Non-specific code 2006 ICD-9-CM Diagnosis Code 323.5
Encephalitis following immunization procedures
  • Short description: POSTIMMUNIZAT ENCEPHALIT.
  • There are 2 ICD-9-CM codes below 323.5 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 323.5.
  • More recent version(s) of ICD-9-CM 323.5: 2007 2008 2009 2010 2011 2012 2013 2014 2015.
Applies To
  • Encephalitis postimmunization or postvaccinal
  • Encephalomyelitis postimmunization or postvaccinal
ICD-9-CM Volume 2 Index entries containing back-references to 323.5:
  • Complications
    • vaccination 999.9
      • anaphylaxis NEC 999.4
      • cellulitis 999.3
      • encephalitis or encephalomyelitis 323.5
      • hepatitis (serum) (type B) (within 8 months after administration) - see Hepatitis, viral
      • infection (general) (local) NEC 999.3
      • jaundice (serum) (within 8 months after administration) - see Hepatitis, viral
      • meningitis 997.09 [321.8]
      • myelitis 323.5
      • protein sickness 999.5
      • reaction (allergic) 999.5
      • sepsis 999.3
      • serum intoxication, sickness, rash, or other serum reaction NEC 999.5
      • shock (allergic) (anaphylactic) 999.4
      • subacute yellow atrophy of liver (within 8 months after administration) - see Hepatitis, viral
      • vaccinia (generalized) 999.0
  • 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
    • following vaccination or other immunization procedure 323.5
    • postimmunization 323.5
    • postvaccinal (smallpox) 323.5
  • 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
    • due to or resulting from vaccination (any) 323.5
    • postimmunization 323.5
    • postvaccinal (smallpox) 323.5
  • Encephalopathy (acute) 348.30
    • due to
      • birth injury (intracranial) 767.8
      • dialysis 294.8
      • hyperinsulinism - see Hyperinsulinism
      • influenza (virus) 487.8
      • lack of vitamin (see also Deficiency, vitamin) 269.2
      • nicotinic acid deficiency 291.2
      • serum (nontherapeutic) (therapeutic) 999.5
      • syphilis 094.81
      • trauma (postconcussional) 310.2
        • current (see also Concussion, brain) 850.9
          • with skull fracture - see Fracture, skull, by site, with intracranial injury
      • vaccination 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
  • Myelitis (acute) (ascending) (cerebellar) (childhood) (chronic) (descending) (diffuse) (disseminated) (pressure) (progressive) (spinal cord) (subacute) (transverse) (see also Encephalitis) 323.9
    • postvaccinal 323.5
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 323.5 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.