Is K40.4 a billable ICD-10-CM code?

No. K40.4 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does K40.4 sit in the tabular list?

Diseases of the digestive system (K00-K95), in the block Hernia (K40-K46).

K40.4

K40.4 — Unilateral inguinal hernia, with gangrene

Non-billable headerICD-10-CM

K40.4 is a non-billable header ICD-10-CM code for unilateral inguinal hernia, with gangrene. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with K40.4

These codes carry an Excludes1 note pointing at K40.4. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading K40.4 alone.

I96Gangrene, not elsewhere classified

Risk adjustment

K40.4 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 K40.4

2 child codes. Green means billable.

Related codes at this level

Codes that share K40. If K40.4 is not quite right, the correct code is usually one of these.

Questions about K40.4

Is K40.4 a billable ICD-10-CM code?: No. K40.4 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does K40.4 sit in the tabular list?: Diseases of the digestive system (K00-K95), in the block Hernia (K40-K46).