ICD-10-CM 2027 diagnosis code
Y65.5Performance of wrong procedure (operation)
Y65.5 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 Y65.5
Y65.5 is the ICD-10-CM diagnosis code for Performance of wrong procedure (operation). It belongs to category Y65 (other misadventures during surgical and medical care), block Y62-Y69 (misadventures to patients during surgical and medical care) 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 Y65 (other misadventures during surgical and medical care), Y65.5 is specifically for Performance of wrong procedure (operation). Related codes cover Mismatched blood in transfusion (Y65.0), wrong fluid used in infusion (Y65.1), failure in suture or ligature during surgical operation (Y65.2), endotracheal tube wrongly placed during anesthetic procedure (Y65.3), failure to introduce or to remove other tube or instrument (Y65.4) and other specified misadventures during surgical and medical care (Y65.8).
To report this condition, pick the subcode that matches the documentation: Y65.51 (on correct patient), Y65.52 (surgery) and Y65.53 (part).
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 Y65.5
Notes that apply from higher levels
Instructions written at a parent level also apply to Y65.5.
Broader instructions also apply from Y62-Y69 Misadventures to patients during surgical and medical care and Chapter 20: External causes of morbidity.
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 Y65.5
Is Y65.5 billable?
- No. Y65.5 is a header code. Report one of its more specific subcodes instead.