Y28.0XXA Contact with sharp glass, undetermined intent, initial encounter

ICD-10-CM Code Y28.0XXA: Contact with sharp glass, undetermined intent, initial encounter

ICD-10-CM code Y28.0XXA identifies an initial encounter involving contact with sharp glass when the intent cannot be determined. The code is listed among violent injury codes for undetermined intent. Public health reporting uses an any mention approach for undetermined intent codes, and the seventh character denotes the encounter type. 1 2

Plain-language overview

Code Y28.0XXA applies to a situation involving contact with sharp glass where the intent cannot be determined, and it represents an initial encounter for the event. 2

What this code represents

The code Y28.0XXA is included in a list of violent injury ICD-10-CM codes, distinguishing it from intentional self-harm by sharp glass, which is coded as X78.0xxA. 2

Codes for undetermined intent are used when the intent cannot be determined, and the seventh character A in this coding context corresponds to an initial encounter. 1 2

Coding details

The Illinois Department of Public Health lists Y28.0xxA as a specific inclusion code for contact with sharp glass, undetermined intent, initial encounter, alongside other Y28 codes for different sharp objects. 2

Documentation considerations

National Health Statistics Reports indicate that for undetermined intent codes, the intent cannot be determined, and these codes take an any mention approach in reporting. 1

Coverage and utilization context

The Centers for Disease Control and Prevention reports that codes for undetermined intent are used for public health administrative data and focus on whether the injury encounter also has an external cause code. 1

What the sources add

The Illinois Department of Public Health source provides the exact code inclusion for Y28.0xxA, while the CDC National Health Statistics Reports source explains the reporting framework and any mention approach for undetermined intent codes. 1 2

The CDC source discusses initial patient encounters within the context of healthcare encounters and infection control guidelines, whereas the Illinois source lists the code specifically as an initial encounter for injury reporting. 2 3

Sources

1. National Health Statistics Reports — cdc.gov; accessed 2026-07-25.
2. Violent Injury ICD-10 Inclusion Codes — dph.illinois.gov; accessed 2026-07-25.
3. 2007 Guideline for Isolation Precautions — cdc.gov; accessed 2026-07-25.