ICD-10-CM Code G04.01
Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.G04.01 is a billable ICD code used to specify a diagnosis of postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM). A 'billable code' is detailed enough to be used to specify a medical diagnosis.
The ICD code G040 is used to code Acute disseminated encephalomyelitis
Acute disseminated encephalomyelitis (ADEM), or acute demyelinating encephalomyelitis, is a rare autoimmune disease marked by a sudden, widespread attack of inflammation in the brain and spinal cord. As well as causing the brain and spinal cord to become inflamed, ADEM also attacks the nerves of the central nervous system and damages their myelin insulation, which, as a result, destroys the white matter. It is often triggered after the patient has received a viral infection or vaccination.
| Specialty: | Neurology |
| MeSH Codes: | D004673, D004673 |
| ICD 9 Codes: | 323.61, 323.81 |
Coding Notes for G04.01 Info for medical coders on how to properly use this ICD-10 code
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Code Type-1 Excludes:
Type-1 Excludes
Type-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here." - Post chickenpox encephalitis - instead, use code B01.1
- Post measles encephalitis - instead, use code B05.0
- Post measles myelitis - instead, use code B05.1
MS-DRG Mapping
- DRG Group #023-027 - Cranio with major dev impl or acute complex cns pdx with MCC or chemo implant.
- DRG Group #023-027 - Cranio with major dev impl or acute complex cns pdx without MCC.
- DRG Group #023-027 - Craniotomy and endovascular intracranial procedures with MCC.
- DRG Group #023-027 - Craniotomy and endovascular intracranial procedures with CC.
- DRG Group #023-027 - Craniotomy and endovascular intracranial procedures without CC or MCC.
- DRG Group #097-099 - Non-bacterial infect of nervous system except viral meningitis with MCC.
- DRG Group #097-099 - Non-bacterial infect of nervous system except viral meningitis with CC.
- DRG Group #097-099 - Non-bacterial infect of nervous system except viral meningitis without CC or MCC.
Related Concepts SNOMET-CT
- Acute disseminated encephalomyelitis following infectious disease (disorder)
- Staphylococcus epidermidis ventriculitis (disorder)
- Post-infectious encephalomyelitis (disorder)
ICD-10-CM Alphabetical Index References for 'G04.01 - Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)'
The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code G04.01. Click on any term below to browse the alphabetical index.
Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)
This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code G04.01 and a single ICD9 code, 323.61 is an approximate match for comparison and conversion purposes.
Parent Code: G04.0 - Acute disseminated encephalitis and encephalomyelitis (ADEM)