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ICD-10-CM · FY 2026 APRIL UPDATE

G40.8

Other epilepsy and recurrent seizures

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
G40.80Other epilepsyCategory
G40.801Other epilepsy, not intractable, with status epilepticusBillable
G40.802Other epilepsy, not intractable, without status epilepticusBillable
G40.803Other epilepsy, intractable, with status epilepticusBillable
G40.804Other epilepsy, intractable, without status epilepticusBillable
G40.81Lennox-Gastaut syndromeCategory
G40.811Lennox-Gastaut syndrome, not intractable, with status epilepticusBillable
G40.812Lennox-Gastaut syndrome, not intractable, without status epilepticusBillable
G40.813Lennox-Gastaut syndrome, intractable, with status epilepticusBillable
G40.814Lennox-Gastaut syndrome, intractable, without status epilepticusBillable
G40.82Epileptic spasmsCategory
G40.821Epileptic spasms, not intractable, with status epilepticusBillable
G40.822Epileptic spasms, not intractable, without status epilepticusBillable
G40.823Epileptic spasms, intractable, with status epilepticusBillable
G40.824Epileptic spasms, intractable, without status epilepticusBillable
G40.83Dravet syndromeCategory
G40.833Dravet syndrome, intractable, with status epilepticusBillable
G40.834Dravet syndrome, intractable, without status epilepticusBillable
G40.84KCNQ2-related epilepsyCategory
G40.841KCNQ2-related epilepsy, not intractable, with status epilepticusBillable
G40.842KCNQ2-related epilepsy, not intractable, without status epilepticusBillable
G40.843KCNQ2-related epilepsy, intractable, with status epilepticusBillable
G40.844KCNQ2-related epilepsy, intractable, without status epilepticusBillable
G40.89Other seizuresBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.