Encephalitis, myelitis and encephalomyelitis - G04
This notation helps users understand the scope of a code G04 category and provides additional information about the conditions or terms that fall under that category.
Category Includes:
- acute ascending myelitis
- meningoencephalitis
- meningomyelitis
Excludes1: It indicates that the conditions described by two codes cannot occur together in the same patient. These codes are mutually exclusive.
Type 1 Excludes:
- encephalopathy NOS (G93.40)
Excludes2: This note means that the conditions described by two codes are not usually associated with each other but can sometimes occur together.
Type 2 Excludes:
- acute transverse myelitis (G37.3-)
- alcoholic encephalopathy (G31.2)
- multiple sclerosis (G35)
- myalgic encephalomyelitis (G93.32)
- subacute necrotizing myelitis (G37.4)
- toxic encephalitis (G92.8)
- toxic encephalopathy (G92.8)
These ranges represents subcategories of Encephalitis, myelitis and encephalomyelitis. The "G04" signifies that these are the diseases within this broad category.
Codes:
- G04.0 - Acute disseminated encephalitis and encephalomyelitis (ADEM)
- G04.00 - Acute disseminated encephalitis and encephalomyelitis, unspecified
- G04.01 - Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)
- G04.02 - Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis
- G04.1 - Tropical spastic paraplegia
- G04.2 - Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified
- G04.3 - Acute necrotizing hemorrhagic encephalopathy
- G04.30 - Acute necrotizing hemorrhagic encephalopathy, unspecified
- G04.31 - Postinfectious acute necrotizing hemorrhagic encephalopathy
- G04.32 - Postimmunization acute necrotizing hemorrhagic encephalopathy
- G04.39 - Other acute necrotizing hemorrhagic encephalopathy
- G04.8 - Other encephalitis, myelitis and encephalomyelitis
- G04.81 - Other encephalitis and encephalomyelitis
- G04.82 - Acute flaccid myelitis
- G04.89 - Other myelitis
- G04.9 - Encephalitis, myelitis and encephalomyelitis, unspecified
- G04.90 - Encephalitis and encephalomyelitis, unspecified
- G04.91 - Myelitis, unspecified