Is W29.3 a billable ICD-10-CM code?

No. W29.3 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does W29.3 sit in the tabular list?

External causes of morbidity (V00-Y99), in the block Exposure to inanimate mechanical forces (W20-W49).

What cannot be coded together with W29.3?

W29.3 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above W29.3 (W29) and apply to it just the same.

W29.3

W29.3 — Contact with powered garden and outdoor hand tools and machinery

Non-billable headerICD-10-CM

W29.3 is a non-billable header ICD-10-CM code for contact with powered garden and outdoor hand tools and machinery. 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

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

contact with powered lawn mower (W28)

Inclusion terms

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

Contact with chainsaw
Contact with edger
Contact with garden cultivator (tiller)
Contact with hedge trimmer
Contact with other powered garden tool

Excludes1 inherited from the categories above W29.3

These are not written on W29.3, but they bind it: a note on a category applies to every code beneath it. Billing W29.3 with anything listed here is a denial.

Written on W29 — Contact with other powered hand tools and household machinery

contact with commercial machinery (W31.82)
contact with hot household appliance (X15)
contact with nonpowered hand tool (W27.-)
exposure to electric current (W86)

Other codes that can never be billed with W29.3

These codes carry an Excludes1 note pointing at W29.3. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading W29.3 alone.

W31.82Contact with other commercial machinery
W31.82XAContact with other commercial machinery, initial encounter
W31.82XDContact with other commercial machinery, subsequent encounter
W31.82XSContact with other commercial machinery, sequela
X15Contact with hot household appliances
X16Contact with hot heating appliances, radiators and pipes
X16.XXXAContact with hot heating appliances, radiators and pipes, initial encounter
X16.XXXDContact with hot heating appliances, radiators and pipes, subsequent encounter

Risk adjustment

W29.3 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 W29.3 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 W29.3.

Contact›with›hedge-trimmer(powered)
Contact›with›chain›saw
Contact›with›garden›cultivator(powered)
Contact›with›powered›garden cultivator
Contact›with›saw›chain
Contact›with›tool›powered›chainsaw
Contact›with›tool›powered›edger
Contact›with›tool›powered›garden tool
Contact›with›tool›powered›hedge trimmer
Contact›with›tool›powered›rototiller

Code history

W29.3 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead W29.3

3 child codes. Green means billable.

Related codes at this level

Codes that share W29. If W29.3 is not quite right, the correct code is usually one of these.

Questions about W29.3

Is W29.3 a billable ICD-10-CM code?: No. W29.3 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does W29.3 sit in the tabular list?: External causes of morbidity (V00-Y99), in the block Exposure to inanimate mechanical forces (W20-W49).
What cannot be coded together with W29.3?: W29.3 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above W29.3 (W29) and apply to it just the same.