ICD-9-CM

Includes:

acute disseminated encephalomyelitis

meningoencephalitis, except bacterial

meningomyelitis, except bacterial

myelitis:

ascending

transverse

Excludes:

acute transverse myelitis NOS (341.20)

acute transverse myelitis in conditions classified elsewhere (341.21)

bacterial:

meningoencephalitis (320.0-320.9)

meningomyelitis (320.0-320.9)

idiopathic transverse myelitis (341.22)

323.4 Other encephalitis, myelitis, and encephalomyelitis due to other infections classified elsewhere Code first underlying disease
323.41: Other encephalitis and encephalomyelitis due to other infections classified elsewhere Excludes: encephalitis (in): meningococcal (036.1) syphilis: NOS (094.81) congenital (090.41) toxoplasmosis (130.0) tuberculosis (013.6) meningoencephalitis due to free-living ameba [Naegleria] (136.29)
323.42: Other myelitis due to other infections classified elsewhere Excludes: myelitis (in): syphilis (094.89) tuberculosis (013.6)

323.4 Other encephalitis, myelitis, and encephalomyelitis due to other infections classified elsewhere

Code first underlying disease

Excludes:

encephalitis (in):

meningococcal (036.1)

syphilis:

NOS (094.81)

congenital (090.41)

toxoplasmosis (130.0)

tuberculosis (013.6)

meningoencephalitis due to free-living ameba [Naegleria] (136.29)

Excludes:

myelitis (in):

syphilis (094.89)

tuberculosis (013.6)

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