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ALL MEDICAL CODES IN CATEGORY G40-G47 (Episodic and paroxysmal disorders)

2025 ICD-10-CM code G40.30

Generalized idiopathic epilepsy and epileptic syndromes, not intractable. This refers to a group of epileptic disorders caused by abnormal electrical activity on both sides of the brain, without structural abnormalities, and responsive to treatment.

2025 ICD-10-CM code G43.51

Intractable persistent migraine aura without cerebral infarction.

2025 ICD-10-CM code G45.0

Vertebrobasilar artery syndrome is a neurological condition characterized by brief episodes of reduced blood flow in the vertebral and basilar arteries, leading to various neurological symptoms.

2025 ICD-10-CM code G43.D

Abdominal migraine is a type of migraine characterized by recurring episodes of moderate to severe abdominal pain, typically lasting 1-72 hours, without head pain.

2025 ICD-10-CM code G40.10

Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable.

2025 ICD-10-CM code G40.109

Focal (partial) symptomatic epilepsy with simple partial seizures, responsive to treatment, without status epilepticus.

2025 ICD-10-CM code G43.101

Migraine with aura, not intractable, with status migrainosus.

2025 ICD-10-CM code G40.21

Intractable focal (partial) epilepsy with complex partial seizures.

2025 ICD-10-CM code G40.11

Intractable localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures.

2025 ICD-10-CM code G43.B

Ophthalmoplegic migraine, a rare neurological condition involving headache and temporary eye muscle weakness or paralysis.

2025 ICD-10-CM code G40.802

Other epilepsy, not intractable, without status epilepticus.

2025 ICD-10-CM code G47.13

Recurrent hypersomnia, including Kleine-Levin syndrome and menstrual-related hypersomnia.

2025 ICD-10-CM code G44.091

Other intractable trigeminal autonomic cephalgias (TACs) are headache syndromes that don't respond to treatment. They cause one-sided head or facial pain, along with symptoms like tearing, eye redness, or a droopy eyelid.

2025 ICD-10-CM code G43.A1

Intractable cyclical vomiting associated with migraine.

2025 ICD-10-CM code G40.311

Intractable generalized idiopathic epilepsy and epileptic syndromes with status epilepticus.

2025 ICD-10-CM code G40.209

Focal (partial) symptomatic epilepsy with complex partial seizures, not intractable, without status epilepticus. This signifies seizures originating from a specific brain area, causing altered consciousness, but responsive to treatment and not prolonged.

2025 ICD-10-CM code G43.9

Migraine, unspecified. This code is used when the provider doesn't specify the type of migraine (with or without aura, intractable or not intractable, with or without status migrainosus).

2025 ICD-10-CM code G47.10

Hypersomnia, unspecified. This condition refers to excessive daytime sleepiness despite adequate sleep duration.

2025 ICD-10-CM code G40.3

Generalized idiopathic epilepsy and epileptic syndromes.Consider also MERRF syndrome (E88.42), if applicable.

2025 ICD-10-CM code G47.61

Periodic limb movement disorder is a sleep disorder characterized by repetitive movements of the lower limbs during sleep, typically occurring every 20 to 40 seconds and lasting from a few minutes to several hours.

2025 ICD-10-CM code G43.01

Intractable migraine without aura. This refers to a severe, recurrent headache that is typically one-sided, often accompanied by nausea, vomiting, and sensitivity to light.It is not preceded by aura and is poorly controlled by standard treatments.

2025 ICD-10-CM code G40.B1

Intractable juvenile myoclonic epilepsy. This is a seizure disorder unresponsive to treatment, typically starting between ages 12 and 18, characterized by uncontrolled muscle jerks and rigidity.

2025 ICD-10-CM code G43.11

Intractable migraine with aura is a severe, recurring headache preceded by visual or sensory symptoms (aura), unresponsive to treatment.

2025 ICD-10-CM code G44.011

Intractable episodic cluster headache; severe, recurring headaches in or around one eye, unresponsive to treatment.

2025 ICD-10-CM code G40.001

Focal (partial) idiopathic epilepsy with localized onset seizures, not intractable, with status epilepticus.

2025 ICD-10-CM code G40.811

Lennox-Gastaut syndrome, not intractable, with status epilepticus.

2025 ICD-10-CM code G43.61

Persistent migraine aura with cerebral infarction, intractable. This signifies a persistent aura following a migraine, accompanied by a cerebral infarction (stroke), and resistant to treatment.

2025 ICD-10-CM code G43.839

Intractable menstrual migraine without status migrainosus. This refers to a severe, treatment-resistant migraine headache specifically associated with menstruation, lasting less than 72 hours.

2025 ICD-10-CM code G43.40

Hemiplegic migraine, not intractable. This is a severe but treatable migraine variant characterized by temporary hemiplegia (paralysis on one side of the body) along with other aura symptoms that precede the headache.

2025 ICD-10-CM code G40.A

Absence epileptic syndrome. This encompasses childhood absence epilepsy (pyknolepsy), juvenile absence epilepsy, and other unspecified absence epileptic syndromes.

2025 ICD-10-CM code G40.A11

Intractable absence epileptic syndrome with status epilepticus. This involves seizures characterized by staring spells or altered consciousness occurring so frequently that there appears to be no interval between them, and are unresponsive to treatment.

2025 ICD-10-CM code G43.821

Menstrual migraine, not intractable, with status migrainosus.

2025 ICD-10-CM code G47.2

Circadian rhythm sleep disorder is a disruption of the normal sleep-wake cycle due to a mismatch between internal body clock and the external environment.

2025 ICD-10-CM code G40.50

Epileptic seizures related to external causes, not intractable.

2025 ICD-10-CM code G43.00

Migraine without aura, not intractable. This refers to a severe, recurrent headache that is typically one-sided and pulsating or throbbing, often accompanied by nausea, vomiting, and sensitivity to light, but not preceded by aura and responsive to treatment.

2025 ICD-10-CM code G40.801

Other epilepsy, not intractable, with status epilepticus. This refers to seizures lasting longer than 5 minutes or occurring so close together that the patient has no time to recover, but can be controlled with treatment.The epilepsy is not classified as focal or generalized.

2025 ICD-10-CM code G40.B09

Juvenile myoclonic epilepsy, not intractable, without status epilepticus

2025 ICD-10-CM code G40.909

Unspecified epilepsy, not intractable, without status epilepticus. This refers to recurrent seizures that are controlled with treatment and last less than 5 minutes.

2025 ICD-10-CM code G47.421

Narcolepsy with cataplexy in the presence of another condition.

2025 ICD-10-CM code G43.C

Periodic headache syndromes in a child or adult.

2025 ICD-10-CM code G40.31

Intractable generalized idiopathic epilepsy and epileptic syndromes.

2025 ICD-10-CM code G40.00

Focal epilepsy with localized onset seizures, of unknown cause, and responsive to treatment.

2025 ICD-10-CM code G47.35

Congenital central alveolar hypoventilation syndrome. This is a rare genetic disorder characterized by slow or shallow breathing, especially during sleep, leading to low blood oxygen and high blood carbon dioxide levels.

2025 ICD-10-CM code G40.219

Intractable focal epilepsy with complex partial seizures, but without status epilepticus.

2025 ICD-10-CM code G44.40

Drug-induced headache, not elsewhere classified, not intractable. This refers to a headache caused by overuse of certain drugs, responsive to treatment.

2025 ICD-10-CM code G40.804

Other epilepsy, intractable, without status epilepticus. This condition involves seizures that are not controlled with treatment and do not last longer than 5 minutes.

2025 ICD-10-CM code G40.8

Other epilepsy and recurrent seizures. This includes epilepsies and epileptic syndromes that are undetermined as to whether they are focal or generalized, and Landau-Kleffner syndrome.

2025 ICD-10-CM code G40.501

Epileptic seizures related to external causes, not intractable, with status epilepticus.

2025 ICD-10-CM code G43.5

Persistent migraine aura without cerebral infarction. This condition involves aura symptoms lasting for more than a week without evidence of stroke on brain imaging.

2025 ICD-10-CM code G40.40

Other generalized epilepsy and epileptic syndromes, not intractable. This refers to a group of epileptic disorders where seizures are caused by abnormal electrical activity on both sides of the brain, without structural brain abnormalities, and are controllable with treatment.