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ICD-10-CM 2027 diagnosis code

W18.31XAFall on same level due to stepping on an object, initial encounter

✓ Billable / specificRequires 7th character

W18.31XA is a valid, billable ICD-10-CM code for fall on same level due to stepping on an object, initial encounter. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Fall on same level due to stepping on an object, 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 W18.31XA

W18.31XA is the ICD-10-CM diagnosis code for fall on same level due to stepping on an object, initial encounter. It belongs to category W18 (other slipping, tripping and stumbling and falls), 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 E888.8 (other fall).

7th character

Ainitial encounter

Other encounter types for W18.31:

Notes that apply from higher levels

Instructions written at a parent level also apply to W18.31XA.

› From W18.31 Fall on same level due to stepping on an object
Excludes1
  • slipping, tripping and stumbling without fall due to stepping on animal (W18.41)

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

ICD-9-CM equivalent

Converter →

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 W18.31XA

Is W18.31XA billable?

Yes. W18.31XA 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 W18.31XA 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 W18.31XA be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict W18.31XA as a principal diagnosis.

Is W18.31XA a CC or MCC?

No. W18.31XA is neither a CC nor an MCC under MS-DRG v44.0.

What is the ICD-9 code for W18.31XA?

The CMS General Equivalence Mappings map W18.31XA to ICD-9-CM E888.8.