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ICD-10-CM 2027 diagnosis code

W00.1XXAFall from stairs and steps due to ice and snow, initial encounter

✓ Billable / specificRequires 7th character

W00.1XXA is a valid, billable ICD-10-CM code for fall from stairs and steps due to ice and snow, initial encounter. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Fall from stairs and steps due to ice and snow, init encntr

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 W00.1XXA

W00.1XXA is the ICD-10-CM diagnosis code for fall from stairs and steps due to ice and snow, initial encounter. It belongs to category W00 (fall due to ice and snow), block W00-W19 (slipping, tripping, stumbling and falls) 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 "A" means initial encounter: use it while the patient is receiving active treatment for the condition.

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

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 E884.9 (other accidental fall from one level to another).

7th character

Ainitial encounter

Other encounter types for W00.1:

Notes that apply from higher levels

Instructions written at a parent level also apply to W00.1XXA.

› From W00 Fall due to ice and snow
Includes
  • pedestrian on foot falling (slipping) on ice and snow
Excludes1
  • fall on (from) ice and snow involving pedestrian conveyance (V00.-)
  • fall from stairs and steps not due to ice and snow (W10.-)

Broader instructions also apply from W00-W19 Slipping, tripping, stumbling and falls and Chapter 20: External causes of morbidity.

ICD-9-CM equivalent

Converter →
  • E884.9Other accidental fall from one level to anotherapproximate

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 W00.1XXA

Is W00.1XXA billable?

Yes. W00.1XXA is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

What does the "A" at the end of W00.1XXA mean?

It is the 7th character for initial encounter. Per the official guidelines, use it while the patient is receiving active treatment for the condition.

Can W00.1XXA be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict W00.1XXA as a principal diagnosis.

Is W00.1XXA a CC or MCC?

No. W00.1XXA is neither a CC nor an MCC under MS-DRG v44.0.

What is the ICD-9 code for W00.1XXA?

The CMS General Equivalence Mappings map W00.1XXA to ICD-9-CM E884.9.