Y65.8 — Other specified misadventures during surgical and medical care

BillableUnspecified

Is Y65.8 billable?

Yes, but Y65.8 is an unspecified code. Y65.8 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, Y65.8 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting Y65.8 — the more specific alternatives are listed below.

More specific alternatives

Y65.8 at a glance

Code	Y65.8
Description	Other specified misadventures during surgical and medical care
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

How is Y65.8 listed in the External Cause Index?

These are the routes through the External Cause of Injuries Index that lead to Y65.8 — how the injury happened, rather than what the injury was.

Failure › mechanical, of instrument or apparatus
Misadventureduring surgical or medical care › specified type NEC (s) to patient(s)
Misadventureduring surgical or medical care › failure › mechanical, of instrument or apparatus (s) to patient(s)

Excludes1 — never code together — inherited from Y62-Y69

The conditions below can never be reported together with Y65.8 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

surgical and medical procedures as the cause of abnormal reaction of the patient, without mention of misadventure at the time of the procedure (Y83-Y84)

Excludes2 — not included here — inherited from Y62-Y69

The conditions below are not part of Y65.8, but a patient may have both at the same time. When documentation supports it, Y65.8 and the excluded code may both be reported.

breakdown or malfunctioning of medical device (during procedure) (after implantation) (ongoing use) (Y70-Y82)

How long has Y65.8 existed?

Y65.8 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.