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2015 ICD-9-CM Diagnosis Code 323.9
Unspecified causes of encephalitis, myelitis, and encephalomyelitis
- 2015
- Billable Thru Sept 30/2015
- Non-Billable On/After Oct 1/2015
- ICD-9-CM 323.9 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 323.9 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).
Convert to ICD-10-CM:
323.9 converts approximately to:
- 2015/16 ICD-10-CM G04.90 Encephalitis and encephalomyelitis, unspecified
Or:
- 2015/16 ICD-10-CM G04.91 Myelitis, unspecified
Approximate Synonyms
- Acute and subacute hemorrhagic leukoencephalitis [Hurst]
- Acute ascending myelitis
- Acute hemorrhagic encephalomyelitis
- Acute hemorrhagic leukoencephalitis
- Acute necrotizing myelitis
- Acute non-infective transverse myelitis
- Acute transverse myelitis
- Acute viral transverse myelitis
- Brainstem encephalitis
- Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy
- Cerebral irritation
- Encephalitis
- Encephalitis associated with AIDS
- Encephalitis, limbic
- Encephalitis, myelitis and encephalomyelitis
- Encephalomyelitis
- Encephalomyelitis, hemorrhagic, acute
- Focal encephalitis
- Fungal infection of brain
- Granulomatous meningoencephalitis
- Granulomatous meningoencephalomyelitis
- Inflammation of spinal cord due to toxin
- Leukoencephalopathy
- Leukoencephalopathy, subcortical
- Limbic encephalitis
- Meningoencephalitis
- Meningoencephalomyelitis
- Meningomyelitis
- Myelitis
- Myelitis associated with AIDS
- Necrotizing myelitis of CNS, subacute
- Primary encephalitis
- Rasmussen syndrome
- Subacute hemorrhagic leukoencephalitis
- Subacute necrotizing myelitis
- Subacute necrotizing myelitis of CNS
- Subcortical leukoencephalopathy
- Transverse myelopathy syndrome
ICD-9-CM Volume 2 Index entries containing back-references to
323.9:
- Encephalitis (bacterial) (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) 323.9
acute - see also Encephalitis, viral
arboviral, arbovirus NEC 064![](/images/note.png)
arthropod-borne (see also Encephalitis, viral, arthropod-borne) 064![](/images/note.png)
Dawson's (inclusion body) 046.2![](/images/note.png)
due to
equine (acute) (infectious) (viral) 062.9![](/images/note.png)
following vaccination or other immunization procedure 323.51![](/images/note.png)
infectious (acute) (virus) NEC 049.8![](/images/note.png)
late effect - see Late, effect, encephalitis
lethargic (acute) (infectious) (influenzal) 049.8![](/images/note.png)
Negishi virus 064![](/images/note.png)
periaxialis (concentrica) (diffusa) 341.1![](/images/note.png)
postvaccinal (smallpox) 323.51![](/images/note.png)
progressive subcortical (Binswanger's) 290.12![](/images/note.png)
Russian
slow-acting virus NEC 046.8![](/images/note.png)
subacute sclerosing 046.2![](/images/note.png)
toxoplasmic (acquired) 130.0![](/images/note.png)
Trypanosomiasis (see also Trypanosomiasis) 086.9
[323.2
]
tuberculous (see also Tuberculosis) 013.6![](/images/note.png)
viral, virus 049.9![](/images/note.png)
![](/images/vertical.gif)
arthropod-borne NEC 064![](/images/note.png)
![](/images/vertical.gif)
slow acting NEC 046.8![](/images/note.png)
![](/images/vertical.gif)
specified type NEC 049.8![](/images/note.png)
![](/images/vertical.gif)
vaccination, prophylactic (against) V05.0![](/images/note.png)
- Encephalomyelitis (chronic) (granulomatous) (myalgic, benign) (see also Encephalitis) 323.9
abortive disseminated 049.8![](/images/note.png)
acute disseminated (ADEM) (postinfectious) 136.9
[323.61
]
due to
equine (acute) (infectious) 062.9![](/images/note.png)
funicularis infectiosa 049.8![](/images/note.png)
late effect - see Late, effect, encephalitis
postvaccinal (smallpox) 323.51![](/images/note.png)
- Fever 780.60
![](/images/note.png)
brain 323.9![](/images/vertical.gif)
late effect - see category 326![](/images/note.png)
cerebral 323.9![](/images/16x16.gif)
late effect - see category 326![](/images/note.png)
- Hematomyelitis 323.9
late effect - see category 326![](/images/note.png)
- Infection, infected, infective (opportunistic) 136.9
![](/images/note.png)
brain (see also Encephalitis) 323.9![](/images/vertical.gif)
late effect - see category 326![](/images/note.png)
![](/images/vertical.gif)
membranes - (see also Meningitis) 322.9![](/images/note.png)
![](/images/vertical.gif)
septic 324.0![](/images/note.png)
![](/images/vertical.gif)
![](/images/16x16.gif)
late effect - see category 326![](/images/note.png)
![](/images/vertical.gif)
![](/images/16x16.gif)
meninges (see also Meningitis) 320.9![](/images/note.png)
spinal cord NEC (see also Encephalitis) 323.9![](/images/16x16.gif)
abscess 324.1![](/images/note.png)
![](/images/16x16.gif)
![](/images/vertical.gif)
late effect - see category 326![](/images/note.png)
![](/images/16x16.gif)
late effect - see category 326![](/images/note.png)
![](/images/16x16.gif)
meninges - see Meningitis![](/images/16x16.gif)
streptococcal 320.2![](/images/note.png)
- Inflammation, inflamed, inflammatory (with exudation)
brain (see also Encephalitis) 323.9![](/images/vertical.gif)
late effect - see category 326![](/images/note.png)
![](/images/vertical.gif)
membrane - see Meningitis
cerebral (see also Encephalitis) 323.9![](/images/vertical.gif)
late effect - see category 326![](/images/note.png)
![](/images/vertical.gif)
membrane - see Meningitis
spinal![](/images/16x16.gif)
cord (see also Encephalitis) 323.9![](/images/16x16.gif)
![](/images/vertical.gif)
late effect - see category 326![](/images/note.png)
![](/images/16x16.gif)
membrane - see Meningitis![](/images/16x16.gif)
nerve - see Disorder, nerve
- Leukoencephalopathy (see also Encephalitis) 323.9
acute necrotizing hemorrhagic (postinfectious) 136.9
[323.61
]![](/images/vertical.gif)
postimmunization or postvaccinal 323.51![](/images/note.png)
multifocal (progressive) 046.3![](/images/note.png)
progressive multifocal 046.3![](/images/note.png)
reversible, posterior 348.5![](/images/note.png)
- Meningoencephalitis (see also Encephalitis) 323.9
bacterial, purulent, pyogenic, or septic - see Meningitis
due to
infectious (acute) 048![](/images/note.png)
late effect - see category 326![](/images/note.png)
lymphocytic (serous) 049.0![](/images/note.png)
toxoplasmosis (acquired) 130.0![](/images/note.png)
tuberculous (see also Tuberculosis, meninges) 013.0![](/images/note.png)
- Meningoencephalomyelitis (see also Meningoencephalitis) 323.9
due to
late effect - see category 326![](/images/note.png)
- Meningomyelitis (see also Meningoencephalitis) 323.9
blastomycotic NEC (see also Blastomycosis) 116.0
[323.41
]
due to
late effect - see category 326![](/images/note.png)
tuberculous (see also Tuberculosis, meninges) 013.0![](/images/note.png)
- Mesencephalitis (see also Encephalitis) 323.9
late effect - see category 326![](/images/note.png)
- Myelitis (ascending) (cerebellar) (childhood) (chronic) (descending) (diffuse) (disseminated) (pressure) (progressive) (spinal cord) (subacute) (see also Encephalitis) 323.9
due to
late effect - see category 326![](/images/note.png)
syphilitic (transverse) 094.89![](/images/note.png)
tuberculous (see also Tuberculosis) 013.6![](/images/note.png)
- Parencephalitis (see also Encephalitis) 323.9
late effect - see category 326![](/images/note.png)
- Phrenitis 323.9
- Syringomyelitis 323.9
late effect - see category 326![](/images/note.png)