ICD-9 Diagnosis Code 330.8

Cereb degen in child NEC

Diagnosis Code 330.8

ICD-9: 330.8
Short Description: Cereb degen in child NEC
Long Description: Other specified cerebral degenerations in childhood
This is the 2014 version of the ICD-9-CM diagnosis code 330.8

Code Classification
  • Diseases of the nervous system
    • Hereditary and degenerative diseases of the central nervous system (330-337)
      • 330 Cerebral degenerations usually manifest in childhood

Information for Medical Professionals

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The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Dementia due to Rett's syndrome
  • Infantile neuroaxonal dystrophy
  • Late infantile and juvenile neuroaxonal dystrophy
  • Leigh's disease
  • Progressive sclerosing poliodystrophy
  • Rett's disorder

Index of Diseases and Injuries
References found for the code 330.8 in the Index of Diseases and Injuries:

Information for Patients

Genetic Brain Disorders

Also called: Inborn genetic brain disorders

A genetic brain disorder is caused by a variation or a mutation in a gene. A variation is a different form of a gene. A mutation is a change in a gene. Genetic brain disorders affect the development and function of the brain.

Some genetic brain disorders are due to random gene mutations or mutations caused by environmental exposure, such as cigarette smoke. Other disorders are inherited, which means that a mutated gene or group of genes is passed down through a family. They can also be due to a combination of both genetic changes and other outside factors.

Some examples of genetic brain disorders include

  • Leukodystrophies
  • Phenylketonuria
  • Tay-Sachs disease
  • Wilson disease

Many people with genetic brain disorders fail to produce enough of certain proteins that influence brain development and function. These brain disorders can cause serious problems that affect the nervous system. Some have treatments to control symptoms. Some are life-threatening.

  • Lesch-Nyhan syndrome
  • Maple syrup urine disease
  • Menkes syndrome
  • Neuronal ceroid lipofuscinoses (NCLS)
  • Niemann-Pick disease

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Rett Syndrome

Rett syndrome is a rare genetic disease that causes developmental and nervous system problems, mostly in girls. It's related to autism spectrum disorder. Babies with Rett syndrome seem to grow and develop normally at first. Between 3 months and 3 years of age, though, they stop developing and even lose some skills. Symptoms include

  • Loss of speech
  • Loss of hand movements such as grasping
  • Compulsive movements such as hand wringing
  • Balance problems
  • Breathing problems
  • Behavior problems
  • Learning problems or intellectual disability

Rett syndrome has no cure. You can treat some of the symptoms with medicines, surgery, and physical and speech therapy. Most people with Rett syndrome live into middle age and beyond. They will usually need care throughout their lives.

NIH: National Institute of Child Health and Human Development

  • Rett syndrome

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