Specific code 2012 ICD-9-CM Diagnosis Code 058.21
Human herpesvirus 6 encephalitis
  • Short description: Human herpesvir 6 enceph.
  • ICD-9-CM 058.21 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 058.21 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).
  • You are viewing the 2012 version of ICD-9-CM 058.21.
  • More recent version(s) of ICD-9-CM 058.21: 2013 2014 2015.
Convert to ICD-10-CM: 058.21 converts directly to:
  • 2015/16 ICD-10-CM B10.01 Human herpesvirus 6 encephalitis
Approximate Synonyms
  • Encephalitis due to human herpesvirus 6 infection
ICD-9-CM Volume 2 Index entries containing back-references to 058.21:
  • Encephalitis (bacterial) (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) 323.9
    • human herpesvirus 6 058.21
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 058.21 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 2012 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.