Specific code 2013 ICD-9-CM Diagnosis Code 340
Multiple sclerosis
  • ICD-9-CM 340 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 340 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2013 version of ICD-9-CM 340.
  • More recent version(s) of ICD-9-CM 340: 2014.
Disease Synonyms
  • Chronic progressive multiple sclerosis (disorder)
  • Dementia due to multiple sclerosis w behavior changes
  • Dementia due to multiple sclerosis with altered behavior
  • Dementia from multiple sclerosis
  • Exacerbation of multiple sclerosis (disorder)
  • Multiple sclerosis (MS), chronic/progressive
  • Multiple sclerosis (MS), exacerbation
  • Multiple sclerosis (MS), primary progressive
  • Multiple sclerosis (MS), relapsing progressive
  • Multiple sclerosis (MS), relapsing remitting
  • Multiple sclerosis (MS), secondary progressive
  • Multiple sclerosis, chronic/progressive
  • Multiple sclerosis, exacerbation
  • Multiple sclerosis, primary progressive
  • Multiple sclerosis, relapsing progressive
  • Multiple sclerosis, relapsing remitting
  • Multiple sclerosis, secondary progressive
  • Primary progressive multiple sclerosis
  • Relapsing progressive multiple sclerosis
  • Relapsing remitting multiple sclerosis
  • Remittent-progressive multiple sclerosis
  • Secondary progressive multiple sclerosis
Applies To
  • Disseminated or multiple sclerosis:
    • NOS
    • brain stem
    • cord
    • generalized
Convert to ICD-10-CM: 340 converts directly to:
  • 2014 ICD-10-CM G35 Multiple sclerosis
ICD-9-CM Volume 2 Index entries containing back-references to 340:
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 340 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 2013 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.