Specific code 2014 ICD-9-CM Diagnosis Code 046.3
Progressive multifocal leukoencephalopathy
  • Billable Code
  • Short description: Prog multifoc leukoencep.
  • ICD-9-CM 046.3 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 046.3 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Clinical Information
  • Demyelination in various part of the central nervous system, usually secondary to neoplastic disease; jc virus has been recovered from brain tissue.
Applies To
  • Multifocal leukoencephalopathy NOS
Convert to ICD-10-CM: 046.3 converts approximately to:
  • 2014 ICD-10-CM A81.2 Progressive multifocal leukoencephalopathy
ICD-9-CM Volume 2 Index entries containing back-references to 046.3:
  • Leukoencephalopathy (see also Encephalitis) 323.9
    • multifocal (progressive) 046.3
    • progressive multifocal 046.3
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 046.3 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.