{"code":"G31.89","type":"code","title":"Other specified degenerative diseases of nervous system","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":["Reye's syndrome (G93.7)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true},"inclusionTerms":[],"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 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.","officialDefinition":"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-).","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":[],"hierarchy":[],"relatedCodes":[],"relevantCPTCodes":[],"documentationTips":[],"caseStudies":[],"description":"","overview":""}