CPT code 93662 – Intracardiac echocardiography during cardiac intervention

Key takeaways

CPT code 93662 is an add-on code, so it’s only paid with a qualifying primary procedure, such as 93653 or 93654, on the same claim.

Since January 1, 2025, AF ablation code 93656 includes intracardiac echocardiography, so 93662 is never reported with it.

The classic mix-up is 93662, with the catheter inside the heart, versus 93312, with the probe in the esophagus.

Report 93662 once per encounter, never per vessel, and never append modifier -51.

Claim scrubbing through a clearinghouse such as Claim.MD, plus eligibility checks and ERA matching, catches errors before and after a 93662 claim goes out.

CPT code 93662 is the add-on for ICE during a heart procedure

CPT code 93662 reports intracardiac echocardiography, or ICE, performed during a therapeutic or diagnostic intervention. It includes the imaging supervision and interpretation. The American Medical Association (AMA) lists it as a Category I add-on code, marked with a “+” in the CPT codebook.

It sits under Medicine, then Cardiovascular, in the Intracardiac Electrophysiological Procedures/Studies range, 93600-93662. You report it once per encounter, and only next to a qualifying primary procedure code. It’s never billed per vessel or per imaging view.

What 93662 covers: imaging from inside the heart

To perform ICE, the physician advances a miniaturized ultrasound catheter through a vein into the right heart chambers. They then steer it to image cardiac structures in real time. Surface echo images from outside the chest, and transesophageal echo images from the esophagus. ICE puts the imaging element right beside the target anatomy, which is why it’s used to guide catheter and device work.

The code covers the full supervision-and-interpretation service for the imaging session, not individual image acquisitions. It isn’t reported again for each catheter position or view.

Common procedures where ICE guidance appears:

• SVT and atrial flutter ablation, to confirm catheter contact and cavotricuspid isthmus block
• Ventricular tachycardia ablation, for substrate mapping and catheter localization
• Atrial septal defect or patent foramen ovale closure, for transseptal guidance and device sizing
• Transcatheter aortic valve replacement (TAVR), as supplemental imaging during the intervention
• Left atrial appendage occlusion, for device sizing and position checks
• Atrial fibrillation ablation, where ICE is routine but no longer separately reportable (more on that below)

The code doesn’t cover a diagnostic echo done outside an intervention. Billing 93662 with no qualifying primary on the claim leads to an automatic denial.

93662 only pays when a qualifying primary code is on the claim

Add-on codes capture a secondary service performed alongside a primary procedure, so they can’t stand alone. For 93662, the claim needs at least one qualifying primary code from the list below. Both codes must describe work performed in the same session.

Payers treat the add-on as extra payment attached to the primary, not as a separate event. Structural work counts as well, including septal defect closure under 93580. The one code to watch is 93656, which now absorbs the ICE payment.

This list isn’t exhaustive. The 2025 list also covers transcatheter mitral and tricuspid codes and several heart-catheterization codes. Confirm the current pairings in the AMA CPT code set for the code year, because add-on pairings change.

93662 vs 93312: catheter in the heart or probe in the esophagus

Both codes describe echo guidance during a cardiac procedure. The imaging route, code type and typical case differ, though. Transesophageal echo uses 93312, which is a standalone code. Mixing the two up is a common coding error in EP billing, and the procedure note settles which one applies.

The quickest self-audit: look for “intracardiac catheter” or “ICE catheter advanced via femoral vein” in the procedure note. If that language is missing, 93662 isn’t supported. Review the claim before it goes out.

Ablation codes that do and don’t take 93662

93662 shares claims with the comprehensive EP ablation codes. Choosing among them takes the standalone vs add-on split, plus one 2025 bundling change.

Since January 1, 2025, 93656 includes intracardiac echocardiography and 3D mapping. So 93662 is never reported with it, even when the note documents ICE in detail. With 93653 or 93654, list 93662 as its own add-on line, without modifier -51.

What Medicare pays for 93662: about $68 at 2024 rates

Medicare pays 93662 on top of the primary procedure payment. CMS sets the rates each year in the Medicare Physician Fee Schedule (MPFS) final rule, effective January 1.

The table shows 2024 national MPFS values for the professional component, 93662-26. Verify current-year figures with the CMS Physician Fee Schedule lookup tool or a tool such as FastRVU before quoting rates.

Facility vs non-facility: CMS sets national RVUs only for the professional component. The global code and the -TC line are contractor-priced, so the Medicare Administrative Contractor (MAC) decides any technical payment. In a hospital EP lab, the hospital’s facility claim covers the equipment and staff. That’s why the physician’s claim usually carries 93662-26.

A worked example: how an SVT ablation claim with ICE moves

Here’s one case from note to payment. An electrophysiologist ablates AVNRT in a hospital EP lab and uses ICE to guide catheter placement.

1. The procedure note documents the ablation, the ICE catheter’s intracardiac position and the physician’s reading of the images.
2. The physician’s claim, sent as an 837P or CMS-1500, lists 93653 on line one and 93662-26 on line two.
3. Each line carries one unit, and neither carries modifier -51.
4. Both lines point to the arrhythmia diagnosis that supports the ablation.
5. The hospital bills the room, equipment and ICE catheter on its own facility claim.
6. The 835 remittance pays 93662-26 at roughly $68 nationally under 2024 rates, before geographic adjustment.

Now swap the case for an AF ablation under 93656. The second line disappears, because the ICE work is already paid inside the ablation code.

Documentation that supports 93662 names the catheter and the reading

Vague documentation is a frequent audit trigger for 93662. Payers look for proof of three things in the procedure note. ICE was performed inside the heart, the physician supervised and interpreted it, and the primary intervention needed it.

A clean claim for 93662 needs a note that covers these elements:

• Clinical indication: the specific reason ICE was needed, such as “transseptal puncture guidance for left atrial appendage occlusion”
• Catheter placement: an explicit statement that an ICE catheter was introduced intravascularly and advanced into the heart, not a transesophageal probe
• Imaging findings: the structures seen and key observations, such as “occluder seated across the septum” or “no pericardial effusion at procedure end”
• Physician interpretation: the supervising physician documents their own reading of the ICE findings, not just a technician note
• Link to the primary procedure: a statement that ICE supported the primary coded procedure, such as 93653 SVT ablation
• Time or duration, if required: some commercial payers ask for start and stop times for the ICE session

Good medical billing compliance treats documentation problems as a pre-submission issue, not a post-denial one. A note that only says “ICE used during procedure” won’t survive a medical necessity review.

Before you submit: a five-point check for every 93662 claim

Run these checks on the chart and the claim before 93662 goes out:

• The note says the ICE catheter was inside the heart. If it describes an esophageal probe, the code is 93312 or 93355.
• A qualifying primary, such as 93620, 93653, 93654, a TAVR code or 33340, is on the same claim.
• The primary isn’t 93656. If it is, delete the 93662 line.
• 93662 is billed as one unit, with no modifier -51.
• Modifier -26 is on the line when the hospital owns the equipment and bills the facility side.

The same checks work as a decision path. Answer them in order, and stop at the first one that fails:

Prior authorization and the denial reasons that hit 93662

Prior authorization

Medicare generally doesn’t require separate prior authorization for an add-on billed with a covered EP procedure. When the primary procedure, such as 93653, is authorized, its add-ons usually ride on that approval. Many commercial payers do require authorization for the primary. Some apply it to the whole procedure bundle, so 93662 coverage depends on that approval.

Check each payer’s portal before scheduling, as part of a steady prior authorization process. For commercial plans, put the medical necessity rationale for ICE in the request for the primary procedure.

Common denial reasons

Most 93662 denials fall into six groups. Clear denial management workflows and a working list of medical billing denial codes help teams resolve them faster:

• No qualifying primary: 93662 submitted alone, which is an automatic technical denial
• Bundled primary: 93662 billed with 93656, which has included ICE since 2025
• Ineligible pairing: a primary code that isn’t on the CPT add-on list for 93662
• Medical necessity not documented: a generic “echo used for guidance” with no intracardiac placement
• Wrong code: 93312 billed when the note describes ICE, or the reverse
• Modifier or unit errors: -51 appended, or more than one unit when the limit is one

Units per encounter

CPT guidance and most payer policies allow 93662 once per encounter. The code covers the whole ICE session, however many catheter positions or views were obtained. CMS Medically Unlikely Edits (MUEs) set the limit at one unit per day. Billing two or more units without a payer-specific exception leads to rejections. Check the current CMS MUE tables before you update billing templates.

Modifiers and care settings: who bills which part of 93662

Modifier rules

Four modifiers come up in 93662 billing:

• Modifier -51 (multiple procedures), never on 93662. AMA CPT guidelines exempt add-on codes from -51. Appending it signals a billing error and can trigger a denial or a reopening.
• Modifier -26 (professional component): used when the physician interprets the ICE images but doesn’t own the equipment. A hospital-employed physician using the hospital’s ICE system is the usual case.
• Modifier -TC (technical component): used when the equipment and staffing side is billed under the physician fee schedule, as in an office-based lab. A separate physician then bills -26.
• Modifier -59 (distinct procedural service): rarely needed. Use it only when a payer’s written policy asks for it and the chart supports a distinct service.

Billing by care setting

The setting decides both the payment rate and who submits which part of the bill:

• Hospital outpatient, cath lab or EP lab: the hospital files the facility claim on a UB-04, covering equipment, supplies, nursing and room costs. The physician files a separate CMS-1500 with 93662-26.
• Ambulatory surgical center (ASC): the ASC bills the facility side, and the physician bills the professional component. Check the current ASC payment addenda for 93662 before advising ASC-based EP programs.
• Office-based lab (OBL): possible if the physician owns the equipment, but rare for ICE. Fluoroscopy, resuscitation capability and anesthesia support make the setting uncommon. A non-facility claim should be backed by notes confirming the setting and equipment ownership.

How claims management software keeps 93662 claims moving

In many EP programs, coders key each add-on line by hand. Rejections then come back through separate payer portals, and someone has to match them to the right case.

Pabau, the practice management platform we build, includes claims management software that pre-fills each claim from the patient record. The CPT codes attached to the service land on the charge lines. Required fields are checked before the claim can be sent.

Claims go out through Claim.MD, a US medical claims clearinghouse, in 837P or CMS-1500 format. Its claim scrubbing catches format errors before a payer sees them. Remittances come back as ERAs, with their CARC reason codes, in the same workflow.

For EP coding teams, this means:

• Charge lines pre-filled from the codes attached to the service, with no retyping
• Required fields, such as member IDs and authorization numbers, checked before the claim is sent
• Eligibility confirmed in real time before the procedure date
• ERA/835 remittance matched to the original claim, so CARC codes for a 93662 rejection show up without a portal search

Send cleaner 93662 claims the first time

Pabau builds the claim from the patient record and sends it through Claim.MD, with eligibility checks before the procedure and ERA matching after. Book a demo to see the claims workflow.

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Conclusion

The coding call for 93662 happens before anyone opens the claim form. Read the procedure note, confirm the catheter sat inside the heart, and check which primary code it supported.

If that primary is 93620, 93653, 93654 or a qualifying structural heart code, add 93662 once, with -26 in a facility. If it’s 93656, leave ICE off the claim, because the ablation code already pays for it. Make those two calls correctly and the add-on line stops drawing denials.

Want fewer 93662 lines bouncing back from payers? Book a demo to see how Pabau sends EP claims through Claim.MD and matches each remittance to its claim.

Continue your research

Need to understand how claims move through the clearinghouse? Medical claims clearinghouse overview explains how 837P files, eligibility checks, and remittance processing work end to end.

Dealing with recurring EP claim rejections? Electronic remittance advice (ERA) explained walks through how to read 835 files and map CARC denial codes back to the original claim.

Want a broader billing compliance framework? What is revenue cycle management covers the end-to-end process from eligibility verification through final payment posting.

Billing TEE instead of ICE? CPT code 93312 billing guide covers transesophageal echo coding and its rates.

Filing the physician claim on paper? CMS-1500 form template shows each field the add-on and primary lines need.

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