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ICD-10-CM 2027 diagnosis code

Y65.51Performance of wrong procedure (operation) on correct patient

✓ Billable / specific

Y65.51 is a valid, billable ICD-10-CM code for performance of wrong procedure (operation) on correct patient. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Performance of wrong procedure (op) on correct patient

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 Y65.51

Y65.51 is the ICD-10-CM diagnosis code for Performance of wrong procedure (operation) on correct patient. 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 billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within Y65.5 (Performance of wrong procedure (operation)), Y65.51 is specifically for Performance of wrong procedure (operation) on correct patient. Related codes cover procedure (operation) on patient not scheduled for surgery (Y65.52) and correct procedure (operation) on wrong side or body part (Y65.53).

Don't report Y65.51 together with the conditions in its Excludes1 note: performance of correct procedure (operation) on wrong side or body part (Y65.53).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as E876.5 (Performance of wrong operation (procedure) on correct patient).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Wrong device implanted into correct surgical site
Excludes1Not coded here — never report together with this code
  • performance of correct procedure (operation) on wrong side or body part (Y65.53)

Notes that apply from higher levels

Instructions written at a parent level also apply to Y65.51.

Broader instructions also apply from Y62-Y69 Misadventures to patients during surgical and medical care and Chapter 20: External causes of morbidity.

Alphabetic index entries

4 entries

Terms in the official ICD-10-CM index that lead to Y65.51.

ICD-9-CM equivalent

Converter →
  • E876.5Performance of wrong operation (procedure) on correct patientexact

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about Y65.51

Is Y65.51 billable?

Yes. Y65.51 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can Y65.51 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict Y65.51 as a principal diagnosis.

Is Y65.51 a CC or MCC?

No. Y65.51 is neither a CC nor an MCC under MS-DRG v44.0.

What is the ICD-9 code for Y65.51?

The CMS General Equivalence Mappings map Y65.51 to ICD-9-CM E876.5.