G04.2 – Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified
ICD-10-CM 2027 diagnosis code · Inflammatory diseases of the central nervous system
- Code
G04.2(claims format:G042)- Description
- Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified
- Short description
- Bacterial meningoencephalitis and meningomyelitis, NEC
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 6. Diseases of the nervous system (G00-G99)
- Block
- G00-G09 Inflammatory diseases of the central nervous system
- Parent codes
- G04
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
G04 – Encephalitis, myelitis and encephalomyelitis
- acute ascending myelitis
- meningoencephalitis
- meningomyelitis
- encephalopathy NOS (G93.40)
Index terms for G04.2
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in G04
- G04.0 – Acute disseminated encephalitis and encephalomyelitis (ADEM)Header
- G04.1 – Tropical spastic paraplegiaBillable
- G04.3 – Acute necrotizing hemorrhagic encephalopathyHeader
- G04.8 – Other encephalitis, myelitis and encephalomyelitisHeader
- G04.9 – Encephalitis, myelitis and encephalomyelitis, unspecifiedHeader
Frequently asked questions
What is ICD-10 code G04.2?
G04.2 is the ICD-10-CM code for bacterial meningoencephalitis and meningomyelitis, not elsewhere classified, in the block G00-G09 (Inflammatory diseases of the central nervous system).
Is G04.2 a billable code?
Yes. G04.2 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does G04.2 belong to?
It belongs to category G04 – Encephalitis, myelitis and encephalomyelitis.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.