ICD-10-CM 2027 diagnosis code
Y33Other specified events, undetermined intent
Y33 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About Y33
Y33 is the ICD-10-CM diagnosis code for other specified events, undetermined intent. It belongs to block Y21-Y33 (event of undetermined intent) and chapter 20 (external causes of morbidity). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: Y33.XXXA (initial encounter), Y33.XXXD (subsequent encounter) and Y33.XXXS (sequela).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under Y33
Notes that apply from higher levels
Instructions written at a parent level also apply to Y33.
Broader instructions also apply from Y21-Y33 Event of undetermined intent and Chapter 20: External causes of morbidity.
Alphabetic index entries
5 entriesTerms in the official ICD-10-CM index that lead to Y33.
- Exposure (to) › electric current › taser › undetermined intent
- Injury, injured (accidental(ly)) NOS › inflicted (by) › other person › stated as › undetermined whether accidental or intentional
- Injury, injured (accidental(ly)) NOS › undetermined whether accidental or intentional
- Killed, killing (accidentally) NOS › self › stated as › undetermined whether accidental or intentional
- Undetermined intent (contact) (exposure) › specified event NEC
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about Y33
Is Y33 billable?
- No. Y33 is a header code. Report one of its more specific subcodes instead.