Specific code 2014 ICD-9-CM Diagnosis Code 331.82
Dementia with lewy bodies
  • Billable Code
  • Short description: Dementia w Lewy bodies.
  • ICD-9-CM 331.82 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 331.82 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Disease Synonyms
  • Dementia associated with Parkinson's Disease
  • Dementia due to Parkinsons disease
  • Dementia due to Parkinson's disease
  • Dementia in Parkinsons disease
  • Diffuse Lewy body disease
  • Lewy body dementia
  • Lewy body dementia w behavioral disturbance
  • Lewy body dementia with behavior disturbance
  • Lewy body dementia with behavioral disturbance
  • Lewy body dementia without behavioral disturbance
  • Lewy body dementia wo behavioral disturbance
  • Lewy body disease
  • Senile dementia of the Lewy body type
Clinical Information
  • A neurodegenerative disease characterized by dementia, mild parkinsonism, and fluctuations in attention and alertness. The neuropsychiatric manifestations tend to precede the onset of bradykinesia, muscle rigidity, and other extrapyramidal signs. Delusions and visual hallucinations are relatively frequent in this condition. Histologic examination reveals lewy bodies in the cerebral cortex and brain stem. Senile plaques and other pathologic features characteristic of alzheimer disease may also be present. (from neurology 1997;48:376-380; neurology 1996;47:1113-1124)
  • A progressive form of dementia characterized by the presence of protein deposits called lewy bodies in the midbrain and cerebral cortex, and loss of cholinergic and dopaminergic neurons. The signs and symptoms overlap with alzheimer and parkinson disease.
  • Lewy body disease is one of the most common causes of dementia in the elderly. Dementia is the loss of mental functions severe enough to affect normal activities and relationships. Lewy body disease happens when abnormal structures, called lewy bodies, build up in areas of the brain. The disease may cause a wide range of symptoms, including
    • changes in alertness and attention
    • hallucinations
    • problems with movement and posture
    • muscle stiffness
    • confusion
    • loss of memory
    lewy body disease can be hard to diagnose, because parkinson's disease and alzheimer's disease cause similar symptoms. Scientists think that lewy body disease might be related to these diseases, or that they sometimes happen together.lewy body disease usually begins between the ages of 50 and 85. The disease gets worse over time. There is no cure. Treatment focuses on drugs to help symptoms.
  • Neurodegenerative disease marked by the presence of lewy body cells in the cerebral cortex and brain stem. Symptoms often include dementia, parkinsonianism, and striking fluctuations in cognitive performance.
Applies To
  • Dementia with Parkinsonism
  • Lewy body dementia
  • Lewy body disease
Convert to ICD-10-CM: 331.82 converts directly to:
  • 2014 ICD-10-CM G31.83 Dementia with Lewy bodies
ICD-9-CM Volume 2 Index entries containing back-references to 331.82:
  • Dementia 294.20
    • Lewy body 331.82
      • with behavioral disturbance 331.82 [294.11]
      • without behavioral disturbance 331.82 [294.10]
  • Disease, diseased - see also Syndrome
    • Lewy body 331.82
      • with dementia
        • with behavioral disturbance 331.82 [294.11]
        • without behavioral disturbance 331.82 [294.10]
  • Lewy body dementia 331.82
  • Lewy body disease 331.82
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 331.82 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2014 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.