CPT 93225Cardiology

Xtrnl ecg rec<48 hrs rec

CPT code 93225 covers the professional interpretation and report of an external electrocardiogram (ECG) recording that monitors heart rhythm for up to 48 hours, typically using a portable Holter monitor that patients wear at home.

Showing rates for

National Average

Base Medicare rate

$17.47

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)

0.53

MP RVU

0.01

Total RVU

0.54

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

NCCI bundling edits

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Billing tips

Always bill 93225 with hookup code 93224 and scanning/analysis code 93226 for complete monitoring service
Impact: Billing all three codes together yields total reimbursement of approximately $125-150 versus only $17.47 for recording alone
Document exact duration of recording period in hours to distinguish from <48 hour (93225) versus 48+ hour monitoring (different code required)
Impact: Incorrect duration documentation causes automatic denials; using wrong code can result in $50-100 reimbursement variance
Verify patient wore monitor for minimum of 18-20 hours to justify medical necessity for up-to-48-hour monitoring
Impact: Medicare and commercial payers frequently deny claims for insufficient recording time, requiring appeals and delaying payment 45-60 days
Bill all three components (93224, 93225, 93226) on the same date of service using the date monitoring was initiated
Impact: Splitting dates triggers bundling edits and denials; proper same-day billing prevents 15-20% claim rejection rate
Check for existing recent Holter monitoring within 30 days before ordering to prevent medical necessity denials
Impact: Repeat monitoring without documented clinical change results in denial of entire episode (approximately $125-150 lost revenue)
Use place of service code 11 (office) or 22 (outpatient hospital) consistently across all three Holter codes
Impact: Mismatched POS codes between component services trigger claim edits and payment delays; both facility and non-facility rates are $17.47 for 93225

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 93225 in 2025?

The 2025 Medicare national average reimbursement for CPT 93225 is $17.47 for both facility and non-facility settings. This rate is based on 0.54 total RVUs multiplied by the 2025 conversion factor of 32.3465.

Can CPT 93225 be billed alone or must it be billed with other codes?

CPT 93225 should not be billed alone. It must be billed with CPT 93224 (hookup and recording) and CPT 93226 (scanning, analysis, and interpretation) to represent the complete Holter monitoring service. Billing 93225 alone typically results in denial for incomplete service.

What is the difference between CPT 93224, 93225, and 93226?

CPT 93224 covers hookup, recording, and disconnection; 93225 covers the external ECG recording up to 48 hours; and 93226 covers scanning, analysis, and physician interpretation with report. All three codes together represent the complete ambulatory ECG monitoring service.

How many hours of recording are required for CPT 93225?

CPT 93225 covers continuous external ECG recording for up to 48 hours. While no absolute minimum is specified, most payers expect at least 18-24 hours of adequate recording to justify medical necessity and distinguish from brief monitoring. Recordings exceeding 48 hours require different CPT codes (93227).

What RVUs are assigned to CPT 93225 in 2025?

CPT 93225 has 0 work RVUs, 0.53 practice expense RVUs (both facility and non-facility), 0.01 malpractice RVUs, for a total of 0.54 RVUs in 2025 according to the CMS Physician Fee Schedule.

Can CPT 93225 be billed more than once for the same patient in a short period?

Repeat Holter monitoring within 30 days typically requires strong documentation of medical necessity, such as new symptoms, medication changes, or intervening cardiac events. Most Medicare contractors and commercial payers will deny repeat monitoring without documented clinical justification for the repeat study.

Is prior authorization required for CPT 93225?

Prior authorization requirements vary by payer and region. Many Medicare Advantage plans and commercial insurers require prior authorization for ambulatory cardiac monitoring including 93225, while Original Medicare typically does not. Always verify payer-specific requirements before service to prevent denials.