W16.11 Fall into natural body of water striking water surface
The ICD-10-CM code for Fall into natural body of water striking water surface is W16.11 (FY2026). It is a non-billable category code — select a more specific code below for claims.
Classification
- Section
- W00-W19: Slipping, tripping, stumbling and falls (W00-W19)
- Category W16
- 78 codes (46 billable)
- FY2026 Status
- Stable since FY2024
Official Coding Guidelines
Used with any code in range A00.0-T88.9, Z00-Z991) Used with any code in the range of A00.0-T88.9, Z00-Z99 An external cause code may be used with any code in the range of A00.0-T88.9, Z00-Z99, classification that represents a health condition due to an external cause. Though they are most applicable to injuries, they are also valid for use with such things as infections or diseases due to an external source, and other health conditions, such as a heart attack that occurs during strenuous physical activity.
External cause code used for length of treatment2) External cause code used for length of treatment Assign the external cause code, with the appropriate 7th character (initial encounter, subsequent encounter or sequela) for each encounter for which the injury or condition is being treated. Most categories in chapter 20 have a 7th character requirement for each applicable code. Most categories in this chapter have three 7th character values: A, initial encounter, D, subsequent encounter and S, sequela. While the patient may be seen by a new or different provider over the course of treatment for an injury or condition, assignment of the 7th character for external cause should match the 7th character of the code assigned for the associated injury or condition for the encounter.
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026