Specific code 2015 ICD-9-CM Diagnosis Code 341.8
Other demyelinating diseases of central nervous system
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 341.8 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 341.8 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Convert to ICD-10-CM: 341.8 converts approximately to:
  • 2015/16 ICD-10-CM G37.1 Central demyelination of corpus callosum
  • 2015/16 ICD-10-CM G37.2 Central pontine myelinolysis
  • 2015/16 ICD-10-CM G37.8 Other specified demyelinating diseases of central nervous system
Approximate Synonyms
  • Acute disseminated demyelination
  • Central demyelination, corpus callosum
  • Central pontine myelinolysis
  • Disseminated acute demyelination
  • Disseminated demyelination, acute
  • Marchiafava-Bignami disease
  • Neuromyelitis
Clinical Information
  • Progressive degeneration of the corpus callosum characterized by progressive intellectual deterioration, emotional disturbances, confusion, hallucinations, tremor, rigidity, and convulsions; very rare disorder affecting chiefly middle-aged male alcoholics and patients with nutritional deficiency states
Applies To
  • Central demyelination of corpus callosum
  • Central pontine myelinosis
  • Marchiafava (-Bignami) disease
ICD-9-CM Volume 2 Index entries containing back-references to 341.8:
  • Demyelination, demyelinization
    • central nervous system 341.9
      • specified NEC 341.8
    • corpus callosum (central) 341.8
  • Disease, diseased - see also Syndrome
    • demyelinating, demyelinizating (brain stem) (central nervous system) 341.9
      • multiple sclerosis 340
      • specified NEC 341.8
    • Marchiafava (-Bignami) 341.8
  • Encephalopathy (acute) 348.30
    • demyelinating (callosal) 341.8
    • infantile cystic necrotizing (congenital) 341.8
  • Marchiafava (-Bignami) disease or syndrome 341.8
  • Myelinosis, central pontine 341.8
  • Neuromyelitis 341.8
  • Syndrome - see also Disease
    • Marchiafava-Bignami 341.8
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 341.8 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 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.