ICD-10 Code I97.791 – Other intraoperative cardiac functional disturbances during other surgery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I97.791 – Other intraoperative cardiac functional disturbances during other surgery
What it is
This code identifies a cardiac functional disturbance that occurs during surgery other than cardiac surgery. Use it when the record shows an intraoperative heart-related complication not better described by another code.
Clinical signs
Clinical features vary; refer to documentation. Typical notes may describe arrhythmia, hemodynamic instability, or other intraoperative cardiac dysfunction recognized by the surgical and anesthesia team.
When to use this code
Use this code when the provider documents a heart function disturbance arising during an operative procedure and specifies that it occurred intraoperatively. It is appropriate for noncardiac surgery cases when the event is not captured by a more specific diagnosis. If the documentation is vague, check documentation before assigning the code.
Do not use for
Do not use it for postoperative cardiac complications or for routine preexisting heart disease documented before surgery. Also avoid it when another, more specific intraoperative complication code is clearly supported.
Coding tip
Code the complication only when the surgeon or anesthesiologist clearly links the cardiac disturbance to the operation.