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ICD-10-CM 2027 diagnosis code

W29.4XXSContact with nail gun, sequela

✓ Billable / specificPOA exemptRequires 7th character

W29.4XXS is a valid, billable ICD-10-CM code for contact with nail gun, sequela. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

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 W29.4XXS

W29.4XXS is the ICD-10-CM diagnosis code for contact with nail gun, sequela. 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 billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

The 7th character "S" means sequela: use it for complications or conditions that arise as a direct result of the original condition.

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.

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

Before ICD-10, this condition was coded in ICD-9-CM as E929.8 (late effects of other accidents).

7th character

Ssequela

Other encounter types for W29.4:

Notes that apply from higher levels

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

› 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.

ICD-9-CM equivalent

Converter →
  • E929.8Late effects of other accidentsapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

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 W29.4XXS

Is W29.4XXS billable?

Yes. W29.4XXS is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

What does the "S" at the end of W29.4XXS mean?

It is the 7th character for sequela. Per the official guidelines, use it for complications or conditions that arise as a direct result of the original condition.

Can W29.4XXS be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict W29.4XXS as a principal diagnosis.

Is W29.4XXS a CC or MCC?

No. W29.4XXS is neither a CC nor an MCC under MS-DRG v44.0.

What is the ICD-9 code for W29.4XXS?

The CMS General Equivalence Mappings map W29.4XXS to ICD-9-CM E929.8.