CC Codes: Diseases of the Nervous System (G00-G99)
218 codes in G00-G99 are a CC as a secondary diagnosis under MS-DRG v44.0 (FY2027). Full CC list
G00-G09
| G03.1 | Chronic meningitis |
| G03.2 | Benign recurrent meningitis [Mollaret] |
| G04.1 | Tropical spastic paraplegia |
G10-G14
| G10 | Huntington's disease |
| G11.0 | Congenital nonprogressive ataxia |
| G11.10 | Early-onset cerebellar ataxia, unspecified |
| G11.11 | Friedreich ataxia |
| G11.19 | Other early-onset cerebellar ataxia |
| G11.2 | Late-onset cerebellar ataxia |
| G11.3 | Cerebellar ataxia with defective DNA repair |
| G11.4 | Hereditary spastic paraplegia |
| G11.5 | Hypomyelination - hypogonadotropic hypogonadism - hypodontia |
| G11.6 | Leukodystrophy with vanishing white matter disease |
| G11.8 | Other hereditary ataxias |
| G11.9 | Hereditary ataxia, unspecified |
| G12.0 | Infantile spinal muscular atrophy, type I [Werdnig-Hoffman] |
| G12.1 | Other inherited spinal muscular atrophy |
| G12.20 | Motor neuron disease, unspecified |
| G12.21 | Amyotrophic lateral sclerosis |
| G12.22 | Progressive bulbar palsy |
| G12.23 | Primary lateral sclerosis |
| G12.24 | Familial motor neuron disease |
| G12.25 | Progressive spinal muscle atrophy |
| G12.29 | Other motor neuron disease |
| G12.8 | Other spinal muscular atrophies and related syndromes |
| G12.9 | Spinal muscular atrophy, unspecified |
G20-G26
| G21.11 | Neuroleptic induced parkinsonism |
| G21.19 | Other drug induced secondary parkinsonism |
| G21.2 | Secondary parkinsonism due to other external agents |
| G21.3 | Postencephalitic parkinsonism |
| G21.8 | Other secondary parkinsonism |
| G21.9 | Secondary parkinsonism, unspecified |
| G23.0 | Hallervorden-Spatz disease |
| G23.1 | Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski] |
| G23.2 | Striatonigral degeneration |
| G23.3 | Hypomyelination with atrophy of the basal ganglia and cerebellum |
| G23.8 | Other specified degenerative diseases of basal ganglia |
| G23.9 | Degenerative disease of basal ganglia, unspecified |
| G24.02 | Drug induced acute dystonia |
| G24.09 | Other drug induced dystonia |
| G24.2 | Idiopathic nonfamilial dystonia |
| G24.8 | Other dystonia |
| G25.82 | Stiff-man syndrome |
| G25.9 | Extrapyramidal and movement disorder, unspecified |
G30-G32
| G31.81 | Alpers disease |
| G31.82 | Leigh's disease |
| G32.0 | Subacute combined degeneration of spinal cord in diseases classified elsewhere |
| G32.81 | Cerebellar ataxia in diseases classified elsewhere |
G35-G37
| G36.0 | Neuromyelitis optica [Devic] |
| G36.1 | Acute and subacute hemorrhagic leukoencephalitis [Hurst] |
| G36.8 | Other specified acute disseminated demyelination |
| G36.9 | Acute disseminated demyelination, unspecified |
| G37.0 | Diffuse sclerosis of central nervous system |
| G37.1 | Central demyelination of corpus callosum |
| G37.2 | Central pontine myelinolysis |
| G37.3 | Acute transverse myelitis in demyelinating disease of central nervous system |
| G37.5 | Concentric sclerosis [Balo] of central nervous system |
| G37.81 | Myelin oligodendrocyte glycoprotein antibody disease |
| G37.89 | Other specified demyelinating diseases of central nervous system |
| G37.9 | Demyelinating disease of central nervous system, unspecified |
G40-G47
| G40.001 | Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, with status epilepticus |
| G40.009 | Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, without status epilepticus |
| G40.011 | Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable, with status epilepticus |
| G40.019 | Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable, without status epilepticus |
| G40.101 | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable, with status epilepticus |
| G40.109 | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable, without status epilepticus |
| G40.111 | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable, with status epilepticus |
| G40.119 | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable, without status epilepticus |
| G40.201 | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable, with status epilepticus |
| G40.209 | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable, without status epilepticus |
| G40.211 | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable, with status epilepticus |
| G40.219 | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable, without status epilepticus |
| G40.411 | Other generalized epilepsy and epileptic syndromes, intractable, with status epilepticus |
| G40.419 | Other generalized epilepsy and epileptic syndromes, intractable, without status epilepticus |
| G40.501 | Epileptic seizures related to external causes, not intractable, with status epilepticus |
| G40.509 | Epileptic seizures related to external causes, not intractable, without status epilepticus |
| G40.801 | Other epilepsy, not intractable, with status epilepticus |
| G40.802 | Other epilepsy, not intractable, without status epilepticus |
| G40.803 | Other epilepsy, intractable, with status epilepticus |
| G40.804 | Other epilepsy, intractable, without status epilepticus |
| G40.811 | Lennox-Gastaut syndrome, not intractable, with status epilepticus |
| G40.812 | Lennox-Gastaut syndrome, not intractable, without status epilepticus |
| G40.813 | Lennox-Gastaut syndrome, intractable, with status epilepticus |
| G40.814 | Lennox-Gastaut syndrome, intractable, without status epilepticus |
| G40.821 | Epileptic spasms, not intractable, with status epilepticus |
| G40.822 | Epileptic spasms, not intractable, without status epilepticus |
| G40.823 | Epileptic spasms, intractable, with status epilepticus |
| G40.824 | Epileptic spasms, intractable, without status epilepticus |
| G40.833 | Dravet syndrome, intractable, with status epilepticus |
| G40.834 | Dravet syndrome, intractable, without status epilepticus |
| G40.841 | KCNQ2-related epilepsy, not intractable, with status epilepticus |
| G40.842 | KCNQ2-related epilepsy, not intractable, without status epilepticus |
| G40.843 | KCNQ2-related epilepsy, intractable, with status epilepticus |
| G40.844 | KCNQ2-related epilepsy, intractable, without status epilepticus |
| G40.89 | Other seizures |
| G40.911 | Epilepsy, unspecified, intractable, with status epilepticus |
| G40.919 | Epilepsy, unspecified, intractable, without status epilepticus |
| G40.A11 | Absence epileptic syndrome, intractable, with status epilepticus |
| G40.A19 | Absence epileptic syndrome, intractable, without status epilepticus |
| G40.B01 | Juvenile myoclonic epilepsy, not intractable, with status epilepticus |
| G40.B09 | Juvenile myoclonic epilepsy, not intractable, without status epilepticus |
| G40.B11 | Juvenile myoclonic epilepsy, intractable, with status epilepticus |
| G40.B19 | Juvenile myoclonic epilepsy, intractable, without status epilepticus |
| G40.C01 | Lafora progressive myoclonus epilepsy, not intractable, with status epilepticus |
| G40.C09 | Lafora progressive myoclonus epilepsy, not intractable, without status epilepticus |
| G40.C11 | Lafora progressive myoclonus epilepsy, intractable, with status epilepticus |
| G40.C19 | Lafora progressive myoclonus epilepsy, intractable, without status epilepticus |
| G43.601 | Persistent migraine aura with cerebral infarction, not intractable, with status migrainosus |
| G43.609 | Persistent migraine aura with cerebral infarction, not intractable, without status migrainosus |
| G43.611 | Persistent migraine aura with cerebral infarction, intractable, with status migrainosus |
| G43.619 | Persistent migraine aura with cerebral infarction, intractable, without status migrainosus |
| G45.0 | Vertebro-basilar artery syndrome |
| G45.1 | Carotid artery syndrome (hemispheric) |
| G45.2 | Multiple and bilateral precerebral artery syndromes |
| G45.3 | Amaurosis fugax |
| G45.8 | Other transient cerebral ischemic attacks and related syndromes |
| G45.9 | Transient cerebral ischemic attack, unspecified |
| G46.0 | Middle cerebral artery syndrome |
| G46.1 | Anterior cerebral artery syndrome |
| G46.2 | Posterior cerebral artery syndrome |
G60-G65
| G60.1 | Refsum's disease |
| G61.0 | Guillain-Barre syndrome |
| G61.81 | Chronic inflammatory demyelinating polyneuritis |
| G62.81 | Critical illness polyneuropathy |
G70-G73
| G70.80 | Lambert-Eaton syndrome, unspecified |
| G70.81 | Lambert-Eaton syndrome in disease classified elsewhere |
| G71.20 | Congenital myopathy, unspecified |
| G71.21 | Nemaline myopathy |
| G71.220 | X-linked myotubular myopathy |
| G71.228 | Other centronuclear myopathy |
| G71.29 | Other congenital myopathy |
| G72.0 | Drug-induced myopathy |
| G72.1 | Alcoholic myopathy |
| G72.2 | Myopathy due to other toxic agents |
| G72.81 | Critical illness myopathy |
| G73.1 | Lambert-Eaton syndrome in neoplastic disease |
| G73.3 | Myasthenic syndromes in other diseases classified elsewhere |
G80-G83
| G80.1 | Spastic diplegic cerebral palsy |
| G80.2 | Spastic hemiplegic cerebral palsy |
| G80.3 | Athetoid cerebral palsy |
| G81.00 | Flaccid hemiplegia affecting unspecified side |
| G81.01 | Flaccid hemiplegia affecting right dominant side |
| G81.02 | Flaccid hemiplegia affecting left dominant side |
| G81.03 | Flaccid hemiplegia affecting right nondominant side |
| G81.04 | Flaccid hemiplegia affecting left nondominant side |
| G81.10 | Spastic hemiplegia affecting unspecified side |
| G81.11 | Spastic hemiplegia affecting right dominant side |
| G81.12 | Spastic hemiplegia affecting left dominant side |
| G81.13 | Spastic hemiplegia affecting right nondominant side |
| G81.14 | Spastic hemiplegia affecting left nondominant side |
| G81.90 | Hemiplegia, unspecified affecting unspecified side |
| G81.91 | Hemiplegia, unspecified affecting right dominant side |
| G81.92 | Hemiplegia, unspecified affecting left dominant side |
| G81.93 | Hemiplegia, unspecified affecting right nondominant side |
| G81.94 | Hemiplegia, unspecified affecting left nondominant side |
| G82.20 | Paraplegia, unspecified |
| G82.21 | Paraplegia, complete |
| G82.22 | Paraplegia, incomplete |
| G83.0 | Diplegia of upper limbs |
| G83.4 | Cauda equina syndrome |
G89-G99
| G90.3 | Multi-system degeneration of the autonomic nervous system |
| G90.50 | Complex regional pain syndrome I, unspecified |
| G90.511 | Complex regional pain syndrome I of right upper limb |
| G90.512 | Complex regional pain syndrome I of left upper limb |
| G90.513 | Complex regional pain syndrome I of upper limb, bilateral |
| G90.519 | Complex regional pain syndrome I of unspecified upper limb |
| G90.521 | Complex regional pain syndrome I of right lower limb |
| G90.522 | Complex regional pain syndrome I of left lower limb |
| G90.523 | Complex regional pain syndrome I of lower limb, bilateral |
| G90.529 | Complex regional pain syndrome I of unspecified lower limb |
| G90.59 | Complex regional pain syndrome I of other specified site |
| G91.0 | Communicating hydrocephalus |
| G91.1 | Obstructive hydrocephalus |
| G91.2 | (Idiopathic) normal pressure hydrocephalus |
| G91.3 | Post-traumatic hydrocephalus, unspecified |
| G91.8 | Other hydrocephalus |
| G91.9 | Hydrocephalus, unspecified |
| G92.03 | Immune effector cell-associated neurotoxicity syndrome, grade 3 |
| G92.04 | Immune effector cell-associated neurotoxicity syndrome, grade 4 |
| G92.05 | Immune effector cell-associated neurotoxicity syndrome, grade 5 |
| G93.1 | Anoxic brain damage, not elsewhere classified |
| G93.40 | Encephalopathy, unspecified |
| G93.42 | Megalencephalic leukoencephalopathy with subcortical cysts |
| G93.43 | Leukoencephalopathy with calcifications and cysts |
| G93.44 | Adult-onset leukodystrophy with axonal spheroids |
| G93.45 | Developmental and epileptic encephalopathy |
| G93.49 | Other encephalopathy |
| G95.0 | Syringomyelia and syringobulbia |
| G95.20 | Unspecified cord compression |
| G95.29 | Other cord compression |
| G95.81 | Conus medullaris syndrome |
| G95.89 | Other specified diseases of spinal cord |
| G95.9 | Disease of spinal cord, unspecified |
| G96.00 | Cerebrospinal fluid leak, unspecified |
| G96.01 | Cranial cerebrospinal fluid leak, spontaneous |
| G96.02 | Spinal cerebrospinal fluid leak, spontaneous |
| G96.08 | Other cranial cerebrospinal fluid leak |
| G96.09 | Other spinal cerebrospinal fluid leak |
| G96.11 | Dural tear |
| G97.0 | Cerebrospinal fluid leak from spinal puncture |
| G97.2 | Intracranial hypotension following ventricular shunting |
| G97.31 | Intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating a nervous system procedure |
| G97.32 | Intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating other procedure |
| G97.41 | Accidental puncture or laceration of dura during a procedure |
| G97.48 | Accidental puncture and laceration of other nervous system organ or structure during a nervous system procedure |
| G97.49 | Accidental puncture and laceration of other nervous system organ or structure during other procedure |
| G97.51 | Postprocedural hemorrhage of a nervous system organ or structure following a nervous system procedure |
| G97.52 | Postprocedural hemorrhage of a nervous system organ or structure following other procedure |
| G97.61 | Postprocedural hematoma of a nervous system organ or structure following a nervous system procedure |
| G97.62 | Postprocedural hematoma of a nervous system organ or structure following other procedure |
| G97.63 | Postprocedural seroma of a nervous system organ or structure following a nervous system procedure |
| G97.64 | Postprocedural seroma of a nervous system organ or structure following other procedure |
| G97.81 | Other intraoperative complications of nervous system |
| G97.82 | Other postprocedural complications and disorders of nervous system |
| G97.83 | Intracranial hypotension following lumbar cerebrospinal fluid shunting |
| G97.84 | Intracranial hypotension following other procedure |
| G99.0 | Autonomic neuropathy in diseases classified elsewhere |
| G99.2 | Myelopathy in diseases classified elsewhere |