CPT 93243Cardiology

Ext ecg>48hr<7d scan a/r

CPT 93243 covers the professional analysis and reporting of extended heart rhythm monitoring recorded over 48 hours to 7 days using a wearable ECG device. This is the physician's interpretation of the scan and report, not the recording itself.

Showing rates for

National Average

Base Medicare rate

$226.43

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

PE RVU (NF)

6.99

MP RVU

0.01

Total RVU

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

NCCI bundling edits

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Billing tips

Verify the exact duration of monitoring before selecting 93243; recordings of 48 hours or less require 93241, while recordings of 7-15 days require 93245
Impact: Incorrect duration coding can result in $50-100 payment differential and trigger audits; 93243 pays $226.43 vs different rates for other duration codes
Bill 93243 only once per monitoring period regardless of how many times the physician reviews the data; this is for the final comprehensive scan analysis and report
Impact: Duplicate billing results in 100% denial of second claim and potential fraud investigation; each monitoring session should generate only one 93243 claim
Ensure the hookup/recording code (93241 for patient-activated or 93242 for physician-reviewed recording) was billed separately by the appropriate entity before billing 93243
Impact: Missing hookup codes may trigger payer edits requiring documentation of who performed technical component; proper sequencing ensures full $226.43 reimbursement
Document correlation between patient symptom diary entries and ECG findings in the final report; Medicare and commercial payers increasingly audit for clinical utility
Impact: Lack of symptom correlation increases denial risk by 30-40%; comprehensive documentation supports medical necessity and protects full $226.43 payment
Do not bill 93243 with full analysis codes (93227, 93229) for the same monitoring period; scan analysis and full analysis are mutually exclusive
Impact: Bundling edits will deny the second code at 100%; choose scan analysis (93243) when automated scanning is used or full analysis (93227) when complete manual review is performed

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Frequently asked questions

What is the difference between CPT 93243 and 93227?

CPT 93243 is for scan analysis with report using automated scanning assistance for extended ECG monitoring (48hr-7days), while 93227 is for full analysis with complete manual physician review of the entire recording. Scan analysis (93243) is appropriate when computer algorithms pre-screen the data and the physician reviews flagged events plus representative samples. Full analysis (93227) requires physician review of all recorded data. These codes are mutually exclusive for the same monitoring period.

How much does Medicare pay for CPT 93243 in 2025?

Medicare pays $226.43 for CPT 93243 in 2025 based on the national average non-facility rate. This rate is the same for both facility and non-facility settings. The code has 7.0 total RVUs (6.99 PE RVU, 0.01 MP RVU, 0 work RVU) multiplied by the 2025 conversion factor of 32.3465.

Can CPT 93243 be billed with a new patient visit on the same day?

Yes, CPT 93243 can be billed with an E/M visit code on the same date of service when the physician interprets the extended ECG monitoring and also provides a separately identifiable evaluation and management service. No modifier 25 is needed on 93243 as it is a diagnostic test code, but modifier 25 should be appended to the E/M code to indicate it was a distinct service from the ECG interpretation.

What diagnosis codes support medical necessity for CPT 93243?

Common supporting diagnoses include R00.2 (palpitations), I48.91 (atrial fibrillation), R55 (syncope), I49.9 (cardiac arrhythmia unspecified), R00.0 (tachycardia), I47.1 (supraventricular tachycardia), and I47.2 (ventricular tachycardia). The diagnosis should support the need for extended monitoring beyond 48 hours, typically due to intermittent symptoms that require longer capture periods or failed shorter-duration monitoring.

How many days of monitoring does CPT 93243 cover?

CPT 93243 covers extended ECG monitoring for more than 48 hours (2 days) but less than 7 days. If monitoring is 48 hours or less, use CPT 93241 instead. If monitoring extends to 7-15 days, use CPT 93245. If monitoring exceeds 15 days up to 30 days, use CPT 93247. Accurate duration documentation is critical for correct code selection.

Can CPT 93243 be billed multiple times for the same patient?

CPT 93243 can be billed for multiple separate monitoring periods for the same patient, but only once per monitoring session. Each discrete episode of extended ECG monitoring (with new hookup and separate recording period) generates one 93243 claim. Repeat billing for the same monitoring data or multiple interpretations of a single session will be denied as duplicate. Medical necessity must support each separate monitoring episode.

Is prior authorization required for CPT 93243?

Prior authorization requirements vary by payer and patient-specific coverage. Medicare traditionally does not require prior authorization for 93243 when medical necessity is met, but Medicare Advantage plans often do require it. Most commercial payers require prior authorization for extended cardiac monitoring services. Always verify authorization requirements with the specific payer before service to avoid denials. Some payers may require documentation of failed shorter-duration monitoring before approving extended monitoring.