G40.40

Other generalized epilepsy and epileptic syndromes, not intractable

Header / non-billable

This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · G40.40
Synonyms

Other generalized epilepsy and epileptic syndromes without intractability Other generalized epilepsy and epileptic syndromes NOS

Inherited from G40.4Other generalized epilepsy and epileptic syndromes
Synonyms

Epilepsy with grand mal seizures on awakening Epilepsy with myoclonic absences Epilepsy with myoclonic-astatic seizures Grand mal seizure NOS Nonspecific atonic epileptic seizures Nonspecific clonic epileptic seizures Nonspecific myoclonic epileptic seizures Nonspecific tonic epileptic seizures Nonspecific tonic-clonic epileptic seizures Symptomatic early myoclonic encephalopathy

Inherited from G40Epilepsy and recurrent seizures
Excludes 1

conversion disorder with seizures (F44.5) convulsions NOS (R56.9) post traumatic seizures (R56.1) seizure (convulsive) NOS (R56.9) seizure of newborn (P90)

Excludes 2

hippocampal sclerosis (G93.81) mesial temporal sclerosis (G93.81) temporal sclerosis (G93.81) Todd's paralysis (G83.84)

Note

the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled

Inherited from chapter 6Diseases of the nervous system
Excludes 2

certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) injury, poisoning and certain other consequences of external causes (S00-T88) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Official Guidelines for G40.40

FY 2026 ›