Emergency: 119
AMDA-IMIC

G03 Meningitis due to other and unspecified causes

Category / Non-billable header 5 subcodes

Block: Inflammatory diseases of the central nervous system (G00-G09)

Includes

  • arachnoiditis NOS
  • leptomeningitis NOS
  • meningitis NOS
  • pachymeningitis NOS

Excludes 1 (cannot be coded together)

  • meningoencephalitis (G04.-)
  • meningomyelitis (G04.-)

Subcodes

Each subcode links to a detail page with full clinical annotations.

Code Description Billable
G03..0 Nonpyogenic meningitis Yes
G03..1 Chronic meningitis Yes
G03..2 Benign recurrent meningitis [Mollaret] Yes
G03..8 Meningitis due to other specified causes Yes
G03..9 Meningitis, unspecified Yes

Plain-language term for this code

The following entry in the US Medical Glossary corresponds to ICD-10-CM category G03:

Last reviewed: September 2026