G00 Bacterial meningitis, not elsewhere classified

Incl.:

arachnoiditis leptomeningitis meningitis pachymeningitis

bacterial

Excl.:

bacterial:

• meningoencephalitis (G04.2)
• meningomyelitis (G04.2)

G00.0 Haemophilus meningitis

Incl.:

Meningitis due to Haemophilus influenzae

G00.1 Pneumococcal meningitis

G00.2 Streptococcal meningitis

NCCS

DCS.XVI.5

G00.3 Staphylococcal meningitis

G00.8 Other bacterial meningitis

Incl.:

Meningitis due to:

• Escherichia coli
• Friedländer bacillus
• Klebsiella

G00.9 Bacterial meningitis, unspecified

Incl.:

Meningitis:

• purulent NOS
• pyogenic NOS
• suppurative NOS

G01* Meningitis in bacterial diseases classified elsewhere

Incl.:

Meningitis (in):

• anthrax (A22.8†)
• gonococcal (A54.8†)
• leptospirosis (A27.-†)
• listerial (A32.1†)
• Lyme disease (A69.2†)
• meningococcal (A39.0†)
• neurosyphilis (A52.1†)
• salmonella infection (A02.2†)
• syphilis:
  • —  congenital (A50.4†)
  • —  secondary (A51.4†)
• tuberculous (A17.0†)
• typhoid fever (A01.0†)

Excl.:

meningoencephalitis and meningomyelitis in bacterial diseases classified elsewhere ( G05.0*)

G02* Meningitis in other infectious and parasitic diseases classified elsewhere

Excl.:

meningoencephalitis and meningomyelitis in other infectious and parasitic diseases classified elsewhere ( G05.1-G05.2*)

G02.0* Meningitis in viral diseases classified elsewhere

Incl.:

Meningitis (due to):

• adenoviral (A87.1†)
• enteroviral (A87.0†)
• herpesviral [herpes simplex] (B00.3†)
• infectious mononucleosis (B27.-†)
• measles (B05.1†)
• mumps (B26.1†)
• rubella (B06.0†)
• varicella [chickenpox] (B01.0†)
• zoster (B02.1†)

G02.1* Meningitis in mycoses

Incl.:

Meningitis (in):

• candidal (B37.5†)
• coccidioidomycosis (B38.4†)
• cryptococcal (B45.1†)

G02.8* Meningitis in other specified infectious and parasitic diseases classified elsewhere

Incl.:

Meningitis due to:

• African trypanosomiasis (B56.-†)
• Chagas disease (chronic) (B57.4†)

G03 Meningitis due to other and unspecified causes

Incl.:

arachnoiditis leptomeningitis meningitis pachymeningitis

due to other and unspecified causes

Excl.:

meningoencephalitis ( G04.-)

meningomyelitis ( G04.-)

G03.0 Nonpyogenic meningitis

Incl.:

Nonbacterial meningitis

G03.1 Chronic meningitis

G03.2 Benign recurrent meningitis [Mollaret]

G03.8 Meningitis due to other specified causes

G03.9 Meningitis, unspecified

Incl.:

Arachnoiditis (spinal) NOS

G04 Encephalitis, myelitis and encephalomyelitis

Incl.:

acute ascending myelitis

meningoencephalitis

meningomyelitis

Excl.:

benign myalgic encephalomyelitis ( G93.3)

encephalopathy:

• NOS (G93.4)
• alcoholic (G31.2)
• toxic (G92)

multiple sclerosis ( G35)

myelitis:

• acute transverse (G37.3)
• subacute necrotizing (G37.4)

G04.0 Acute disseminated encephalitis

Incl.:

Encephalitis Encephalomyelitis

postimmunization

Coding-Hint

Use additional external cause code (Chapter XX), if desired, to identify vaccine.

G04.1 Tropical spastic paraplegia

G04.2 Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified

G04.8 Other encephalitis, myelitis and encephalomyelitis

Incl.:

Postinfectious encephalitis and encephalomyelitis NOS

Coding-Hint

Use additional code, if desired, to identify any associated epileptic seizures (G40.-).

G04.9 Encephalitis, myelitis and encephalomyelitis, unspecified

Incl.:

Ventriculitis (cerebral) NOS

G05* Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere

Incl.:

meningoencephalitis and meningomyelitis in diseases classified elsewhere

G05.0* Encephalitis, myelitis and encephalomyelitis in bacterial diseases classified elsewhere

Incl.:

Encephalitis, myelitis or encephalomyelitis (in):

• listerial (A32.1†)
• meningococcal (A39.8†)
• syphilis:
  • —  congenital (A50.4†)
  • —  late (A52.1†)
• tuberculous (A17.8†)

G05.1* Encephalitis, myelitis and encephalomyelitis in viral diseases classified elsewhere

Incl.:

Encephalitis, myelitis or encephalomyelitis (in):

• adenoviral (A85.1†)
• cytomegaloviral (B25.8†)
• enteroviral (A85.0†)
• herpesviral [herpes simplex] (B00.4†)
• influenza:
  • —  seasonal virus identified (J10.8†)
  • —  virus not identified (J11.8†)
  • —  zoonotic or pandemic influenza virus identified (J09†)
• measles (B05.0†)
• mumps (B26.2†)
• postchickenpox (B01.1†)
• rubella (B06.0†)
• zoster (B02.0†)

G05.2* Encephalitis, myelitis and encephalomyelitis in other infectious and parasitic diseases classified elsewhere

Incl.:

Encephalitis, myelitis or encephalomyelitis in:

• African trypanosomiasis (B56.-†)
• Chagas disease (chronic) (B57.4†)
• naegleriasis (B60.2†)
• toxoplasmosis (B58.2†)

Eosinophilic meningoencephalitis ( B83.2†)

G05.8* Encephalitis, myelitis and encephalomyelitis in other diseases classified elsewhere

Incl.:

Encephalitis in systemic lupus erythematosus ( M32.1†)

G06 Intracranial and intraspinal abscess and granuloma

Coding-Hint

Use additional code (B95-B98), if desired, to identify infectious agent.

G06.0 Intracranial abscess and granuloma

Incl.:

Abscess (embolic)(of):

• brain [any part]
• cerebellar
• cerebral
• otogenic

Intracranial abscess or granuloma:

• epidural
• extradural
• subdural

G06.1 Intraspinal abscess and granuloma

Incl.:

Abscess (embolic) of spinal cord [any part]

Intraspinal abscess or granuloma:

• epidural
• extradural
• subdural

G06.2 Extradural and subdural abscess, unspecified

G07* Intracranial and intraspinal abscess and granuloma in diseases classified elsewhere

Incl.:

Abscess of brain:

• amoebic (A06.6†)
• gonococcal (A54.8†)
• tuberculous (A17.8†)

Schistosomiasis granuloma of brain ( B65.-†)

Tuberculoma of:

• brain (A17.8†)
• meninges (A17.1†)

G08 Intracranial and intraspinal phlebitis and thrombophlebitis

Incl.:

Septic: embolism endophlebitis phlebitis thrombophlebitis thrombosis

of intracranial or intraspinal venous sinuses and veins

Excl.:

intracranial phlebitis and thrombophlebitis:

• complicating:
  • —  abortion or ectopic or molar pregnancy (O00-O07, O08.7)
  • —  pregnancy, childbirth and the puerperium (O22.5, O87.3)
• of nonpyogenic origin (I67.6)

nonpyogenic intraspinal phlebitis and thrombophlebitis ( G95.1)

G09 Sequelae of inflammatory diseases of central nervous system

Note:

Category G09 is to be used to indicate conditions whose primary classification is to G00-G08 (i.e. excluding those marked with an asterisk (*)) as the cause of sequelae, themselves classifiable elsewhere. The "sequelae" include conditions specified as such or as late effects, or those present one year or more after onset of the causal condition. For use of this category reference should be made to the relevant morbidity and mortality coding rules and guidelines in Volume 2.

Not to be used for chronic inflammatory diseases of the central nervous system. Code these to current inflammatory diseases of the central nervous system.