What does RCIS stand for?
RCIS stands for Registered Cardiovascular Invasive Specialist. It is a registry-level credential awarded by Cardiovascular Credentialing International (CCI). You earn it by meeting one of CCI's eligibility pathways and passing CCI's RCIS examination.
Broken down, the words describe the job precisely. Cardiovascular is the system. Invasive means procedures that enter the body — catheters into vessels and chambers — as opposed to non-invasive cardiology such as echocardiography or stress testing. Specialist and Registered together mark it as a registry-level credential rather than an entry-level certificate.
So what is an RCIS?
An RCIS is a cardiac catheterization laboratory professional who has passed CCI's RCIS exam. The important nuance, and the one that causes most of the confusion around this term, is that RCIS is a credential, not a job title and not a profession.
People are often surprised by this. Job postings say "RCIS required," so it reads like a role. It is not. The people who hold the RCIS arrive from several different backgrounds:
- Invasive cardiovascular technologists who trained specifically for the cath lab
- Radiologic technologists who crossed over into cardiovascular work
- Registered nurses working in the cath lab — see can nurses take the RCIS exam
- Paramedics and respiratory therapists who moved into invasive cardiology
All four sit the same exam against the same blueprint and the same passing standard. What differs is only the eligibility pathway that got them there.
What does an RCIS do?
Work in the cath lab is team-based and rotates through a set of positions rather than a fixed job description. Across those positions, the work typically includes:
- Preparing and assessing patients before the procedure — labs, NPO status, consent confirmation, and the time-out
- Scrubbing — working at the sterile field, handling catheters, wires, balloons, and stents alongside the physician
- Monitoring — running the hemodynamic system, recording and recognizing pressure waveforms such as right atrial pressure, wedge pressure, and LVEDP, and performing calculations such as cardiac output and valve areas
- Circulating — managing the room, medications, equipment, and documentation
- Operating imaging equipment and understanding angiographic projections such as the RAO caudal spider view, along with radiation safety
- Recognizing and responding to procedural emergencies — tamponade, coronary perforation, arrhythmias, contrast reactions, and access complications
- Post-procedure care: sheath management, closure devices, manual compression, and complication surveillance
An important limit on that list. Which of these tasks any individual actually performs is determined by their own professional license, where they hold one, and by their employer's policies — not by the RCIS credential. The credential demonstrates knowledge; it does not grant permission. This distinction matters enough that we gave it its own page: RCIS scope of practice.
Is RCIS a degree, a license, or a certification?
A certification. It is worth separating the three, because they are frequently muddled:
| Type | Who grants it | Is RCIS one? |
|---|---|---|
| Academic degree | A college or university | No — a degree or certificate program may be how you qualify, but the RCIS itself is not a degree |
| State license | A state licensing board | No — CCI is a credentialing body, not a government regulator |
| Professional certification | A credentialing organization | Yes — awarded by CCI on the basis of eligibility plus an exam |
The practical difference: a license grants legal authority to practice, while a certification demonstrates that you met an independent standard. Employers care a great deal about the second one, but it is the first that defines what you may legally do.
How are the letters written?
The credential is written after your name, following your degree and license. A nurse who holds it might sign as Jane Doe, BSN, RN, RCIS. A technologist might sign as John Doe, RCIS. Someone who holds both cath lab and EP credentials would list both, as RCIS, RCES.
The credential is only valid while it is current. CCI renews registry-level credentials on a three-year cycle requiring 36 CEUs, of which a minimum of 30 must be cardiovascular-related. Anyone can check whether a credential is active through CCI's public credential verification.
CEU requirements per CCI's continuing education page, retrieved 2026-08-15.
RCIS compared with the credentials people confuse it with
| Credential | What it covers | Awarded by |
|---|---|---|
| RCIS | The cardiac cath lab — diagnostic catheterization, hemodynamics, coronary intervention | CCI |
| RCES | The EP lab — electrophysiology studies, ablation, device therapy | CCI |
| RCS | Non-invasive cardiac sonography — echocardiography | CCI |
| CVT | A job title and training background, not a single national credential | Varies |
| RN | A state nursing license — a license, not a specialty certification | State boards of nursing |
RCIS, RCES, and RCS are all CCI credentials; see CCI's credentials overview. Titles such as CVT are used differently between employers and regions.
The comparison people ask about most is RCIS against RCES, because plenty of staff work in both labs. The full breakdown, including which to sit first, is on RCIS vs RCES.
How do you become an RCIS?
Two things: qualify under one of CCI's three eligibility pathways, then pass the exam. The pathways are covered on RCIS requirements, and the process end to end is on how to get RCIS certification. If you are not in the field yet at all, start further back with how to become a cath lab tech.
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Start the free diagnostic Browse the cath lab glossary →Frequently asked
What does RCIS stand for?
Registered Cardiovascular Invasive Specialist — a registry-level credential awarded by Cardiovascular Credentialing International (CCI).
What is an RCIS?
A cath lab professional who has met one of CCI's eligibility pathways and passed the RCIS exam. It is a credential rather than a job title, held by technologists, nurses, radiologic technologists, and paramedics alike.
What does an RCIS do?
Cath lab work: patient preparation and monitoring, scrubbing and circulating for diagnostic and interventional procedures, running hemodynamic monitoring, operating imaging equipment, and responding to procedural emergencies. Exactly which tasks depend on the individual's license and employer policy.
Is RCIS a degree?
No. It is a professional certification, not an academic degree, though a degree or certificate program is one route to qualifying for it.
What is the difference between RCIS and RCES?
RCIS is the cath lab credential; RCES is the EP lab credential. Both are awarded by CCI.
Can a nurse be an RCIS?
Yes. Nursing counts as a health science program, so cath lab RNs commonly qualify under the RCIS235 pathway. Holding it does not change a nurse's licensed scope of practice.