G00-G99
ICD-10-CM Chapter 6: Diseases of the nervous system
Chapter 6 of the ICD-10-CM tabular list covers G00-G99. It contains 11 blocks of related categories, listed below with the categories published in each.
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- 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)
G00-G09 — Inflammatory diseases of the central nervous system
- G00Bacterial meningitis, not elsewhere classifiedcategory
- G01Meningitis in bacterial diseases classified elsewhere
- G02Meningitis in oth infec/parastc diseases classd elswhr
- G03Meningitis due to other and unspecified causescategory
- G04Encephalitis, myelitis and encephalomyelitiscategory
- G05Encphlts, myelitis & encephalomyelitis in dis classd elswhrcategory
- G06Intracranial and intraspinal abscess and granulomacategory
- G07Intcrn & intraspinal abscs & granuloma in dis classd elswhr
- G08Intracranial and intraspinal phlebitis and thrombophlebitis
- G09Sequelae of inflammatory diseases of central nervous system
G10-G14 — Systemic atrophies primarily affecting the central nervous system
G20-G26 — Extrapyramidal and movement disorders
G30-G32 — Other degenerative diseases of the nervous system
G35-G37 — Demyelinating diseases of the central nervous system
G40-G47 — Episodic and paroxysmal disorders
G50-G59 — Nerve, nerve root and plexus disorders
- G50Disorders of trigeminal nervecategory
- G51Facial nerve disorderscategory
- G52Disorders of other cranial nervescategory
- G53Cranial nerve disorders in diseases classified elsewhere
- G54Nerve root and plexus disorderscategory
- G55Nerve root and plexus compressions in diseases classd elswhr
- G56Mononeuropathies of upper limbcategory
- G57Mononeuropathies of lower limbcategory
- G58Other mononeuropathiescategory
- G59Mononeuropathy in diseases classified elsewhere
G60-G65 — Polyneuropathies and other disorders of the peripheral nervous system
G70-G73 — Diseases of myoneural junction and muscle
G80-G83 — Cerebral palsy and other paralytic syndromes
G89-G99 — Other disorders of the nervous system
- G89Pain, not elsewhere classifiedcategory
- G90Disorders of autonomic nervous systemcategory
- G91Hydrocephaluscategory
- G92Toxic encephalopathycategory
- G93Other disorders of braincategory
- G94Other disorders of brain in diseases classified elsewhere
- G95Other and unspecified diseases of spinal cordcategory
- G96Other disorders of central nervous systemcategory
- G97Intraop and postproc comp and disorders of nervous sys, NECcategory
- G98Other disorders of nervous system not elsewhere classifiedcategory
- G99Oth disorders of nervous system in diseases classd elswhrcategory
Source
ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.