G04.8 Other encephalitis, myelitis and encephalomyelitis

Non-billable header with 3 child codes.

Code also

• any associated seizure (G40.-, R56.9)

Applies from G04 Encephalitis, myelitis and encephalomyelitis

Includes

• acute ascending myelitis
• meningoencephalitis
• meningomyelitis

Excludes1 (never code together)

• encephalopathy NOS (G93.40)

Excludes2 (not included here)

• 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)

Codes under G04.8

• G04.81 Other encephalitis and encephalomyelitis
• G04.82 Acute flaccid myelitis
• G04.89 Other myelitis

Code annotations containing back-references to G04.8

Back-references to G04

• Type 1 Excludes: G03 Meningitis due to other and unspecified causes ("meningoencephalitis (G04.-)")
• Type 1 Excludes: G03 Meningitis due to other and unspecified causes ("meningomyelitis (G04.-)")
• Type 2 Excludes: G95 Other and unspecified diseases of spinal cord ("myelitis (G04.-)")

Nearby codes

• 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 (this code)
• 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