323.51 ENCEPH/MYEL FOLWG IMMUNE

Home > ICD-9 List > Diseases of the nervous system > Inflammatory diseases of the central nervous system (320-327) > 323 Encephalitis, myelitis, and encephalomyelitis > 323.51

Code Information

Diagnosis Code: 323.51

Short Description: Enceph/myel folwg immune

Long Description: Encephalitis and encephalomyelitis following immunization procedures

Code Classification:

Diseases of the nervous system (320–359)
- Inflammatory diseases of the central nervous system (320-327)
  - 323 Encephalitis, myelitis, and encephalomyelitis
    - 323.51 Enceph/myel folwg immune

Code Version: 2015 ICD-9-CM

Synonyms

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-bacillus Calmette-Guerin vaccination encephalitis
Post-immunization encephalitis
Postvaccinal encephalomyelitis

References to Index of Diseases and Injuries

The code 323.51 has the following ICD-9-CM references to the Index of Diseases and Injuries

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) (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

Crosswalk Information

The code 323.51 converts into the following ICD-10 code(s):

ICD-9 Code		ICD-10 Code	ICD-10 Description
323.51		G04.02	Postimmun ac dissem encphlts, myelitis and encephalomyelitis
323.51		G04.32	Postimmun acute necrotizing hemorrhagic encephalopathy

This ICD-9 to ICD-10 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-9 Code	ICD-9 Description
323.01	Encephalitis and encephalomyelitis in viral diseases classified elsewhere
323.02	Myelitis in viral diseases classified elsewhere
323.1	Encephalitis, myelitis, and encephalomyelitis in rickettsial diseases classified elsewhere
323.2	Encephalitis, myelitis, and encephalomyelitis in protozoal diseases classified elsewhere
323.41	Other encephalitis and encephalomyelitis due to other infections classified elsewhere
323.42	Other myelitis due to other infections classified elsewhere
323.52	Myelitis following immunization procedures
323.61	Infectious acute disseminated encephalomyelitis (ADEM)
323.62	Other postinfectious encephalitis and encephalomyelitis
323.63	Postinfectious myelitis
323.71	Toxic encephalitis and encephalomyelitis
323.72	Toxic myelitis
323.81	Other causes of encephalitis and encephalomyelitis
323.82	Other causes of myelitis
323.9	Unspecified causes of encephalitis, myelitis, and encephalomyelitis

This page was last updated on: 10/1/2014

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