MCMedicalCodingSoftware
G40.40

G40.40: Other generalized epilepsy and epileptic syndromes, not intractable

Non-billable headerICD-10-CM

G40.40 is a non-billable header ICD-10-CM code for other generalized epilepsy and epileptic syndromes, not intractable. It cannot be billed on its own: choose one of the more specific child codes below.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

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

Excludes1 inherited from the categories above G40.40

A category’s note binds every code beneath it.

Written on G40: Epilepsy and recurrent seizures

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

Excludes2 inherited from the categories above G40.40

Not part of this code, but both may be coded when both are present.

Written on G40: Epilepsy and recurrent seizures

Other codes that can never be billed with G40.40

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • G25.3Myoclonus
  • R56Convulsions, not elsewhere classified
  • R56.1Post traumatic seizures

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead G40.40

2 child codes. Green means billable.

Other codes under G40.4

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.