ICD-10-CM codes starting with G

932 codes, page 1 of 10. Every code ever valid for billing is listed, including those now retired.

Code	Description	Status
G00	Bacterial meningitis, not elsewhere classified	Not billable
G00.0	Hemophilus meningitis	Valid
G00.1	Pneumococcal meningitis	Valid
G00.2	Streptococcal meningitis	Valid
G00.3	Staphylococcal meningitis	Valid
G00.8	Other bacterial meningitis	Valid
G00.9	Bacterial meningitis, unspecified	Valid
G01	Meningitis in bacterial diseases classified elsewhere	Valid
G02	Meningitis in other infectious and parasitic diseases classified elsewhere	Valid
G03	Meningitis due to other and unspecified causes	Not billable
G03.0	Nonpyogenic meningitis	Valid
G03.1	Chronic meningitis	Valid
G03.2	Benign recurrent meningitis [Mollaret]	Valid
G03.8	Meningitis due to other specified causes	Valid
G03.9	Meningitis, unspecified	Valid
G04	Encephalitis, myelitis and encephalomyelitis	Not billable
G04.0	Acute disseminated encephalitis and encephalomyelitis (ADEM)	Not billable
G04.00	Acute disseminated encephalitis and encephalomyelitis, unspecified	Valid
G04.01	Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)	Valid
G04.02	Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis	Valid
G04.1	Tropical spastic paraplegia	Valid
G04.2	Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified	Valid
G04.3	Acute necrotizing hemorrhagic encephalopathy	Not billable
G04.30	Acute necrotizing hemorrhagic encephalopathy, unspecified	Valid
G04.31	Postinfectious acute necrotizing hemorrhagic encephalopathy	Valid
G04.32	Postimmunization acute necrotizing hemorrhagic encephalopathy	Valid
G04.39	Other acute necrotizing hemorrhagic encephalopathy	Valid
G04.8	Other encephalitis, myelitis and encephalomyelitis	Not billable
G04.81	Other encephalitis and encephalomyelitis	Valid
G04.82	Acute flaccid myelitis	Valid
G04.89	Other myelitis	Valid
G04.9	Encephalitis, myelitis and encephalomyelitis, unspecified	Not billable
G04.90	Encephalitis and encephalomyelitis, unspecified	Valid
G04.91	Myelitis, unspecified	Valid
G05	Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere	Not billable
G05.3	Encephalitis and encephalomyelitis in diseases classified elsewhere	Valid
G05.4	Myelitis in diseases classified elsewhere	Valid
G06	Intracranial and intraspinal abscess and granuloma	Not billable
G06.0	Intracranial abscess and granuloma	Valid
G06.1	Intraspinal abscess and granuloma	Valid
G06.2	Extradural and subdural abscess, unspecified	Valid
G07	Intracranial and intraspinal abscess and granuloma in diseases classified elsewhere	Valid
G08	Intracranial and intraspinal phlebitis and thrombophlebitis	Valid
G09	Sequelae of inflammatory diseases of central nervous system	Valid
G10	Huntington's disease	Valid
G11	Hereditary ataxia	Not billable
G11.0	Congenital nonprogressive ataxia	Valid
G11.1	Early-onset cerebellar ataxia	Not billable
G11.10	Early-onset cerebellar ataxia, unspecified	Valid
G11.11	Friedreich ataxia	Valid
G11.19	Other early-onset cerebellar ataxia	Valid
G11.2	Late-onset cerebellar ataxia	Valid
G11.3	Cerebellar ataxia with defective DNA repair	Valid
G11.4	Hereditary spastic paraplegia	Valid
G11.5	Hypomyelination - hypogonadotropic hypogonadism - hypodontia	Valid
G11.6	Leukodystrophy with vanishing white matter disease	Valid
G11.8	Other hereditary ataxias	Valid
G11.9	Hereditary ataxia, unspecified	Valid
G12	Spinal muscular atrophy and related syndromes	Not billable
G12.0	Infantile spinal muscular atrophy, type I [Werdnig-Hoffman]	Valid
G12.1	Other inherited spinal muscular atrophy	Valid
G12.2	Motor neuron disease	Not billable
G12.20	Motor neuron disease, unspecified	Valid
G12.21	Amyotrophic lateral sclerosis	Valid
G12.22	Progressive bulbar palsy	Valid
G12.23	Primary lateral sclerosis	Valid
G12.24	Familial motor neuron disease	Valid
G12.25	Progressive spinal muscle atrophy	Valid
G12.29	Other motor neuron disease	Valid
G12.8	Other spinal muscular atrophies and related syndromes	Valid
G12.9	Spinal muscular atrophy, unspecified	Valid
G13	Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere	Not billable
G13.0	Paraneoplastic neuromyopathy and neuropathy	Valid
G13.1	Other systemic atrophy primarily affecting central nervous system in neoplastic disease	Valid
G13.2	Systemic atrophy primarily affecting the central nervous system in myxedema	Valid
G13.8	Systemic atrophy primarily affecting central nervous system in other diseases classified elsewhere	Valid
G14	Postpolio syndrome	Valid
G20	Parkinson's disease	Not billable
G20.A	Parkinson's disease without dyskinesia	Not billable
G20.A1	Parkinson's disease without dyskinesia, without mention of fluctuations	Valid
G20.A2	Parkinson's disease without dyskinesia, with fluctuations	Valid
G20.B	Parkinson's disease with dyskinesia	Not billable
G20.B1	Parkinson's disease with dyskinesia, without mention of fluctuations	Valid
G20.B2	Parkinson's disease with dyskinesia, with fluctuations	Valid
G20.C	Parkinsonism, unspecified	Valid
G21	Secondary parkinsonism	Not billable
G21.0	Malignant neuroleptic syndrome	Valid
G21.1	Other drug-induced secondary parkinsonism	Not billable
G21.11	Neuroleptic induced parkinsonism	Valid
G21.19	Other drug induced secondary parkinsonism	Valid
G21.2	Secondary parkinsonism due to other external agents	Valid
G21.3	Postencephalitic parkinsonism	Valid
G21.4	Vascular parkinsonism	Valid
G21.8	Other secondary parkinsonism	Valid
G21.9	Secondary parkinsonism, unspecified	Valid
G23	Other degenerative diseases of basal ganglia	Not billable
G23.0	Hallervorden-Spatz disease	Valid
G23.1	Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski]	Valid
G23.2	Striatonigral degeneration	Valid
G23.3	Hypomyelination with atrophy of the basal ganglia and cerebellum	Valid