X99.9XXD Assault by unspecified sharp object, subsequent encounter

ICD-10-CM Code X99.9XXD: Assault by unspecified sharp object, subsequent encounter

ICD-10-CM code X99.9XXD is labeled "Assault by unspecified sharp object, subsequent encounter." It is listed in the ICD10CM code system and appears within the X99 category for assault by sharp object. The available sources confirm the code's descriptor, its placement in the hierarchy, and its distinction from sibling codes for other sharp objects or encounter types. 1 2 3

Plain-language overview

Code X99.9XXD is labeled "Assault by unspecified sharp object, subsequent encounter" in the ICD10CM code system. This descriptor is confirmed by both the EVS Explore and VSAC listings for this code. 1 2

What this code represents

The code X99.9XXD is listed within the ICD10CM code system version 2023, and its official descriptor is "Assault by unspecified sharp object, subsequent encounter." 2

Coding details

The code X99.9XXD appears in a hierarchy under X99.9, which is labeled "Assault by unspecified sharp object," and this subcategory falls under the broader X99 category labeled "Assault by sharp object." 3

The X99 category includes sibling codes that distinguish between unspecified sharp objects, other sharp objects, and sharp glass, as well as different encounter types such as initial encounter, subsequent encounter, and sequela. 3

Documentation considerations

The available sources list X99.9XXD alongside related codes such as X99.9XXA for initial encounter and X99.9XXS for sequela, indicating that the seventh character differentiates the encounter type for the unspecified sharp object assault. 3

What the sources add

The EVS Explore and VSAC sources both list X99.9XXD with its official descriptor and identify it as part of the ICD10CM code system, while the Unbound Medicine source additionally provides the code tree showing related sibling codes. 1 2 3

A comparison of the sources shows that EVS Explore and VSAC provide the code descriptor and system affiliation, whereas Unbound Medicine adds operational context by displaying the hierarchy of X99 sibling codes and their encounter-type variations. 1 2 3

Questions to verify

The supplied sources do not establish whether X99.9XXD is a billable code, nor do they provide documentation elements, clinical criteria, or payer-specific coverage rules for its use. 1 2 3

Sources

1. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-26.
2. Browse Code Systems — vsac.nlm.nih.gov; accessed 2026-07-26.
3. ICD-10-CM 2024 | X99 - Assault by sharp object — unboundmedicine.com; accessed 2026-07-26.