2020 ICD-10-CM Diagnosis Code G98

Other disorders of nervous system not elsewhere classified

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • G98 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 G98 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of G98 - other international versions of ICD-10 G98 may differ.
Includes
Includes Help
"Includes" further defines, or give examples of, the content of the code or category.
  • nervous system disorder NOS
The following code(s) above G98 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 G98:
  • 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 non-neoplastic or neoplastic disorder that affects the brain, spinal cord, or peripheral nerves.
  • Any deviation from the normal structure or function of the nervous system that is manifested by a characteristic set of symptoms and signs.
  • Diseases of the central and peripheral nervous system. This includes disorders of the brain, spinal cord, cranial nerves, peripheral nerves, nerve roots, autonomic nervous system, neuromuscular junction, and muscle.
  • Impairment of health or a condition of abnormal functioning of the nervous system.
  • Neurologic diseases are disorders of the brain, spinal cord and nerves throughout your body. Together they control all the workings of the body. When something goes wrong with a part of your nervous system, you can have trouble moving, speaking, swallowing, breathing or learning. You can also have problems with your memory, senses or mood. There are more than 600 neurologic diseases. Major types include
    • diseases caused by faulty genes, such as huntington's disease and muscular dystrophy
    • problems with the way the nervous system develops, such as spina bifida
    • degenerative diseases, where nerve cells are damaged or die, such as parkinson's disease and alzheimer's disease
    • diseases of the blood vessels that supply the brain, such as stroke
    • injuries to the spinal cord and brain
    • seizure disorders, such as epilepsy
    • cancer, such as brain tumors
    • infections, such as meningitis
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 G98
G97.51 Postprocedural hemorrhage of a nervous system organ or structure following a nervous system procedure
G97.52 Postprocedural hemorrhage of a nervous system organ or structure following other procedure
G97.6 Postprocedural hematoma and seroma of a nervous system organ or structure following a procedure
G97.61 Postprocedural hematoma of a nervous system organ or structure following a nervous system procedure
G97.62 Postprocedural hematoma of a nervous system organ or structure following other procedure
G97.63 Postprocedural seroma of a nervous system organ or structure following a nervous system procedure
G97.64 Postprocedural seroma of a nervous system organ or structure following other procedure
G97.8 Other intraoperative and postprocedural complications and disorders of nervous system
G97.81 Other intraoperative complications of nervous system
G97.82 Other postprocedural complications and disorders of nervous system
G98 Other disorders of nervous system not elsewhere classified
G98.0 Neurogenic arthritis, not elsewhere classified
G98.8 Other disorders of nervous system
G99 Other disorders of nervous system in diseases classified elsewhere
G99.0 Autonomic neuropathy in diseases classified elsewhere
G99.2 Myelopathy in diseases classified elsewhere
G99.8 Other specified disorders of nervous system in diseases classified elsewhere
H00 Hordeolum and chalazion
H00.0 Hordeolum (externum) (internum) of eyelid
H00.01 Hordeolum externum
H00.011 …… right upper eyelid

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