2026 ICD-10-CM Diagnosis Code Y00Assault by blunt object
Y00 is a non-billable ICD-10-CM category code for assault by blunt object, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Y00.XXXA, Y00.XXXD, and Y00.XXXS.
Code Identity
Code Classification
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 1 Excludes
- assault by strike by sports equipment Y08.0
7th Character Note
- The appropriate 7th character is to be added to code Y00
7th Character
- A - initial encounter
- D - subsequent encounter
- S - sequela
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.
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.
Indicates that a seventh character is to be assigned to codes in a subcategory.
