Y28.1
⚠ Non-billable
Contact with knife, undetermined intent
ICD-10-CM · FY2026 · External Causes of Morbidity
Code
Y28.1
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
External Causes of Morbidity
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code Y28.1?
ICD-10-CM code Y28.1 represents Contact with knife, undetermined intent. It is a non-billable header code requiring a more specific subcategory in the External Causes of Morbidity chapter, effective October 1, 2025 – September 30, 2026.
Is Y28.1 billable?
No. Y28.1 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is Y28.1 in?
Y28.1 belongs to the External Causes of Morbidity chapter (V00–Y99) of ICD-10-CM.
Related codes in the Y28 category
Y28
Contact with sharp object, undetermined intent
Non-billable
Y28.0
Contact with sharp glass, undetermined intent
Non-billable
Y28.2
Contact with sword or dagger, undetermined intent
Non-billable
Y28.8
Contact with other sharp object, undetermined intent
Non-billable
Y28.9
Contact with unspecified sharp object, undetermined intent
Non-billable
Y28.0XXA
Contact with sharp glass, undetermined intent, initial encounter
Billable
Y28.0XXD
Contact with sharp glass, undetermined intent, subsequent encounter
Billable
Y28.0XXS
Contact with sharp glass, undetermined intent, sequela
Billable
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