Fall on and from stairs and steps (W10) ICD-10-CM
The W10 code range covers fall on and from stairs and steps with 21 ICD-10-CM diagnosis codes. 15 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- Fall from stairs and steps due to ice and snow W00.1
7th Character Note
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
- The appropriate 7th character is to be added to each code from category W10
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
- A - initial encounter
- D - subsequent encounter
- S - sequela
Codes in the W10 Range 21 codes · 15 billable
- W10 Fall on and from stairs and stepsNon-billable
- W10.0 Fall (on)(from) escalatorNon-billable
- W10.0XXA Fall (on)(from) escalator, initial encounter
- W10.0XXD Fall (on)(from) escalator, subsequent encounter
- W10.0XXS Fall (on)(from) escalator, sequela
- W10.1 Fall (on)(from) sidewalk curbNon-billable
- W10.1XXA Fall (on)(from) sidewalk curb, initial encounter
- W10.1XXD Fall (on)(from) sidewalk curb, subsequent encounter
- W10.1XXS Fall (on)(from) sidewalk curb, sequela
- W10.2 Fall (on)(from) inclineNon-billable
- W10.2XXA Fall (on)(from) incline, initial encounter
- W10.2XXD Fall (on)(from) incline, subsequent encounter
- W10.2XXS Fall (on)(from) incline, sequela
- W10.8 Fall (on) (from) other stairs and stepsNon-billable
- W10.8XXA Fall (on) (from) other stairs and steps, initial encounter
- W10.8XXD Fall (on) (from) other stairs and steps, subsequent encounter
- W10.8XXS Fall (on) (from) other stairs and steps, sequela
- W10.9 Fall (on) (from) unspecified stairs and stepsNon-billable
- W10.9XXA Fall (on) (from) unspecified stairs and steps, initial encounter
- W10.9XXD Fall (on) (from) unspecified stairs and steps, subsequent encounter
- W10.9XXS Fall (on) (from) unspecified stairs and steps, sequela
About the W10 Code Range
The W10 ICD-10 codes identify falls occurring on or from stairs and steps, including related locations such as escalators, sidewalk curbs, and inclines. These codes specify the accident’s exact setting and the timing of medical encounters, like initial treatment or follow-ups.
These codes cover incidents like falling on or off an escalator (W10.0), sidewalk curb (W10.1), incline (W10.2), and other stairs (W10.8). When the type of stairs isn’t specified, W10.9 is used—with synonyms like "fall from stairs" or "fall on steps" helping clarify coding. Each has extensions indicating if the encounter is initial (XXA), subsequent (XXD), or related to sequelae (XXS). These codes assist healthcare providers and coders in accurately documenting injuries from falls on stairs or steps, making the ICD-10 code for fall on and from stairs and steps essential for capturing the injury's cause and care timeline.
Questions About This Page
How many billable codes are in the W10 range?
Of the 21 codes in this range, 15 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the W10 range classify?
The range classifies fall on and from stairs and steps. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
