ICD-10-CM · Chapter 6

G04..01 Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)

Billable

← G04 — Encephalitis, myelitis and encephalomyelitis Chapter 6: G00-G99

Excludes 1 (cannot be coded together)

post chickenpox encephalitis (B01.1)
post measles encephalitis (B05.0)
post measles myelitis (B05.1)

Last reviewed: September 2026