2026 ICD-10-CM Diagnosis Code Y33Other specified events, undetermined intent
Y33 is a non-billable ICD-10-CM category code for other specified events, undetermined intent, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Y33.XXXA, Y33.XXXD, and Y33.XXXS.
Code Identity
Code Classification
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
7th Character Note
- The appropriate 7th character is to be added to code Y33
7th Character
- A - initial encounter
- D - subsequent encounter
- S - sequela
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.
Code HistoryHistory
Questions About Y33Overview
Is Y33 (Other specified events, undetermined intent) a billable code?
No. This is a category header that groups the codes for other specified events, undetermined intent, and headers cannot be submitted on claims. Claims for other specified events, undetermined intent need a more specific code from this category, such as Y33.XXXA, Y33.XXXD, and Y33.XXXS.
