ICD-10-CM 2027 diagnosis code
W18.43XASlipping, tripping and stumbling without falling due to stepping from one level to another, initial encounter
W18.43XA is a valid, billable ICD-10-CM code for slipping, tripping and stumbling without falling due to stepping from one level to another, initial encounter. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Slip/trip w/o fall d/t step from one level to another, init
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 W18.43XA
W18.43XA is the ICD-10-CM diagnosis code for slipping, tripping and stumbling without falling due to stepping from one level to another, 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 E885.9 (fall from other slipping, tripping, or stumbling).
7th character
Ainitial encounter
Other encounter types for W18.43:
Notes that apply from higher levels
Instructions written at a parent level also apply to W18.43XA.
› From W18.4 Slipping, tripping and stumbling without falling
- collision with another person without fall (W51)
Broader instructions also apply from W00-W19 Slipping, tripping, stumbling and falls and Chapter 20: External causes of morbidity.
ICD-9-CM equivalent
Converter →- E885.9Fall from other slipping, tripping, or stumblingapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about W18.43XA
Is W18.43XA billable?
- Yes. W18.43XA 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 W18.43XA 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 W18.43XA be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict W18.43XA as a principal diagnosis.
Is W18.43XA a CC or MCC?
- No. W18.43XA is neither a CC nor an MCC under MS-DRG v44.0.