G00–G99: Diseases of the Nervous System
Chapter 6 of ICD-10-CM 2027, 932 codes in 11 blocks.
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Chapter instructions
Excludes2: not included here, code separately if applicable
- 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)
Codes in this chapter
All codesBillable only932 results
- G31.83Neurocognitive disorder with Lewy bodies
- G31.84Mild cognitive impairment of uncertain or unknown etiology
- G31.85Corticobasal degeneration
- G31.86Alexander disease
- G31.87Primary progressive apraxia of speech
- G31.89Other specified degenerative diseases of nervous system
- G31.9Degenerative disease of nervous system, unspecified
- G32Other degenerative disorders of nervous system in diseases classified elsewhere
- G32.0Subacute combined degeneration of spinal cord in diseases classified elsewhere
- G32.8Other specified degenerative disorders of nervous system in diseases classified elsewhere
- G32.81Cerebellar ataxia in diseases classified elsewhere
- G32.89Other specified degenerative disorders of nervous system in diseases classified elsewhere
- G35Multiple sclerosis
- G35.ARelapsing-remitting multiple sclerosis
- G35.BPrimary progressive multiple sclerosis
- G35.B0Primary progressive multiple sclerosis, unspecified
- G35.B1Active primary progressive multiple sclerosis
- G35.B2Non-active primary progressive multiple sclerosis
- G35.CSecondary progressive multiple sclerosis
- G35.C0Secondary progressive multiple sclerosis, unspecified
- G35.C1Active secondary progressive multiple sclerosis
- G35.C2Non-active secondary progressive multiple sclerosis
- G35.DMultiple sclerosis, unspecified
- G36Other acute disseminated demyelination
- G36.0Neuromyelitis optica [Devic]
- G36.1Acute and subacute hemorrhagic leukoencephalitis [Hurst]
- G36.8Other specified acute disseminated demyelination
- G36.9Acute disseminated demyelination, unspecified
- G37Other demyelinating diseases of central nervous system
- G37.0Diffuse sclerosis of central nervous system
- G37.1Central demyelination of corpus callosum
- G37.2Central pontine myelinolysis
- G37.3Acute transverse myelitis in demyelinating disease of central nervous system
- G37.4Subacute necrotizing myelitis of central nervous system
- G37.5Concentric sclerosis [Balo] of central nervous system
- G37.8Other specified demyelinating diseases of central nervous system
- G37.81Myelin oligodendrocyte glycoprotein antibody disease
- G37.89Other specified demyelinating diseases of central nervous system
- G37.9Demyelinating disease of central nervous system, unspecified
- G40Epilepsy and recurrent seizures
- G40.0Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset
- G40.00Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable
- G40.001Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, with status epilepticus
- G40.009Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, without status epilepticus
- G40.01Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable
- G40.011Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable, with status epilepticus
- G40.019Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable, without status epilepticus
- G40.1Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures
- G40.10Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable
- G40.101Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable, with status epilepticus