2027 ICD-10-CM Diagnosis Code W28Contact with powered lawn mower

ICD-10-CM Codes›V01–Y99›W20-W49›W28

ICD-10-CM W28
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

W28 is a non-billable ICD-10-CM category code for contact with powered lawn mower, so it cannot be submitted on claims. Use a more specific code from this category instead, such as W28.XXXA, W28.XXXD, and W28.XXXS.

Code Identity

ICD-10-CM Code
W28
Billable Status
No — Non-Billable Category
Code Describes
Contact with powered lawn mower
Short Description
Contact with powered lawn mower
Same as the full description in the CMS dataset.
Chapter
W20-W49
Exposure to inanimate mechanical forces

Code Classification

ChapterV01–Y99External causes of morbidity and mortality
SectionW20-W49Exposure to inanimate mechanical forces
CategoryW28Contact with powered lawn mower
This CodeW28Contact with powered lawn mower

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to W28: its own notes plus those printed at block W20-W49 and Chapter 20. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Powered lawn mower (commercial) (residential)

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

On W28 itself
  • contact with nonpowered lawn mower (W27.1)
From Block W20-W49 Exposure to inanimate mechanical forces applies to 510 codes
  • assault (X92-Y09)
  • contact or collision with animals or persons (W50-W64)
  • exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)
  • intentional self-harm (X71-X83)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

  • exposure to electric current (W86.-)

Notes

General instructions on how these codes are used.

From Chapter 20 (V00-Y99) External causes of morbidity and mortality applies to 7,461 codes
  • This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

  • The appropriate 7th character is to be added to code W28
Values for category W28 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name W28, its category, or a range that includes it.

Excludes1 5

These codes carry an Excludes1 note naming W28: they are not reported together with it, unless the two conditions are unrelated.

  • Block W00-W19 Slipping, tripping, stumbling and falls
    fall (in) (from) machinery (in operation) (W28-W31)
  • W20 Struck by thrown, projected or falling object
    falling object in machinery accident (W24, W28-W31)
  • W23 Caught, crushed, jammed or pinched in or between objects
    injury caused by machinery (W28-W31)
  • W29.3 Contact with powered garden and outdoor hand tools and machinery
    contact with powered lawn mower (W28)
  • W31.82 Contact with other commercial machinery
    contact with powered lawn mower (W28)

Excludes2 1

These codes carry an Excludes2 note naming W28: its condition is not part of those codes, and both may be reported when the patient has both.

  • W45 Foreign body or object entering through skin
    contact with hand tools (nonpowered) (powered) (W27-W29) names W27-W29, which includes this code

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index; each main term links to its index entry.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About W28Overview

What is the ICD-10 code for contact with powered lawn mower?

W28 is the ICD-10-CM category for contact with powered lawn mower, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is W28 (Contact with powered lawn mower) a billable code?

No. This is a category header that groups the codes for contact with powered lawn mower, and headers cannot be submitted on claims. Claims for contact with powered lawn mower need a more specific code from this category, such as W28.XXXA, W28.XXXD, and W28.XXXS.

Can W28 be reported with W27.1?

Not as a rule. The Excludes1 note on W28 lists "contact with nonpowered lawn mower (W27.1)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).