G00.9

Bacterial meningitis, unspecified

Billable / specific

G00.9 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Applicable to

  • Meningitis due to gram-negative bacteria, unspecified
  • Purulent meningitis NOS
  • Pyogenic meningitis NOS
  • Suppurative meningitis NOS

Includes (from G00)

  • bacterial arachnoiditis
  • bacterial leptomeningitis
  • bacterial meningitis
  • bacterial pachymeningitis

Excludes1

Not coded here — never report together with this code.

  • bacterial meningoencephalitis (G04.2) (from G00)
  • bacterial meningomyelitis (G04.2) (from G00)

Excludes2

Not included here — may be reported together when both conditions exist.

  • certain conditions originating in the perinatal period (P04-P96) (from G00)
  • certain infectious and parasitic diseases (A00-B99) (from G00)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A) (from G00)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from G00)
  • endocrine, nutritional and metabolic diseases (E00-E88) (from G00)
  • injury, poisoning and certain other consequences of external causes (S00-T88) (from G00)
  • neoplasms (C00-D49) (from G00)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from G00)

Also known as

  • Meningitis due to gram-negative bacteria, unspecified
  • Purulent meningitis NOS
  • Pyogenic meningitis NOS
  • Suppurative meningitis NOS
  • Meningitis, bacterial
  • Meningitis, bacterial, gram-negative
  • Meningitis, fibrinopurulent
  • Meningitis, gram-negative cocci
  • Meningitis, gram-positive cocci
  • Meningitis, infectious
  • Meningitis, purulent
  • Meningitis, pyogenic
  • Meningitis, septic
  • Meningitis, suppurative

Parent code

  • G00Bacterial meningitis, not elsewhere classifiedHeader

Related codes

  • G00.0Hemophilus meningitisBillable
  • G00.1Pneumococcal meningitisBillable
  • G00.2Streptococcal meningitisBillable
  • G00.3Staphylococcal meningitisBillable
  • G00.8Other bacterial meningitisBillable

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