G04.0
Non-billableAcute disseminated encephalitis and encephalomyelitis (ADEM)
Acute disseminated encephalitis and encephalomyelitis (ADEM)
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Includes
Conditions included under this code
- acute ascending myelitis
- meningoencephalitis
- meningomyelitis
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- 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)
Child Codes (3)
Also Known As / Clinical Terms
Frequently Asked Questions
What is the ICD-10 code for acute disseminated encephalitis and encephalomyelitis (adem)?
The ICD-10-CM code for acute disseminated encephalitis and encephalomyelitis (adem) is G04.0. The full clinical description is "Acute disseminated encephalitis and encephalomyelitis (ADEM)". G04.0 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code G04.0 mean?
ICD-10-CM code G04.0 represents "Acute disseminated encephalitis and encephalomyelitis (ADEM)". It is classified under Chapter 6: Diseases of the Nervous System and is a non-billable header code. Use a more specific child code for billing purposes.
Is G04.0 a billable code?
No, G04.0 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 3 child codes under G04.0.
What chapter is G04.0 in?
G04.0 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What codes cannot be used with G04.0?
G04.0 has Excludes1 notes indicating codes that cannot be used together with it, including: encephalopathy NOS (G93.40); acute necrotizing hemorrhagic encephalopathy (G04.3-); other noninfectious acute disseminated encephalomyelitis (noninfectious ADEM) (G04.81).
What are the subcategories under G04.0?
G04.0 has 3 child codes, including: G04.00 (Acute disseminated encephalitis and encephalomyelitis, unsp), G04.01 (Postinfect acute dissem encephalitis and encephalomyelitis), G04.02 (Postimmun ac dissem encphlts, myelitis and encephalomyelitis).
What are the UMLS CUIs for G04.0?
G04.0 is linked to 1 UMLS Concept Unique Identifier: C2875014. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.