W29.1 — Contact with electric knife
W29.1 is a non-billable header ICD-10-CM code for contact with electric knife. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category W29
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Other codes that can never be billed with W29.1
These codes carry an Excludes1 note pointing at W29.1. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading W29.1 alone.
Risk adjustment
W29.1 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.
How W29.1 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to W29.1.
- Contact›with›electric›knife
- Contact›with›knife›electric
- Contact›with›tool›powered›electric knife
Code to one of these instead W29.1
3 child codes. Green means billable.
Related codes at this level
Codes that share W29. If W29.1 is not quite right, the correct code is usually one of these.
Questions about W29.1
- Is W29.1 a billable ICD-10-CM code?
- No. W29.1 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does W29.1 sit in the tabular list?
- External causes of morbidity (V00-Y99), in the block Exposure to inanimate mechanical forces (W20-W49).