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
- G40.841KCNQ2-related epilepsy, not intractable, with status epilepticus
- G40.842KCNQ2-related epilepsy, not intractable, without status epilepticus
- G40.843KCNQ2-related epilepsy, intractable, with status epilepticus
- G40.844KCNQ2-related epilepsy, intractable, without status epilepticus
- G40.89Other seizures
- G40.9Epilepsy, unspecified
- G40.90Epilepsy, unspecified, not intractable
- G40.901Epilepsy, unspecified, not intractable, with status epilepticus
- G40.909Epilepsy, unspecified, not intractable, without status epilepticus
- G40.91Epilepsy, unspecified, intractable
- G40.911Epilepsy, unspecified, intractable, with status epilepticus
- G40.919Epilepsy, unspecified, intractable, without status epilepticus
- G40.AAbsence epileptic syndrome
- G40.A0Absence epileptic syndrome, not intractable
- G40.A01Absence epileptic syndrome, not intractable, with status epilepticus
- G40.A09Absence epileptic syndrome, not intractable, without status epilepticus
- G40.A1Absence epileptic syndrome, intractable
- G40.A11Absence epileptic syndrome, intractable, with status epilepticus
- G40.A19Absence epileptic syndrome, intractable, without status epilepticus
- G40.BJuvenile myoclonic epilepsy [impulsive petit mal]
- G40.B0Juvenile myoclonic epilepsy, not intractable
- G40.B01Juvenile myoclonic epilepsy, not intractable, with status epilepticus
- G40.B09Juvenile myoclonic epilepsy, not intractable, without status epilepticus
- G40.B1Juvenile myoclonic epilepsy, intractable
- G40.B11Juvenile myoclonic epilepsy, intractable, with status epilepticus
- G40.B19Juvenile myoclonic epilepsy, intractable, without status epilepticus
- G40.CLafora progressive myoclonus epilepsy
- G40.C0Lafora progressive myoclonus epilepsy, not intractable
- G40.C01Lafora progressive myoclonus epilepsy, not intractable, with status epilepticus
- G40.C09Lafora progressive myoclonus epilepsy, not intractable, without status epilepticus
- G40.C1Lafora progressive myoclonus epilepsy, intractable
- G40.C11Lafora progressive myoclonus epilepsy, intractable, with status epilepticus
- G40.C19Lafora progressive myoclonus epilepsy, intractable, without status epilepticus
- G43Migraine
- G43.0Migraine without aura
- G43.00Migraine without aura, not intractable
- G43.001Migraine without aura, not intractable, with status migrainosus
- G43.009Migraine without aura, not intractable, without status migrainosus
- G43.01Migraine without aura, intractable
- G43.011Migraine without aura, intractable, with status migrainosus
- G43.019Migraine without aura, intractable, without status migrainosus
- G43.1Migraine with aura
- G43.10Migraine with aura, not intractable
- G43.101Migraine with aura, not intractable, with status migrainosus
- G43.109Migraine with aura, not intractable, without status migrainosus
- G43.11Migraine with aura, intractable
- G43.111Migraine with aura, intractable, with status migrainosus
- G43.119Migraine with aura, intractable, without status migrainosus
- G43.4Hemiplegic migraine
- G43.40Hemiplegic migraine, not intractable