2011 ICD-9-CM Diagnosis Code 323.51 : Encephalitis and encephalomyelitis following immunization procedures

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2011 ICD-9-CM Diagnosis Code 323.51

Encephalitis and encephalomyelitis following immunization procedures

Short description: Enceph/myel folwg immune.
ICD-9-CM 323.51 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 323.51 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 2011 version of ICD-9-CM 323.51.
More recent version(s) of ICD-9-CM 323.51: 2012 2013 2014 2015.

Convert to ICD-10-CM: 323.51 converts approximately to:

2015/16 ICD-10-CM G04.02 Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis
Or:
2015/16 ICD-10-CM G04.32 Postimmunization acute necrotizing hemorrhagic encephalopathy

Approximate Synonyms

Acute postimmunization necrotizing hemorrhagic encephalopathy
Encephalitis following immunization
Encephalitis, late effect of immunization
Post BCG vaccination encephalitis
Post cholera vaccination encephalitis
Post diphtheria vaccination encephalitis
Post hepatitis A vaccination encephalitis
Post hepatitis B vaccination encephalitis
Post influenza vaccination encephalitis
Post measles vaccination encephalitis
Post mixed vaccination encephalitis
Post mumps vaccination encephalitis
Post paratyphoid vaccination encephalitis
Post pertussis vaccination encephalitis
Post plague vaccination encephalitis
Post polio vaccination encephalitis
Post rabies vaccination encephalitis
Post rubella vaccination encephalitis
Post smallpox vaccination encephalitis
Post tetanus vaccination encephalitis
Post typhoid vaccination encephalitis
Post typhus vaccination encephalitis
Post yellow fever vaccination encephalitis
Post-immunization encephalitis
Postvaccinal encephalomyelitis

Applies To

Encephalitis postimmunization or postvaccinal
Encephalomyelitis postimmunization or postvaccinal

ICD-9-CM Volume 2 Index entries containing back-references to 323.51:

Complications
- vaccination 999.9
  - anaphylaxis NEC 999.4
  - cellulitis 999.39
  - encephalitis or encephalomyelitis 323.51
  - hepatitis (serum) (type B) (within 8 months after administration) - see Hepatitis, viral
  - infection (general) (local) NEC 999.39
  - jaundice (serum) (within 8 months after administration) - see Hepatitis, viral
  - meningitis 997.09 [321.8]
  - myelitis 323.52
  - protein sickness 999.5
  - reaction (allergic) 999.5
    - Herxheimer's 995.0
    - serum 999.5
  - sepsis 999.39
  - 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
    - localized 999.39
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
  - inclusional 049.8
  - inclusion body 049.8
  - necrotizing 049.8
- due to
  - actinomycosis 039.8 [323.41]
  - cat-scratch disease 078.3 [323.01]
  - human herpesvirus 6 058.21
  - human herpesvirus 7 058.29
  - human herpesvirus NEC 058.29
  - infection classified elsewhere 136.9 [323.41]
  - infectious mononucleosis 075 [323.01]
  - malaria (see also Malaria) 084.6 [323.2]
  - negishi virus 064
  - ornithosis 073.7 [323.01]
  - prophylactic inoculation against smallpox 323.51
  - rickettsiosis (see also Rickettsiosis) 083.9 [323.1]
  - rubella 056.01
  - toxoplasmosis (acquired) 130.0
    - congenital (active) 771.2 [323.41]
  - typhus (fever) (see also Typhus) 081.9 [323.1]
  - vaccination (smallpox) 323.51
- following vaccination or other immunization procedure 323.51
- postimmunization 323.51
- postvaccinal (smallpox) 323.51
Encephalomyelitis (chronic) (granulomatous) (myalgic, benign) (see also Encephalitis) 323.9
- acute disseminated (ADEM) (postinfectious) 136.9 [323.61]
  - infectious 136.9 [323.61]
  - noninfectious 323.81
  - postimmunization 323.51
- due to
  - cat-scratch disease 078.3 [323.01]
  - infectious mononucleosis 075 [323.01]
  - ornithosis 073.7 [323.01]
  - vaccination (any) 323.51
- postimmunization 323.51
- postvaccinal (smallpox) 323.51
Encephalopathy (acute) 348.30
- due to
  - birth injury (intracranial) 767.8
  - dialysis 294.8
    - transient 293.9
  - drugs - (see also Table of Drugs and Chemicals) 348.39
  - hyperinsulinism - see Hyperinsulinism
  - influenza (virus) (see also Influenza) 487.8
    - identified
      - avian 488.09
      - novel H1N1 488.19
  - 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 323.51
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

323.5

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323.52

ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 323.51 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 2011 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.

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