ICD-10-CM 2027 diagnosis code
Y27.1Contact with hot tap water, undetermined intent
Y27.1 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.
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 Y27.1
Y27.1 is the ICD-10-CM diagnosis code for contact with hot tap water, undetermined intent. It belongs to category Y27 (contact with steam, hot vapors and hot objects, undetermined intent), 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.
Within Y27 (contact with steam, hot vapors and hot objects, undetermined intent), Y27.1 is specifically for contact with hot tap water, undetermined intent. Related codes cover steam and hot vapors, undetermined intent (Y27.0), hot fluids, undetermined intent (Y27.2), hot household appliance, undetermined intent (Y27.3), other hot objects, undetermined intent (Y27.8) and unspecified hot objects, undetermined intent (Y27.9).
Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
7th character
The appropriate 7th character is to be added to each code from category Y27
Notes that apply from higher levels
Instructions written at a parent level also apply to Y27.1.
Broader instructions also apply from Y21-Y33 Event of undetermined intent and Chapter 20: External causes of morbidity.
Alphabetic index entries
4 entriesTerms in the official ICD-10-CM index that lead to Y27.1.
- Contact (accidental) › with › hot › liquid NEC › tap water › stated as undetermined whether accidental or intentional
- Contact (accidental) › with › hot › tap-water › stated as undetermined whether accidental or intentional
- Contact (accidental) › with › hot › water (tap) › stated as undetermined whether accidental or intentional
- Undetermined intent (contact) (exposure) › hot object › tap water
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 Y27.1
Is Y27.1 billable?
- No. Y27.1 is a header code. Report one of its more specific subcodes instead.