Skip to content
Dx

ICD-10-CM 2027 diagnosis code

W10.9XXAFall (on) (from) unspecified stairs and steps, initial encounter

✓ Billable / specificRequires 7th character

W10.9XXA is a valid, billable ICD-10-CM code for fall (on) (from) unspecified stairs and steps, initial encounter. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Fall (on) (from) unspecified stairs and steps, 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 W10.9XXA

W10.9XXA is the ICD-10-CM diagnosis code for fall (on) (from) unspecified stairs and steps, initial encounter. It belongs to category W10 (fall on and from stairs and steps), 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 E880.9 (accidental fall on or from other stairs or steps).

7th character

Ainitial encounter

Other encounter types for W10.9:

Notes that apply from higher levels

Instructions written at a parent level also apply to W10.9XXA.

› From W10 Fall on and from stairs and steps
Excludes1
  • Fall from stairs and steps due to ice and snow (W00.1)

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

ICD-9-CM equivalent

Converter →
  • E880.9Accidental fall on or from other stairs or stepsapproximate

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 W10.9XXA

Is W10.9XXA billable?

Yes. W10.9XXA 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 W10.9XXA 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 W10.9XXA be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict W10.9XXA as a principal diagnosis.

Is W10.9XXA a CC or MCC?

No. W10.9XXA is neither a CC nor an MCC under MS-DRG v44.0.

What is the ICD-9 code for W10.9XXA?

The CMS General Equivalence Mappings map W10.9XXA to ICD-9-CM E880.9.