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ICD-10-CM 2027 diagnosis code

W29.4Contact with nail gun

Not billable — use a more specific codeRequires 7th character

W29.4 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About W29.4

W29.4 is the ICD-10-CM diagnosis code for contact with nail gun. It belongs to category W29 (contact with other powered hand tools and household machinery), block W20-W49 (exposure to inanimate mechanical forces) and chapter 20 (external causes of morbidity). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within W29 (contact with other powered hand tools and household machinery), W29.4 is specifically for contact with nail gun. Related codes cover powered kitchen appliance (W29.0), electric knife (W29.1), other powered household machinery (W29.2), powered garden and outdoor hand tools and machinery (W29.3) and other powered hand tools and household machinery (W29.8).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

7th character

The appropriate 7th character is to be added to each code from category W29

Notes that apply from higher levels

Instructions written at a parent level also apply to W29.4.

› From W29 Contact with other powered hand tools and household machinery
Excludes1
  • contact with commercial machinery (W31.82)
  • contact with hot household appliance (X15)
  • contact with nonpowered hand tool (W27.-)
  • exposure to electric current (W86)

Broader instructions also apply from W20-W49 Exposure to inanimate mechanical forces and Chapter 20: External causes of morbidity.

Alphabetic index entries

3 entries

Terms in the official ICD-10-CM index that lead to W29.4.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about W29.4

Is W29.4 billable?

No. W29.4 is a header code. Report one of its more specific subcodes instead.