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ALL MEDICAL CODES IN CATEGORY G40-G47

2025 ICD-10-CM code G40.834

Dravet syndrome, intractable, without status epilepticus.

2025 ICD-10-CM code G43.B0

Ophthalmoplegic migraine without aura, not intractable.

2025 ICD-10-CM code G40.1

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

2025 ICD-10-CM code G40.81

Lennox-Gastaut syndrome. A severe form of epilepsy with multiple seizure types starting in early childhood, typically before age 4.

2025 ICD-10-CM code G45.2

Multiple and bilateral precerebral artery syndromes.

2025 ICD-10-CM code G43.009

Migraine without aura, not intractable, without status migrainosus. This refers to a severe, recurrent, typically one-sided headache, often pulsating or throbbing, associated with nausea, vomiting, and light sensitivity. It lasts less than 72 hours and responds to treatment.

2025 ICD-10-CM code G40.42

Cyclin-Dependent Kinase-Like 5 Deficiency Disorder (CDD). Use additional code to identify associated manifestations (if known), such as cortical blindness (H47.61-), global developmental delay (F88).

2025 ICD-10-CM code G44.00

Cluster headache syndrome, unspecified.

2025 ICD-10-CM code G40.83

Dravet syndrome. Also known as polymorphic epilepsy in infancy (PMEI) or severe myoclonic epilepsy in infancy (SMEI).

2025 ICD-10-CM code G40.211

Intractable, localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, with status epilepticus.

2025 ICD-10-CM code G43.819

Other intractable migraine, without status migrainosus. This refers to a severe, persistent migraine lasting less than 72 hours that doesn't respond to standard treatments.

2025 ICD-10-CM code G46.0

Middle cerebral artery (MCA) syndrome.It involves the loss of blood flow to portions of the brain supplied by the MCA.

2025 ICD-10-CM code G40.509

Epileptic seizures related to external causes, not intractable, without status epilepticus.

2025 ICD-10-CM code G43.1

Migraine with aura

2025 ICD-10-CM code G43.701

Chronic migraine without aura, not intractable, with status migrainosus. This signifies a persistent migraine lasting over 72 hours, responsive to treatment, but not preceded by sensory warnings like aura.

2025 ICD-10-CM code G43.019

Intractable migraine without aura and without status migrainosus. This refers to a severe, recurrent, throbbing headache, typically one-sided, often accompanied by nausea, vomiting, and light sensitivity, lasting less than 72 hours, without preceding sensory disturbances, and poorly responsive to treatment.

2025 ICD-10-CM code G44.52

New daily persistent headache (NDPH) is a primary headache disorder characterized by abrupt onset of head pain, reaching persistent and unremitting status within 24 hours, and lasting for over three months.

2025 ICD-10-CM code G40.821

Epileptic spasms, not intractable, with status epilepticus. This refers to a prolonged state of repeated epileptic seizures, where the patient doesn't regain consciousness between episodes.The seizures are characterized by muscle spasms and are responsive to treatment.

2025 ICD-10-CM code G47

Sleep disorders

2025 ICD-10-CM code G40.A1

Intractable absence epileptic syndrome. This condition involves seizures characterized by staring spells or altered consciousness, resistant to treatment.

2025 ICD-10-CM code G40.A09

Absence epileptic syndrome, not intractable, without status epilepticus. This signifies a form of epilepsy marked by brief staring spells or altered consciousness, manageable with treatment and not involving prolonged seizures (status epilepticus).

2025 ICD-10-CM code G40.101

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

2025 ICD-10-CM code G40.82

Epileptic spasms, also known as infantile spasms, are a type of seizure primarily affecting infants.

2025 ICD-10-CM code G40.119

Intractable focal (partial) symptomatic epilepsy with simple partial seizures, without status epilepticus.

2025 ICD-10-CM code G40.A01

Absence epileptic syndrome, not intractable, with status epilepticus. This refers to a type of seizure where there's a brief loss and return of consciousness, occurring so frequently that there's almost no break between them, but responsive to treatment.