2019 ICD-10-CM Diagnosis Code G02

Meningitis in other infectious and parasitic diseases classified elsewhere

ICD-10-CM Coding Rules
Code First
Code First Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • underlying disease, such as:
  • African trypanosomiasis (
    ICD-10-CM Diagnosis Code B56
    • B56 African trypanosomiasis
      • B56.0 Gambiense trypanosomiasis
      • B56.1 Rhodesiense trypanosomiasis
      • B56.9 African trypanosomiasis, unspecified
  • poliovirus infection (
    ICD-10-CM Diagnosis Code A80
    • A80 Acute poliomyelitis
      • A80.0 Acute paralytic poliomyelitis, vaccine-associ...
      • A80.1 Acute paralytic poliomyelitis, wild virus, im...
      • A80.2 Acute paralytic poliomyelitis, wild virus, in...
      • A80.3 Acute paralytic poliomyelitis, other and unsp...
        • A80.30 Acute paralytic poliomyelitis, unspecified
        • A80.39 Other acute paralytic poliomyelitis
      • A80.4 Acute nonparalytic poliomyelitis
      • A80.9 Acute poliomyelitis, unspecified
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as G02. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • candidal meningitis (
    ICD-10-CM Diagnosis Code B37.5

    Candidal meningitis

      2016 2017 2018 2019 Billable/Specific Code
  • coccidioidomycosis meningitis (
    ICD-10-CM Diagnosis Code B38.4

    Coccidioidomycosis meningitis

      2016 2017 2018 2019 Billable/Specific Code
  • cryptococcal meningitis (
    ICD-10-CM Diagnosis Code B45.1

    Cerebral cryptococcosis

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Cryptococcal meningitis
    • Cryptococcosis meningocerebralis
  • herpesviral [herpes simplex] meningitis (
    ICD-10-CM Diagnosis Code B00.3

    Herpesviral meningitis

      2016 2017 2018 2019 Billable/Specific Code
  • infectious mononucleosis complicated by meningitis (
    ICD-10-CM Diagnosis Code B27
    • B27 Infectious mononucleosis
      • B27.0 Gammaherpesviral mononucleosis
        • B27.00 Gammaherpesviral mononucleosis without compli...
        • B27.01 Gammaherpesviral mononucleosis with polyneuro...
        • B27.02 Gammaherpesviral mononucleosis with meningiti...
        • B27.09 Gammaherpesviral mononucleosis with other com...
      • B27.1 Cytomegaloviral mononucleosis
        • B27.10 Cytomegaloviral mononucleosis without complic...
        • B27.11 Cytomegaloviral mononucleosis with polyneurop...
        • B27.12 Cytomegaloviral mononucleosis with meningitis...
        • B27.19 Cytomegaloviral mononucleosis with other comp...
      • B27.8 Other infectious mononucleosis
        • B27.80 Other infectious mononucleosis without compli...
        • B27.81 Other infectious mononucleosis with polyneuro...
        • B27.82 Other infectious mononucleosis with meningiti...
        • B27.89 Other infectious mononucleosis with other com...
      • B27.9 Infectious mononucleosis, unspecified
        • B27.90 Infectious mononucleosis, unspecified without...
        • B27.91 Infectious mononucleosis, unspecified with po...
        • B27.92 Infectious mononucleosis, unspecified with me...
        • B27.99 Infectious mononucleosis, unspecified with ot...
    with fourth character 2)
  • measles complicated by meningitis (
    ICD-10-CM Diagnosis Code B05.1

    Measles complicated by meningitis

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Postmeasles meningitis
  • meningoencephalitis and meningomyelitis in other infectious and parasitic diseases classified elsewhere (
    ICD-10-CM Diagnosis Code G05

    Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Code First
    • underlying disease, such as:
    • human immunodeficiency virus [HIV] disease (B20)
    • poliovirus (A80.-)
    • suppurative otitis media (H66.01-H66.4)
    • trichinellosis (B75)
    Type 1 Excludes
    • adenoviral encephalitis, myelitis and encephalomyelitis (A85.1)
    • congenital toxoplasmosis encephalitis, myelitis and encephalomyelitis (P37.1)
    • cytomegaloviral encephalitis, myelitis and encephalomyelitis (B25.8)
    • encephalitis, myelitis and encephalomyelitis (in) measles (B05.0)
    • encephalitis, myelitis and encephalomyelitis (in) systemic lupus erythematosus (M32.19)
    • enteroviral encephalitis, myelitis and encephalomyelitis (A85.0)
    • eosinophilic meningoencephalitis (B83.2)
    • herpesviral [herpes simplex] encephalitis, myelitis and encephalomyelitis (B00.4)
    • listerial encephalitis, myelitis and encephalomyelitis (A32.12)
    • meningococcal encephalitis, myelitis and encephalomyelitis (A39.81)
    • mumps encephalitis, myelitis and encephalomyelitis (B26.2)
    • postchickenpox encephalitis, myelitis and encephalomyelitis (B01.1-)
    • rubella encephalitis, myelitis and encephalomyelitis (B06.01)
    • toxoplasmosis encephalitis, myelitis and encephalomyelitis (B58.2)
    • zoster encephalitis, myelitis and encephalomyelitis (B02.0)
  • mumps meningitis (
    ICD-10-CM Diagnosis Code B26.1

    Mumps meningitis

      2016 2017 2018 2019 Billable/Specific Code
  • rubella meningitis (
    ICD-10-CM Diagnosis Code B06.02

    Rubella meningitis

      2016 2017 2018 2019 Billable/Specific Code
  • varicella [chickenpox] meningitis (
    ICD-10-CM Diagnosis Code B01.0

    Varicella meningitis

      2016 2017 2018 2019 Billable/Specific Code
  • zoster meningitis (
    ICD-10-CM Diagnosis Code B02.1

    Zoster meningitis

      2016 2017 2018 2019 Billable/Specific Code
The following code(s) above G02 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to G02:
  • G00-G99
    2019 ICD-10-CM Range G00-G99

    Diseases of the nervous system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the nervous system
Approximate Synonyms ICD-10-CM G02 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):

Convert G02 to ICD-9-CM

Code History
Code annotations containing back-references to G02:
ICD-10-CM Codes Adjacent To G02
F98.9 Unspecified behavioral and emotional disorders with onset usually occurring in childhood and adolescence
F99 Mental disorder, not otherwise specified
G00 Bacterial meningitis, not elsewhere classified
G00.0 Hemophilus meningitis
G00.1 Pneumococcal meningitis
G00.2 Streptococcal meningitis
G00.3 Staphylococcal meningitis
G00.8 Other bacterial meningitis
G00.9 Bacterial meningitis, unspecified
G01 Meningitis in bacterial diseases classified elsewhere
G02 Meningitis in other infectious and parasitic diseases classified elsewhere
G03 Meningitis due to other and unspecified causes
G03.0 Nonpyogenic meningitis
G03.1 Chronic meningitis
G03.2 Benign recurrent meningitis [Mollaret]
G03.8 Meningitis due to other specified causes
G03.9 Meningitis, unspecified
G04 Encephalitis, myelitis and encephalomyelitis
G04.0 Acute disseminated encephalitis and encephalomyelitis (ADEM)
G04.00 Acute disseminated encephalitis and encephalomyelitis, unspecified
G04.01 Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.