Home > 2006 ICD-9-CM Diagnosis Codes > Diseases Of The Nervous System And Sense Organs 320-389 > Inflammatory Diseases Of The Central Nervous System 320-327 > Encephalitis myelitis and encephalomyelitis 323-
Non-specific code 2006 ICD-9-CM Diagnosis Code 323.6
Postinfectious encephalitis
  • Short description: POSTINFECT ENCEPHALITIS.
  • There are 3 ICD-9-CM codes below 323.6 that define this diagnosis in greater detail. Do not use this code on a reimbursement claim.
  • You are viewing the 2006 version of ICD-9-CM 323.6.
  • More recent version(s) of ICD-9-CM 323.6: 2007 2008 2009 2010 2011 2012 2013 2014 2015.
323.6 Excludes
  • encephalitis:
Applies To
  • Infectious acute disseminated encephalomyelitis (ADEM)
Code First
  • Code first underlying disease
ICD-9-CM Volume 2 Index entries containing back-references to 323.6:
  • ADEM (acute disseminated encephalomyelitis) (postinfectious) 136.9 [323.6]
    • infectious 323.6
  • Encephalitis (bacterial) (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) 323.9
    • acute - see also Encephalitis, viral
      • disseminated (postinfectious) NEC 136.9 [323.6]
        • postimmunization or postvaccination 323.5
      • inclusional 049.8
      • inclusion body 049.8
      • necrotizing 049.8
    • postexanthematous NEC 057.9 [323.6]
    • postinfectious NEC 136.9 [323.6]
    • postviral NEC 079.99 [323.6]
      • postexanthematous 057.9 [323.6]
        • specified NEC 057.8 [323.6]
  • Encephalomyelitis (chronic) (granulomatous) (hemorrhagic necrotizing, acute) (myalgic, benign) (see also Encephalitis) 323.9
    • acute disseminated (ADEM) (postinfectious) 136.9 [323.6]
      • infectious 323.6
      • noninfectious 323.8
      • postimmunization 323.5
  • Leukoencephalitis
    • acute hemorrhagic (postinfectious) NEC 136.9 [323.6]
      • postimmunization or postvaccinal 323.5
  • Leukoencephalopathy (see also Encephalitis) 323.9
    • acute necrotizing hemorrhagic (postinfectious) 136.9 [323.6]
      • postimmunization or postvaccinal 323.5
  • Meningoencephalomyelitis (see also Meningoencephalitis) 323.9
    • acute NEC 048
      • disseminated (postinfectious) 136.9 [323.6]
        • postimmunization or postvaccination 323.5
  • Myelinoclasis, perivascular, acute (postinfectious) NEC 136.9 [323.6]
    • postimmunization or postvaccinal 323.5
 323.52 ICD9Data.com 323.61 
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 323.6 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 2006 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
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