ICD-10-CM Alphabetic Index · FY 2026 113 Entries
Meningitis in the ICD-10-CM Index ICD-10-CM
The main term Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic) carries 113 index entries pointing to 52 ICD-10-CM codes. The default entry is G03.9, the code the bare main term maps to; every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.
✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026
113
Index Entries
52
Codes Referenced
G03.9
Default Code
M
Letter
113 of 113 shown
ICD-10-CM
Index Entries Under Meningitis 113 entries · 52 codes
Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic) G03.9
abacterial G03.0
actinomycotic A42.81
adenoviral A87.1
arbovirus A87.8
aseptic (acute) G03.0
bacterial G00.9
Escherichia coli (E. coli) G00.8
Friedländer (bacillus) G00.8
gram-negative G00.9
H. influenzae G00.0
Klebsiella G00.8
pneumococcal G00.1
specified organism NEC G00.8
staphylococcal G00.3
streptococcal (acute) G00.2
benign recurrent (Mollaret) G03.2
candidal B37.5
caseous (tuberculous) A17.0
cerebrospinal A39.0
chronic NEC G03.1
clear cerebrospinal fluid NEC G03.0
coxsackievirus A87.0
cryptococcal B45.1
diplococcal (gram positive) A39.0
echovirus A87.0
enteroviral A87.0
eosinophilic B83.2
epidemic NEC A39.0
Escherichia coli (E. coli) G00.8
fibrinopurulent G00.9
specified organism NEC G00.8
Friedländer (bacillus) G00.8
gonococcal A54.81
gram-negative cocci G00.9
gram-positive cocci G00.9
Haemophilus (influenzae) G00.0
H. influenzae G00.0
in (due to)
adenovirus A87.1
African trypanosomiasis B56.9
anthrax A22.8
bacterial disease NEC A48.8
Chagas' disease (chronic) B57.41
chickenpox B01.0
coccidioidomycosis B38.4
Diplococcus pneumoniae G00.1
enterovirus A87.0
herpes (simplex) virus B00.3
zoster B02.1
infectious mononucleosis B27.92
leptospirosis A27.81
Listeria monocytogenes A32.11
Lyme disease A69.21
measles B05.1
mumps (virus) B26.1
neurosyphilis (late) A52.13
parasitic disease NEC B89
poliovirus A80.9
preventive immunization, inoculation or vaccination G03.8
rubella B06.02
Salmonella infection A02.21
specified cause NEC G03.8
Streptococcal pneumoniae G00.1
typhoid fever A01.01
varicella B01.0
viral disease NEC A87.8
whooping cough A37.90
zoster B02.1
infectious G00.9
influenzal (H. influenzae) G00.0
Klebsiella G00.8
leptospiral (aseptic) A27.81
lymphocytic (acute) (benign) (serous) A87.2
meningococcal A39.0
Mima polymorpha G00.8
Mollaret (benign recurrent) G03.2
monilial B37.5
mycotic NEC B49
Neisseria A39.0
nonbacterial G03.0
nonpyogenic NEC G03.0
ossificans G96.198
pneumococcal streptococcus pneumoniae G00.1
poliovirus A80.9
postmeasles B05.1
purulent G00.9
specified organism NEC G00.8
pyogenic G00.9
specified organism NEC G00.8
Salmonella (arizonae) (Cholerae-Suis) (enteritidis) (typhimurium) A02.21
septic G00.9
specified organism NEC G00.8
serosa circumscripta NEC G03.0
serous NEC G93.2
specified organism NEC G00.8
sporotrichosis B42.81
staphylococcal G00.3
sterile G03.0
Streptococcal (acute) G00.2
pneumoniae G00.1
suppurative G00.9
specified organism NEC G00.8
syphilitic (late) (tertiary) A52.13
acute A51.41
congenital A50.41
secondary A51.41
Torula histolytica (cryptococcal) B45.1
traumatic (complication of injury) T79.8 Non-billable
tuberculous A17.0
typhoid A01.01
viral NEC A87.9
Yersinia pestis A20.3
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Related Index Terms
Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2025 through September 30, 2026.
