CPT 93642Cardiology

Ep evl 1/2chmb trnsvns cvdfb

CPT 93642 covers an electrophysiologic evaluation of one or two heart chambers performed through a vein, including cardioversion (restoring normal heart rhythm) when needed. This diagnostic test helps doctors identify and treat abnormal heart rhythms.

Showing rates for

National Average

Base Medicare rate

$316.67

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

4.63

PE RVU (NF)

4.26

MP RVU

0.9

Total RVU

9.79

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

Loading bundling edits…

Billing tips

Verify chamber count precisely before coding - 93642 covers one or two chambers only; three or more chambers requires different code (93653)
Impact: Incorrect chamber counting results in $150-300 payment variance and high audit risk; review catheter placement documentation carefully
Document cardioversion capability even if not performed - equipment setup and monitoring for potential cardioversion is inherent to 93642
Impact: Lack of cardioversion documentation can trigger downcoding to basic EP study codes with 30-40% reduction in reimbursement
Bill modifier 26 in hospital settings where facility owns equipment to avoid overpayment recovery; global billing only appropriate in physician-owned labs
Impact: Incorrect global billing versus component billing can result in $150+ overpayment subject to recoupment and potential fraud investigation
Separate diagnostic EP study (93642) from ablation procedures when both performed same session; use modifier 59 if medically necessary and distinct
Impact: Proper separation can preserve full reimbursement for both procedures ($316.67 + ablation fee) versus bundled denial
Ensure pre-procedure timeout, consent, and medical necessity documentation explicitly states indication for transvenous study versus non-invasive testing
Impact: Missing medical necessity justification is leading denial reason, delaying or preventing entire $316.67 payment
Code venous access separately (36010, 36011) only when not included in standard transvenous approach; most payers consider access bundled
Unbundling venous access inappropriately risks compliance flags; proper bundling avoids $50-75 denial and audit triggers

Live Field Datano reports yet

Real billers contribute denial patterns and appeal strategies for this code. Once 5+ reports come in, you’ll see live aggregated data here — the only place this exists, free.

Working with CPT 93642?

Get the free Revenue Protection Toolkit — the denial triggers, modifier pitfalls, and bundling conflicts that quietly cost you reimbursement. Instant download.

Help build the field knowledge

MedPayIQ gets smarter as billers contribute. If you've had this code denied, share what happened so others learn from it. Anonymous, no patient info.

Related actions

Frequently asked questions

What is the Medicare reimbursement rate for CPT 93642 in 2025?

The 2025 Medicare national average reimbursement for CPT 93642 is $316.67 for both facility and non-facility settings, based on 9.79 total RVUs and the conversion factor of 32.3465.

What is the difference between CPT 93642 and 93653?

CPT 93642 covers EP evaluation of one or two cardiac chambers with cardioversion capability, while 93653 covers comprehensive EP evaluation of three or more chambers. The chamber count determines the appropriate code selection and significantly impacts reimbursement.

Can CPT 93642 be billed with an ablation code on the same day?

Yes, but documentation must clearly show the diagnostic EP study was a separate, medically necessary procedure performed before the decision to ablate. Use modifier 59 to indicate distinct procedural service, and expect potential payer scrutiny requiring detailed justification.

How many RVUs is CPT code 93642 worth in 2025?

CPT 93642 has 9.79 total RVUs in 2025, composed of 4.63 work RVUs, 4.26 practice expense RVUs (both facility and non-facility), and 0.9 malpractice RVUs according to the CMS Physician Fee Schedule.

What documentation is required to bill CPT 93642?

Required documentation includes specific chamber identification (one or two chambers), intracardiac electrogram recordings, programmed stimulation protocol, cardioversion capability setup, baseline intervals, venous access documentation, medical necessity justification, and detailed procedural findings with interpretation.

Do I need modifier 26 when billing 93642 in a hospital setting?

Yes, when performing 93642 in a hospital or facility that owns the equipment, bill modifier 26 for the professional component only. The facility bills the technical component separately. Global billing is only appropriate in physician-owned laboratories.

What are common denial reasons for CPT 93642?

Common denials include insufficient medical necessity documentation, bundling with ablation procedures performed same session, unclear chamber count documentation, and incorrect facility versus non-facility billing. Each requires specific documentation and appeal strategies to overturn.