ICD-10-CM
Diseases of the nervous system
Chapter 6, G00-G99. CDC FY2027 file dated June 16, 2026.
License: a US government work, in the public domain (Public Domain Mark 1.0).
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Categories
68 categories in this chapter. Open one, or page through every code below.
- G00Bacterial meningitis, not elsewhere classified
- G01Meningitis in bacterial diseases classified elsewhere
- G02Meningitis in other infec/parastc diseases classd elswhr
- G03Meningitis due to other and unspecified causes
- G04Encephalitis, myelitis and encephalomyelitis
- G05Encphlts, myelitis and encephalomyelitis in dis classd elswhr
- G06Intracranial and intraspinal abscess and granuloma
- G07Intcrn and intraspinal abscs and granuloma in dis classd elswhr
- G08Intracranial and intraspinal phlebitis and thrombophlebitis
- G09Sequelae of inflammatory diseases of central nervous system
- G10Huntington's disease
- G11Hereditary ataxia
- G12Spinal muscular atrophy and related syndromes
- G13Systemic atrophies aff cnsl in diseases classd elswhr
- G14Postpolio syndrome
- G20Parkinson's disease
- G21Secondary parkinsonism
- G23Other degenerative diseases of basal ganglia
- G24Dystonia
- G25Other extrapyramidal and movement disorders
- G26Extrapyramidal and movement disord in diseases classd elswhr
- G30Alzheimer's disease
- G31Other degenerative diseases of nervous system, NEC
- G32Other degeneratv disord of nervous system in dis classd elswhr
- G35Multiple sclerosis
- G36Other acute disseminated demyelination
- G37Other demyelinating diseases of central nervous system
- G40Epilepsy and recurrent seizures
- G43Migraine
- G44Other headache syndromes
- G45Transient cerebral ischemic attacks and related syndromes
- G46Vascular syndromes of brain in cerebrovascular diseases
- G47Sleep disorders
- G50Disorders of trigeminal nerve
- G51Facial nerve disorders
- G52Disorders of other cranial nerves
32 more categories are in this chapter. Type a code or a term to open one.
Codes
A header groups codes and is not billed. A billable code is one you can report. Listed second marks a billable manifestation code (its CDC title says it is "classified elsewhere"): code the underlying disease or condition first, then this code.
161 to 200 of 932
- G32.81Cerebellar ataxia in diseases classified elsewhereListed second
- G32.89Other degeneratv disord of nervous system in dis classd elswhrListed second
- G35Multiple sclerosisHeader
- G35.ARelapsing-remitting multiple sclerosisBillable
- G35.BPrimary progressive multiple sclerosisHeader
- G35.B0Primary progressive multiple sclerosis, unspecifiedBillable
- G35.B1Active primary progressive multiple sclerosisBillable
- G35.B2Non-active primary progressive multiple sclerosisBillable
- G35.CSecondary progressive multiple sclerosisHeader
- G35.C0Secondary progressive multiple sclerosis, unspecifiedBillable
- G35.C1Active secondary progressive multiple sclerosisBillable
- G35.C2Non-active secondary progressive multiple sclerosisBillable
- G35.DMultiple sclerosis, unspecifiedBillable
- G36Other acute disseminated demyelinationHeader
- G36.0Neuromyelitis optica [Devic]Billable
- G36.1Acute and subacute hemorrhagic leukoencephalitis [Hurst]Billable
- G36.8Other specified acute disseminated demyelinationBillable
- G36.9Acute disseminated demyelination, unspecifiedBillable
- G37Other demyelinating diseases of central nervous systemHeader
- G37.0Diffuse sclerosis of central nervous systemBillable
- G37.1Central demyelination of corpus callosumBillable
- G37.2Central pontine myelinolysisBillable
- G37.3Acute transverse myelitis in demyelinating disease of cnslBillable
- G37.4Subacute necrotizing myelitis of central nervous systemBillable
- G37.5Concentric sclerosis [Balo] of central nervous systemBillable
- G37.8Other demyelinating diseases of central nervous systemHeader
- G37.81Myelin oligodendrocyte glycoprotein antibody diseaseBillable
- G37.89Other specified demyelinating diseases of cnslBillable
- G37.9Demyelinating disease of central nervous system, unspecifiedBillable
- G40Epilepsy and recurrent seizuresHeader
- G40.0Local-rel (focal) idio epilepsy with seizures of loc onsetHeader
- G40.00Local-rel (focal) idio epi with seiz of loc onset, not ntrctHeader
- G40.001Local-rel idio epi with seiz of loc onst, not ntrct, with stat epiBillable
- G40.009Local-rel idio epi with seiz of loc onst,not ntrct,without stat epiBillable
- G40.01Local-rel (focal) idio epi with seizures of loc onset, ntrctHeader
- G40.011Local-rel idio epi with seiz of loc onset, ntrct, with stat epiBillable
- G40.019Local-rel idio epi with seiz of loc onset, ntrct, without stat epiBillable
- G40.1Local-rel (focal) symptc epilepsy with simple partial seizuresHeader
- G40.10Local-rel symptc epi with simple partial seiz, not ntrctHeader
- G40.101Local-rel symptc epi with simp part seiz, not ntrct, with stat epiBillable