CPT 93602Cardiology

Intra-atrial recording

CPT code 93602 covers intra-atrial recording, a diagnostic procedure where electrodes placed inside the heart's upper chambers record electrical activity to identify abnormal heart rhythms.

Showing rates for

National Average

Base Medicare rate

$108.04

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

2.12

PE RVU (NF)

0.83

MP RVU

0.39

Total RVU

3.34

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

NCCI bundling edits

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Billing tips

Document the specific atrial chamber(s) recorded (right atrium, left atrium, or both) and the number of catheter positions used, as this establishes medical necessity and supports coding when billed with comprehensive EP studies
Impact: Proper documentation reduces denial risk by 35-40% and supports medical necessity for concurrent procedures
When performed as part of a comprehensive EP study, verify that 93602 is not bundled into the primary procedure code (such as 93620) by checking current NCCI edits before billing separately
Impact: Prevents automatic denials and rebilling delays; NCCI bundling violations result in 100% payment denial
Bill 93602 with the facility rate of $108.04 when performed in hospital or ASC settings, as both non-facility and facility rates are identical for this code in 2025
Impact: Ensures accurate reimbursement expectations; no payment differential between settings
Link appropriate ICD-10 diagnosis codes that support medical necessity, such as I47.1 (supraventricular tachycardia), I48.0-I48.2 (atrial fibrillation variants), or I48.3-I48.4 (atrial flutter)
Impact: Proper diagnosis linkage reduces medical necessity denials by approximately 25-30%
When billing with ablation procedures, ensure documentation clearly distinguishes diagnostic recording from mapping performed as integral part of ablation to justify separate payment
Impact: Clear distinction can preserve full $108.04 reimbursement versus losing payment entirely to bundling
Verify that the total RVU of 3.34 (Work: 2.12, PE: 0.83, MP: 0.39) aligns with your practice's productivity metrics and physician compensation models

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 93602 in 2025?

The 2025 Medicare national average reimbursement for CPT 93602 is $108.04 for both facility and non-facility settings. This rate is based on a total RVU of 3.34 multiplied by the 2025 conversion factor of 32.3465.

Can CPT 93602 be billed with ablation codes on the same date of service?

CPT 93602 can potentially be billed with ablation codes, but it is subject to NCCI bundling edits. You must document that the intra-atrial recording was a distinct diagnostic service performed separately from the mapping integral to ablation. Modifier 59 may be required with comprehensive documentation supporting medical necessity of the separate recording.

What is the difference between CPT 93602 and 93603?

CPT 93602 covers intra-atrial recording specifically from the atrial chambers, while CPT 93603 covers right ventricular recording. These codes represent recordings from different cardiac chambers and are separately reportable when both atrial and ventricular recordings are medically necessary and performed.

How many RVUs is CPT code 93602 worth in 2025?

CPT 93602 has a total RVU value of 3.34 in 2025, consisting of 2.12 work RVUs, 0.83 practice expense RVUs (both facility and non-facility), and 0.39 malpractice RVUs.

What documentation is required to bill CPT 93602 separately during an EP study?

Documentation must include the specific atrial recording sites, catheter positions, duration of recording, electrogram tracings, clinical findings, and most importantly, how the diagnostic recording influenced clinical decision-making separately from any therapeutic mapping or ablation performed during the same session.

Is CPT 93602 a unilateral or bilateral procedure code?

CPT 93602 is not designated as unilateral or bilateral; it represents intra-atrial recording regardless of whether one or both atria are recorded. The code is reported once per session even if recordings are obtained from multiple atrial sites, unless documentation supports distinct separate recordings with modifier 76.

What are common denial reasons for CPT 93602 claims?

The most common denials include: bundling with comprehensive EP study codes under NCCI edits, lack of medical necessity documentation, insufficient distinction from ablation mapping procedures, and duplicate billing without supporting documentation for multiple distinct recordings during the same session.