2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Nervous System And Sense Organs 320-389 > Inflammatory Diseases Of The Central Nervous System 320-327 > Encephalitis Myelitis And Encephalomyelitis 323.* > 2008 ICD-9-CM Diagnosis 323.51 Encephalitis and encephalomyelitis following immunization procedures  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 323.51 can be accessed here. 323.51 is a specific code that can be used to specify a diagnosis 323.51 contains 16 index entries View the ICD-9-CM Volume 1 323.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. 323.51 also known as: Encephalitis postimmunization or postvaccinal Encephalomyelitis postimmunization or postvaccinal Index entries containing 323.51: Complications vaccination 999.9 encephalitis or encephalomyelitis 323.51 Encephalitis (bacterial) (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) 323.9 acute - see also Encephalitis, viral disseminated (postinfectious) NEC 136.9 [323.61] postimmunization or postvaccination 323.51 due to prophylactic inoculation against smallpox 323.51 vaccination (smallpox) 323.51 following vaccination or other immunization procedure 323.51 postimmunization 323.51 postvaccinal (smallpox) 323.51 Encephalomyelitis (chronic) (granulomatous) (hemorrhagic necrotizing, acute) (myalgic, benign) (see also Encephalitis) 323.9 acute disseminated (ADEM) (postinfectious) 136.9 [323.61] postimmunization 323.51 due to vaccination (any) 323.51 postimmunization 323.51 postvaccinal (smallpox) 323.51 Encephalopathy (acute) 348.30 due to vaccination 323.51 Leukoencephalitis acute hemorrhagic (postinfectious) NEC 136.9 [323.61] postimmunization or postvaccinal 323.51 Leukoencephalopathy (see also Encephalitis) 323.9 acute necrotizing hemorrhagic (postinfectious) 136.9 [323.61] postimmunization or postvaccinal 323.51 Meningoencephalomyelitis (see also Meningoencephalitis) 323.9 acute NEC 048 disseminated (postinfectious) 136.9 [323.61] postimmunization or postvaccination 323.51 Myelinoclasis, perivascular, acute (postinfectious) NEC 136.9 [323.61] postimmunization or postvaccinal 323.51