Other encephalitis and encephalomyelitis
Billable / specific
G04.81 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Inclusion terms
Applicable to
- Noninfectious acute disseminated encephalomyelitis (noninfectious ADEM)
Includes (from G04)
- acute ascending myelitis
- meningoencephalitis
- meningomyelitis
Excludes1
Not coded here — never report together with this code.
Excludes2
Not included here — may be reported together when both conditions exist.
- certain conditions originating in the perinatal period (P04-P96) (from G04)
- certain infectious and parasitic diseases (A00-B99) (from G04)
- complications of pregnancy, childbirth and the puerperium (O00-O9A) (from G04)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from G04)
- endocrine, nutritional and metabolic diseases (E00-E88) (from G04)
- injury, poisoning and certain other consequences of external causes (S00-T88) (from G04)
- neoplasms (C00-D49) (from G04)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from G04)
- acute transverse myelitis (G37.3) (from G04)
- alcoholic encephalopathy (G31.2) (from G04)
- multiple sclerosis (G35-) (from G04)
- myalgic encephalomyelitis (G93.32) (from G04)
- subacute necrotizing myelitis (G37.4) (from G04)
- toxic encephalitis (G92.8) (from G04)
- toxic encephalopathy (G92.8) (from G04)
Code also
An additional code may be needed.
Also known as
- Noninfectious acute disseminated encephalomyelitis (noninfectious ADEM)
- Encephalitis, acute, disseminated, noninfectious
- Encephalitis, Rasmussen
- Encephalitis, specified NEC
- Encephalitis, suppurative
- Encephalomyelitis, acute disseminated, noninfectious
- Encephalomyelitis, specified NEC
- Leukoencephalitis
- Meningoencephalitis, specified organism NEC
- Rasmussen encephalitis
- Syndrome, Rasmussen
Parent code
- G04.8Other encephalitis, myelitis and encephalomyelitisHeader