I97.791 Other intraoperative cardiac functional disturbances during other surgery

ICD-10-CM Code I97.791: Other Intraoperative Cardiac Functional Disturbances During Other Surgery

ICD-10-CM code I97.791 identifies other intraoperative cardiac functional disturbances occurring during other surgery. The concept is an active terminology record classified as a disease or syndrome, with a parent concept for other intraoperative cardiac functional disturbances. It appears in official Medicare billing and coding articles for cardiac procedures. 1 2 5

Plain-language overview

Code I97.791 describes an intraoperative cardiac functional disturbance that takes place during a surgical procedure classified as other surgery, serving as an active diagnosis terminology record. 1

What this code represents

The official preferred name for I97.791 is Other intraoperative cardiac functional disturbances during other surgery, and its assigned semantic type is Disease or Syndrome. 1 5

Code I97.791 is a narrower concept under the parent code I97.79, which represents other intraoperative cardiac functional disturbances in the ICD-10-CM terminology. 1 4

Coding details

The broader subcategory I97.7 covers intraoperative cardiac functional disturbances, and category I97 addresses intraoperative and postprocedural complications and disorders of the circulatory system not elsewhere classified. 6

Subcategory I97.79 is situated within Chapter 9, Diseases of the circulatory system, specifically under the range I95-I99 for other and unspecified disorders of the circulatory system. 6

Documentation considerations

The terminology record for I97.791 includes an active status and a published abbreviation of oth intraop cardiac functional disturb during oth surgery for reference. 1

Coverage and utilization context

Code I97.791 appears in a Medicare billing and coding article for percutaneous ventricular assist devices, distinguishing disturbances during other surgery from disturbances during cardiac surgery. 2

Code I97.791 also appears in a Medicare billing and coding article for transesophageal echocardiography, listing it alongside the code for disturbances during cardiac surgery. 3

What the sources add

While terminology records define the code as a disease or syndrome, Medicare billing articles provide operational context by listing I97.791 within procedure-specific coding guidance for cardiac devices and imaging. 1 2 3

Sources

1. ICD-10-CM I97.791 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Article - Billing and Coding: Percutaneous Ventricular Assist Device (A53988) — cms.gov; accessed 2026-07-27.
3. Article - Billing and Coding: Transesophageal Echocardiography (TEE) (A56505) — cms.gov; accessed 2026-07-27.
4. Browse Code Systems — vsac.nlm.nih.gov; accessed 2026-07-27.
5. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.
6. ICD-10-CM Code I97.79 | Vero — veroscribe.com; accessed 2026-07-27.