| G40A01 | Absence epileptic syndrome, not intractable, with status epilepticus |
| G40A09 | Absence epileptic syndrome, not intractable, without status epilepticus |
| G40A11 | Absence epileptic syndrome, intractable, with status epilepticus |
| G40A19 | Absence epileptic syndrome, intractable, without status epilepticus |
| G40B01 | Juvenile myoclonic epilepsy, not intractable, with status epilepticus |
| G40B09 | Juvenile myoclonic epilepsy, not intractable, without status epilepticus |
| G40B11 | Juvenile myoclonic epilepsy, intractable, with status epilepticus |
| G40B19 | Juvenile myoclonic epilepsy, intractable, without status epilepticus |
| G43001 | Migraine without aura, not intractable, with status migrainosus |
| G43009 | Migraine without aura, not intractable, without status migrainosus |
| G43011 | Migraine without aura, intractable, with status migrainosus |
| G43019 | Migraine without aura, intractable, without status migrainosus |
| G43101 | Migraine with aura, not intractable, with status migrainosus |
| G43109 | Migraine with aura, not intractable, without status migrainosus |
| G43111 | Migraine with aura, intractable, with status migrainosus |
| G43119 | Migraine with aura, intractable, without status migrainosus |
| G43401 | Hemiplegic migraine, not intractable, with status migrainosus |
| G43409 | Hemiplegic migraine, not intractable, without status migrainosus |
| G43411 | Hemiplegic migraine, intractable, with status migrainosus |
| G43419 | Hemiplegic migraine, intractable, without status migrainosus |
| G43501 | Persistent migraine aura without cerebral infarction, not intractable, with status migrainosus |
| G43509 | Persistent migraine aura without cerebral infarction, not intractable, without status migrainosus |
| G43511 | Persistent migraine aura without cerebral infarction, intractable, with status migrainosus |
| G43519 | Persistent migraine aura without cerebral infarction, intractable, without status migrainosus |
| G43601 | Persistent migraine aura with cerebral infarction, not intractable, with status migrainosus |
| G43609 | Persistent migraine aura with cerebral infarction, not intractable, without status migrainosus |
| G43611 | Persistent migraine aura with cerebral infarction, intractable, with status migrainosus |
| G43619 | Persistent migraine aura with cerebral infarction, intractable, without status migrainosus |
| G43701 | Chronic migraine without aura, not intractable, with status migrainosus |
| G43709 | Chronic migraine without aura, not intractable, without status migrainosus |
| G43711 | Chronic migraine without aura, intractable, with status migrainosus |
| G43719 | Chronic migraine without aura, intractable, without status migrainosus |
| G43801 | Other migraine, not intractable, with status migrainosus |
| G43809 | Other migraine, not intractable, without status migrainosus |
| G43811 | Other migraine, intractable, with status migrainosus |
| G43819 | Other migraine, intractable, without status migrainosus |
| G43821 | Menstrual migraine, not intractable, with status migrainosus |
| G43829 | Menstrual migraine, not intractable, without status migrainosus |
| G43831 | Menstrual migraine, intractable, with status migrainosus |
| G43839 | Menstrual migraine, intractable, without status migrainosus |
| G43901 | Migraine, unspecified, not intractable, with status migrainosus |
| G43909 | Migraine, unspecified, not intractable, without status migrainosus |
| G43911 | Migraine, unspecified, intractable, with status migrainosus |
| G43919 | Migraine, unspecified, intractable, without status migrainosus |
| G43A0 | Cyclical vomiting, in migraine, not intractable |
| G43A1 | Cyclical vomiting, in migraine, intractable |
| G43B0 | Ophthalmoplegic migraine, not intractable |
| G43B1 | Ophthalmoplegic migraine, intractable |
| G43C0 | Periodic headache syndromes in child or adult, not intractable |
| G43C1 | Periodic headache syndromes in child or adult, intractable |
| G43D0 | Abdominal migraine, not intractable |
| G43D1 | Abdominal migraine, intractable |
| G44001 | Cluster headache syndrome, unspecified, intractable |
| G44009 | Cluster headache syndrome, unspecified, not intractable |
| G44011 | Episodic cluster headache, intractable |
| G44019 | Episodic cluster headache, not intractable |
| G44021 | Chronic cluster headache, intractable |
| G44029 | Chronic cluster headache, not intractable |
| G44031 | Episodic paroxysmal hemicrania, intractable |
| G44039 | Episodic paroxysmal hemicrania, not intractable |
| G44041 | Chronic paroxysmal hemicrania, intractable |
| G44049 | Chronic paroxysmal hemicrania, not intractable |
| G44051 | Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), intractable |
| G44059 | Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), not intractable |
| G44091 | Other trigeminal autonomic cephalgias (TAC), intractable |
| G44099 | Other trigeminal autonomic cephalgias (TAC), not intractable |
| G441 | Vascular headache, not elsewhere classified |
| G44201 | Tension-type headache, unspecified, intractable |
| G44209 | Tension-type headache, unspecified, not intractable |
| G44211 | Episodic tension-type headache, intractable |
| G44219 | Episodic tension-type headache, not intractable |
| G44221 | Chronic tension-type headache, intractable |
| G44229 | Chronic tension-type headache, not intractable |
| G44301 | Post-traumatic headache, unspecified, intractable |
| G44309 | Post-traumatic headache, unspecified, not intractable |
| G44311 | Acute post-traumatic headache, intractable |
| G44319 | Acute post-traumatic headache, not intractable |
| G44321 | Chronic post-traumatic headache, intractable |
| G44329 | Chronic post-traumatic headache, not intractable |
| G4440 | Drug-induced headache, not elsewhere classified, not intractable |
| G4441 | Drug-induced headache, not elsewhere classified, intractable |
| G4451 | Hemicrania continua |
| G4452 | New daily persistent headache (NDPH) |
| G4453 | Primary thunderclap headache |
| G4459 | Other complicated headache syndrome |
| G4481 | Hypnic headache |
| G4482 | Headache associated with sexual activity |
| G4483 | Primary cough headache |
| G4484 | Primary exertional headache |
| G4485 | Primary stabbing headache |
| G4489 | Other headache syndrome |
| G450 | Vertebro-basilar artery syndrome |
| G451 | Carotid artery syndrome (hemispheric) |
| G452 | Multiple and bilateral precerebral artery syndromes |
| G454 | Transient global amnesia |
| G458 | Other transient cerebral ischemic attacks and related syndromes |
| G459 | Transient cerebral ischemic attack, unspecified |
| G460 | Middle cerebral artery syndrome |
| G461 | Anterior cerebral artery syndrome |
| G462 | Posterior cerebral artery syndrome |
| G463 | Brain stem stroke syndrome |
| G464 | Cerebellar stroke syndrome |
| G465 | Pure motor lacunar syndrome |
| G466 | Pure sensory lacunar syndrome |
| G467 | Other lacunar syndromes |
| G468 | Other vascular syndromes of brain in cerebrovascular diseases |
| G4720 | Circadian rhythm sleep disorder, unspecified type |
| G4721 | Circadian rhythm sleep disorder, delayed sleep phase type |
| G4722 | Circadian rhythm sleep disorder, advanced sleep phase type |
| G4723 | Circadian rhythm sleep disorder, irregular sleep wake type |
| G4724 | Circadian rhythm sleep disorder, free running type |
| G4725 | Circadian rhythm sleep disorder, jet lag type |
| G4726 | Circadian rhythm sleep disorder, shift work type |
| G4727 | Circadian rhythm sleep disorder in conditions classified elsewhere |
| G4729 | Other circadian rhythm sleep disorder |
| G4731 | Primary central sleep apnea |
| G4735 | Congenital central alveolar hypoventilation syndrome |
| G4737 | Central sleep apnea in conditions classified elsewhere |
| G47411 | Narcolepsy with cataplexy |
| G47419 | Narcolepsy without cataplexy |
| G47421 | Narcolepsy in conditions classified elsewhere with cataplexy |
| G47429 | Narcolepsy in conditions classified elsewhere without cataplexy |
| G4751 | Confusional arousals |
| G4753 | Recurrent isolated sleep paralysis |
| G4761 | Periodic limb movement disorder |
| G4762 | Sleep related leg cramps |
| G500 | Trigeminal neuralgia |
| G501 | Atypical facial pain |
| G508 | Other disorders of trigeminal nerve |
| G509 | Disorder of trigeminal nerve, unspecified |
| G510 | Bell's palsy |
| G511 | Geniculate ganglionitis |
| G512 | Melkersson's syndrome |
| G5131 | Clonic hemifacial spasm, right |
| G5132 | Clonic hemifacial spasm, left |
| G5133 | Clonic hemifacial spasm, bilateral |
| G5139 | Clonic hemifacial spasm, unspecified |
| G514 | Facial myokymia |
| G518 | Other disorders of facial nerve |
| G519 | Disorder of facial nerve, unspecified |
| G520 | Disorders of olfactory nerve |
| G521 | Disorders of glossopharyngeal nerve |
| G522 | Disorders of vagus nerve |
| G523 | Disorders of hypoglossal nerve |
| G527 | Disorders of multiple cranial nerves |
| G528 | Disorders of other specified cranial nerves |
| G529 | Cranial nerve disorder, unspecified |
| G53 | Cranial nerve disorders in diseases classified elsewhere |
| G540 | Brachial plexus disorders |
| G541 | Lumbosacral plexus disorders |
| G542 | Cervical root disorders, not elsewhere classified |
| G543 | Thoracic root disorders, not elsewhere classified |
| G544 | Lumbosacral root disorders, not elsewhere classified |
| G545 | Neuralgic amyotrophy |
| G546 | Phantom limb syndrome with pain |
| G547 | Phantom limb syndrome without pain |
| G548 | Other nerve root and plexus disorders |
| G549 | Nerve root and plexus disorder, unspecified |
| G55 | Nerve root and plexus compressions in diseases classified elsewhere |
| G5600 | Carpal tunnel syndrome, unspecified upper limb |
| G5601 | Carpal tunnel syndrome, right upper limb |
| G5602 | Carpal tunnel syndrome, left upper limb |
| G5603 | Carpal tunnel syndrome, bilateral upper limbs |
| G5610 | Other lesions of median nerve, unspecified upper limb |
| G5611 | Other lesions of median nerve, right upper limb |
| G5612 | Other lesions of median nerve, left upper limb |
| G5613 | Other lesions of median nerve, bilateral upper limbs |
| G5620 | Lesion of ulnar nerve, unspecified upper limb |
| G5621 | Lesion of ulnar nerve, right upper limb |
| G5622 | Lesion of ulnar nerve, left upper limb |
| G5623 | Lesion of ulnar nerve, bilateral upper limbs |
| G5630 | Lesion of radial nerve, unspecified upper limb |
| G5631 | Lesion of radial nerve, right upper limb |
| G5632 | Lesion of radial nerve, left upper limb |
| G5633 | Lesion of radial nerve, bilateral upper limbs |
| G5640 | Causalgia of unspecified upper limb |
| G5641 | Causalgia of right upper limb |
| G5642 | Causalgia of left upper limb |
| G5643 | Causalgia of bilateral upper limbs |
| G5680 | Other specified mononeuropathies of unspecified upper limb |
| G5681 | Other specified mononeuropathies of right upper limb |
| G5682 | Other specified mononeuropathies of left upper limb |
| G5683 | Other specified mononeuropathies of bilateral upper limbs |
| G5690 | Unspecified mononeuropathy of unspecified upper limb |
| G5691 | Unspecified mononeuropathy of right upper limb |
| G5692 | Unspecified mononeuropathy of left upper limb |
| G5693 | Unspecified mononeuropathy of bilateral upper limbs |
| G5700 | Lesion of sciatic nerve, unspecified lower limb |
| G5701 | Lesion of sciatic nerve, right lower limb |
| G5702 | Lesion of sciatic nerve, left lower limb |
| G5703 | Lesion of sciatic nerve, bilateral lower limbs |
| G5710 | Meralgia paresthetica, unspecified lower limb |
| G5711 | Meralgia paresthetica, right lower limb |
| G5712 | Meralgia paresthetica, left lower limb |
| G5713 | Meralgia paresthetica, bilateral lower limbs |
| G5720 | Lesion of femoral nerve, unspecified lower limb |
| G5721 | Lesion of femoral nerve, right lower limb |
| G5722 | Lesion of femoral nerve, left lower limb |
| G5723 | Lesion of femoral nerve, bilateral lower limbs |
| G5730 | Lesion of lateral popliteal nerve, unspecified lower limb |
| G5731 | Lesion of lateral popliteal nerve, right lower limb |
| G5732 | Lesion of lateral popliteal nerve, left lower limb |
| G5733 | Lesion of lateral popliteal nerve, bilateral lower limbs |
| G5740 | Lesion of medial popliteal nerve, unspecified lower limb |
| G5741 | Lesion of medial popliteal nerve, right lower limb |
| G5742 | Lesion of medial popliteal nerve, left lower limb |
| G5743 | Lesion of medial popliteal nerve, bilateral lower limbs |
| G5750 | Tarsal tunnel syndrome, unspecified lower limb |
| G5751 | Tarsal tunnel syndrome, right lower limb |
| G5752 | Tarsal tunnel syndrome, left lower limb |
| G5753 | Tarsal tunnel syndrome, bilateral lower limbs |
| G5760 | Lesion of plantar nerve, unspecified lower limb |
| G5761 | Lesion of plantar nerve, right lower limb |
| G5762 | Lesion of plantar nerve, left lower limb |
| G5763 | Lesion of plantar nerve, bilateral lower limbs |
| G5770 | Causalgia of unspecified lower limb |
| G5771 | Causalgia of right lower limb |
| G5772 | Causalgia of left lower limb |
| G5773 | Causalgia of bilateral lower limbs |
| G5780 | Other specified mononeuropathies of unspecified lower limb |
| G5781 | Other specified mononeuropathies of right lower limb |
| G5782 | Other specified mononeuropathies of left lower limb |
| G5783 | Other specified mononeuropathies of bilateral lower limbs |
| G5790 | Unspecified mononeuropathy of unspecified lower limb |
| G5791 | Unspecified mononeuropathy of right lower limb |
| G5792 | Unspecified mononeuropathy of left lower limb |
| G5793 | Unspecified mononeuropathy of bilateral lower limbs |
| G580 | Intercostal neuropathy |
| G587 | Mononeuritis multiplex |
| G588 | Other specified mononeuropathies |
| G589 | Mononeuropathy, unspecified |
| G59 | Mononeuropathy in diseases classified elsewhere |
| G600 | Hereditary motor and sensory neuropathy |
| G601 | Refsum's disease |
| G602 | Neuropathy in association with hereditary ataxia |
| G603 | Idiopathic progressive neuropathy |
| G608 | Other hereditary and idiopathic neuropathies |
| G609 | Hereditary and idiopathic neuropathy, unspecified |
| G610 | Guillain-Barre syndrome |
| G611 | Serum neuropathy |
| G6181 | Chronic inflammatory demyelinating polyneuritis |
| G6182 | Multifocal motor neuropathy |
| G6189 | Other inflammatory polyneuropathies |
| G619 | Inflammatory polyneuropathy, unspecified |
| G620 | Drug-induced polyneuropathy |
| G621 | Alcoholic polyneuropathy |
| G622 | Polyneuropathy due to other toxic agents |
| G6281 | Critical illness polyneuropathy |
| G6282 | Radiation-induced polyneuropathy |
| G6289 | Other specified polyneuropathies |
| G629 | Polyneuropathy, unspecified |
| G63 | Polyneuropathy in diseases classified elsewhere |
| G64 | Other disorders of peripheral nervous system |
| G650 | Sequelae of Guillain-Barre syndrome |
| G651 | Sequelae of other inflammatory polyneuropathy |
| G652 | Sequelae of toxic polyneuropathy |
| G7000 | Myasthenia gravis without (acute) exacerbation |
| G7001 | Myasthenia gravis with (acute) exacerbation |
| G701 | Toxic myoneural disorders |
| G702 | Congenital and developmental myasthenia |
| G7080 | Lambert-Eaton syndrome, unspecified |
| G7081 | Lambert-Eaton syndrome in disease classified elsewhere |
| G7089 | Other specified myoneural disorders |
| G709 | Myoneural disorder, unspecified |
| G7100 | Muscular dystrophy, unspecified |
| G7101 | Duchenne or Becker muscular dystrophy |
| G7102 | Facioscapulohumeral muscular dystrophy |
| G7109 | Other specified muscular dystrophies |
| G7111 | Myotonic muscular dystrophy |
| G7112 | Myotonia congenita |
| G7113 | Myotonic chondrodystrophy |
| G7114 | Drug induced myotonia |
| G7119 | Other specified myotonic disorders |
| G7120 | Congenital myopathy, unspecifed |
| G7121 | Nemaline myopathy |
| G71220 | X-linked myotubular myopathy |
| G71228 | Other centronuclear myopathy |
| G7129 | Other congenital myopathy |
| G713 | Mitochondrial myopathy, not elsewhere classified |
| G718 | Other primary disorders of muscles |
| G719 | Primary disorder of muscle, unspecified |
| G720 | Drug-induced myopathy |
| G721 | Alcoholic myopathy |
| G722 | Myopathy due to other toxic agents |
| G723 | Periodic paralysis |
| G7281 | Critical illness myopathy |
| G7289 | Other specified myopathies |
| G729 | Myopathy, unspecified |
| G731 | Lambert-Eaton syndrome in neoplastic disease |
| G733 | Myasthenic syndromes in other diseases classified elsewhere |
| G737 | Myopathy in diseases classified elsewhere |
| G800 | Spastic quadriplegic cerebral palsy |
| G801 | Spastic diplegic cerebral palsy |
| G802 | Spastic hemiplegic cerebral palsy |
| G803 | Athetoid cerebral palsy |
| G804 | Ataxic cerebral palsy |
| G808 | Other cerebral palsy |
| G809 | Cerebral palsy, unspecified |
| G8100 | Flaccid hemiplegia affecting unspecified side |
| G8101 | Flaccid hemiplegia affecting right dominant side |
| G8102 | Flaccid hemiplegia affecting left dominant side |
| G8103 | Flaccid hemiplegia affecting right nondominant side |
| G8104 | Flaccid hemiplegia affecting left nondominant side |
| G8110 | Spastic hemiplegia affecting unspecified side |
| G8111 | Spastic hemiplegia affecting right dominant side |
| G8112 | Spastic hemiplegia affecting left dominant side |
| G8113 | Spastic hemiplegia affecting right nondominant side |
| G8114 | Spastic hemiplegia affecting left nondominant side |
| G8190 | Hemiplegia, unspecified affecting unspecified side |
| G8191 | Hemiplegia, unspecified affecting right dominant side |
| G8192 | Hemiplegia, unspecified affecting left dominant side |
| G8193 | Hemiplegia, unspecified affecting right nondominant side |
| G8194 | Hemiplegia, unspecified affecting left nondominant side |
| G8220 | Paraplegia, unspecified |
| G8221 | Paraplegia, complete |
| G8222 | Paraplegia, incomplete |
| G8250 | Quadriplegia, unspecified |
| G8251 | Quadriplegia, C1-C4 complete |
| G8252 | Quadriplegia, C1-C4 incomplete |
| G8253 | Quadriplegia, C5-C7 complete |
| G8254 | Quadriplegia, C5-C7 incomplete |
| G830 | Diplegia of upper limbs |
| G8310 | Monoplegia of lower limb affecting unspecified side |
| G8311 | Monoplegia of lower limb affecting right dominant side |
| G8312 | Monoplegia of lower limb affecting left dominant side |
| G8313 | Monoplegia of lower limb affecting right nondominant side |
| G8314 | Monoplegia of lower limb affecting left nondominant side |
| G8320 | Monoplegia of upper limb affecting unspecified side |
| G8321 | Monoplegia of upper limb affecting right dominant side |
| G8322 | Monoplegia of upper limb affecting left dominant side |
| G8323 | Monoplegia of upper limb affecting right nondominant side |
| G8324 | Monoplegia of upper limb affecting left nondominant side |
| G8330 | Monoplegia, unspecified affecting unspecified side |
| G8331 | Monoplegia, unspecified affecting right dominant side |
| G8332 | Monoplegia, unspecified affecting left dominant side |
| G8333 | Monoplegia, unspecified affecting right nondominant side |
| G8334 | Monoplegia, unspecified affecting left nondominant side |
| G834 | Cauda equina syndrome |
| G835 | Locked-in state |
| G8381 | Brown-Sequard syndrome |
| G8382 | Anterior cord syndrome |
| G8383 | Posterior cord syndrome |
| G8384 | Todd's paralysis (postepileptic) |
| G8389 | Other specified paralytic syndromes |
| G839 | Paralytic syndrome, unspecified |
| G890 | Central pain syndrome |
| G8921 | Chronic pain due to trauma |
| G8922 | Chronic post-thoracotomy pain |
| G8928 | Other chronic postprocedural pain |
| G8929 | Other chronic pain |
| G894 | Chronic pain syndrome |
| G9001 | Carotid sinus syncope |
| G9009 | Other idiopathic peripheral autonomic neuropathy |
| G901 | Familial dysautonomia [Riley-Day] |
| G902 | Horner's syndrome |
| G903 | Multi-system degeneration of the autonomic nervous system |
| G904 | Autonomic dysreflexia |
| G9050 | Complex regional pain syndrome I, unspecified |
| G90511 | Complex regional pain syndrome I of right upper limb |
| G90512 | Complex regional pain syndrome I of left upper limb |
| G90513 | Complex regional pain syndrome I of upper limb, bilateral |
| G90519 | Complex regional pain syndrome I of unspecified upper limb |
| G90521 | Complex regional pain syndrome I of right lower limb |
| G90522 | Complex regional pain syndrome I of left lower limb |
| G90523 | Complex regional pain syndrome I of lower limb, bilateral |
| G90529 | Complex regional pain syndrome I of unspecified lower limb |
| G9059 | Complex regional pain syndrome I of other specified site |
| G908 | Other disorders of autonomic nervous system |
| G909 | Disorder of the autonomic nervous system, unspecified |
| G910 | Communicating hydrocephalus |
| G911 | Obstructive hydrocephalus |
| G912 | (Idiopathic) normal pressure hydrocephalus |
| G913 | Post-traumatic hydrocephalus, unspecified |
| G914 | Hydrocephalus in diseases classified elsewhere |
| G918 | Other hydrocephalus |
| G919 | Hydrocephalus, unspecified |
| G92 | Toxic encephalopathy |
| G930 | Cerebral cysts |
| G931 | Anoxic brain damage, not elsewhere classified |
| G932 | Benign intracranial hypertension |
| G9340 | Encephalopathy, unspecified |
| G9341 | Metabolic encephalopathy |
| G9349 | Other encephalopathy |
| G935 | Compression of brain |
| G936 | Cerebral edema |
| G937 | Reye's syndrome |
| G9381 | Temporal sclerosis |
| G9382 | Brain death |
| G9389 | Other specified disorders of brain |
| G939 | Disorder of brain, unspecified |
| G94 | Other disorders of brain in diseases classified elsewhere |
| G950 | Syringomyelia and syringobulbia |
| G9511 | Acute infarction of spinal cord (embolic) (nonembolic) |
| G9519 | Other vascular myelopathies |
| G9520 | Unspecified cord compression |
| G9529 | Other cord compression |
| G9581 | Conus medullaris syndrome |
| G9589 | Other specified diseases of spinal cord |
| G959 | Disease of spinal cord, unspecified |
| G9600 | Cerebrospinal fluid leak, unspecified |
| G9601 | Cranial cerebrospinal fluid leak, spontaneous |
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