MCMCB Pro
G40.50

G40.50Epileptic seizures related to external causes, not intractable

Non-billable headerICD-10-CM

G40.50 is a non-billable header ICD-10-CM code for epileptic seizures related to external causes, not intractable. It cannot be billed on its own: choose one of the more specific child codes below.

Risk adjustment

G40.50 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead G40.50

2 child codes. Green means billable.

Questions about G40.50

Is G40.50 a billable ICD-10-CM code?
No. G40.50 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does G40.50 sit in the tabular list?
Diseases of the nervous system (G00-G99), in the block Episodic and paroxysmal disorders (G40-G47).
ICD-10-CMFY2026-Apr· effective April 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.