G03.9

Billable
ChapterG00–G99
Ranksubcategory
Official Description

Meningitis, unspecified

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 6: Diseases of the Nervous System (G00-G99).

Instructional Notes

Includes
  • Arachnoiditis (spinal) NOS
General instructions are available for the parent sections:
View CH6 NotesView G03 Notes

Clinical Hierarchy

CH6Diseases of the nervous system (G00-G99)
G00-G09Inflammatory diseases of the central nervous system (G00-G09)
G03Meningitis due to other and unspecified causes
G03.9Meningitis, unspecified

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to G03.9:

categoryG03
Meningitis due to other and unspecified causes
View context instructions
chapterCH6
Diseases of the nervous system (G00-G99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to G03.9. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

1 raw paths
Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)1 unique routes
Direct index entry→G03.9

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 097
Non-Bacterial Infection of Nervous System Except Viral Meningitis with MCC
DRG 098
Non-Bacterial Infection of Nervous System Except Viral Meningitis with CC
DRG 099
Non-Bacterial Infection of Nervous System Except Viral Meningitis without CC/MCC
DRG 791
Prematurity with Major Problems
DRG 793
Full Term Neonate with Major Problems

Cross Reference

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