2020 ICD-10-CM Diagnosis Code G03

Meningitis due to other and unspecified causes

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • G03 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM G03 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of G03 - other international versions of ICD-10 G03 may differ.
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 G03. 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.
  • meningoencephalitis (
    ICD-10-CM Diagnosis Code G04
    • G04 Encephalitis, myelitis and encephalomyelitis
      • G04.0 Acute disseminated encephalitis and encephalo...
        • G04.00 Acute disseminated encephalitis and encephalo...
        • G04.01 Postinfectious acute disseminated encephaliti...
        • G04.02 Postimmunization acute disseminated encephali...
      • G04.1 Tropical spastic paraplegia
      • G04.2 Bacterial meningoencephalitis and meningomyel...
      • G04.3 Acute necrotizing hemorrhagic encephalopathy
        • G04.30 Acute necrotizing hemorrhagic encephalopathy,...
        • G04.31 Postinfectious acute necrotizing hemorrhagic ...
        • G04.32 Postimmunization acute necrotizing hemorrhagi...
        • G04.39 Other acute necrotizing hemorrhagic encephalo...
      • G04.8 Other encephalitis, myelitis and encephalomye...
        • G04.81 Other encephalitis and encephalomyelitis
        • G04.89 Other myelitis
      • G04.9 Encephalitis, myelitis and encephalomyelitis,...
        • G04.90 Encephalitis and encephalomyelitis, unspecifi...
        • G04.91 Myelitis, unspecified
    G04.-
    )
  • meningomyelitis (
    ICD-10-CM Diagnosis Code G04
    • G04 Encephalitis, myelitis and encephalomyelitis
      • G04.0 Acute disseminated encephalitis and encephalo...
        • G04.00 Acute disseminated encephalitis and encephalo...
        • G04.01 Postinfectious acute disseminated encephaliti...
        • G04.02 Postimmunization acute disseminated encephali...
      • G04.1 Tropical spastic paraplegia
      • G04.2 Bacterial meningoencephalitis and meningomyel...
      • G04.3 Acute necrotizing hemorrhagic encephalopathy
        • G04.30 Acute necrotizing hemorrhagic encephalopathy,...
        • G04.31 Postinfectious acute necrotizing hemorrhagic ...
        • G04.32 Postimmunization acute necrotizing hemorrhagi...
        • G04.39 Other acute necrotizing hemorrhagic encephalo...
      • G04.8 Other encephalitis, myelitis and encephalomye...
        • G04.81 Other encephalitis and encephalomyelitis
        • G04.89 Other myelitis
      • G04.9 Encephalitis, myelitis and encephalomyelitis,...
        • G04.90 Encephalitis and encephalomyelitis, unspecifi...
        • G04.91 Myelitis, unspecified
    G04.-
    )
Includes
Includes Help
"Includes" further defines, or give examples of, the content of the code or category.
  • arachnoiditis NOS
  • leptomeningitis NOS
  • meningitis NOS
  • pachymeningitis NOS
The following code(s) above G03 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 G03:
  • G00-G99
    2020 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
Clinical Information
  • A disorder characterized by acute inflammation of the meninges of the brain and/or spinal cord.
  • A disorder characterized by inflammation of the arachnoid membrane and adjacent subarachnoid space.
  • Acute or chronic inflammation of the arachnoid membrane of the meninges most often involving the spinal cord or base of the brain. This term generally refers to a persistent inflammatory process characterized by thickening of the arachnoid membrane and dural adhesions. Associated conditions include prior surgery, infections, trauma, subarachnoid hemorrhage, and chemical irritation. Clinical features vary with the site of inflammation, but include cranial neuropathies, radiculopathies, and myelopathies. (from Joynt, Clinical Neurology, 1997, ch48, p25)
  • Brain infection
  • Inflammation of the arachnoid membrane and adjacent subarachnoid space. (on-line medical dictionary)
  • Inflammation of the coverings of the brain and/or spinal cord, which consist of the pia mater; arachnoid; and dura mater. Infections (viral, bacterial, and fungal) are the most common causes of this condition, but subarachnoid hemorrhage (hemorrhages, subarachnoid), chemical irritation (chemical meningitis), granulomatous conditions, neoplastic conditions (carcinomatous meningitis), and other inflammatory conditions may produce this syndrome. (from Joynt, Clinical Neurology, 1994, ch24, p6)
  • Inflammation of the meninges (three thin layers of tissue that cover and protect the brain and spinal cord). Meningitis is usually caused by a bacterial or viral infection, but sometimes is caused by cancer, drug allergies, or inflammatory diseases.
  • Inflammation of the meninges.
  • Meningitis is inflammation of the thin tissue that surrounds the brain and spinal cord, called the meninges. There are several types of meningitis. The most common is viral meningitis, which you get when a virus enters the body through the nose or mouth and travels to the brain. Bacterial meningitis is rare, but can be deadly. It usually starts with bacteria that cause a cold-like infection. It can block blood vessels in the brain and lead to stroke and brain damage. It can also harm other organs. pneumococcal infections and meningococcal infections can cause bacterial meningitis.anyone can get meningitis, but it is more common in people whose bodies have trouble fighting infections. Meningitis can progress rapidly. You should seek medical care quickly if you have
    • a sudden fever
    • a severe headache
    • a stiff neck
    early treatment can help prevent serious problems, including death. Vaccines can prevent some of the bacterial infections that cause meningitis. Parents of adolescents and students living in college dorms should talk to a doctor about the vaccination.
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
ICD-10-CM Codes Adjacent To G03
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)
G04.02 Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis

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