"slug":"g31.89-other-specified-degenerative-diseases-of-nervous-system"},{"code":"G31.9","title":"Degenerative disease of nervous system, unspecified","description":"Degenerative disease of nervous system, unspecified is a billable ICD-10-CM diagnosis code (G31.9). Excludes2 (not included here): Reye's syndrome (G93.7). Use additional 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-).","isBillable":true,"slug":"g31.9-degenerative-disease-of-nervous-system-unspecified"}],"hierarchy":[],"relatedCodes":[],"relevantCPTCodes":[],"documentationTips":[],"caseStudies":[],"description":"","overview":""}