CPT 93018Cardiology

Cardiovascular stress test

CPT 93018 covers the interpretation and report portion of a cardiovascular stress test, where a physician reviews the test results and documents findings. This is the professional component when the provider reads the stress test but doesn't own the equipment or supervise the test itself.

Showing rates for

National Average

Base Medicare rate

$13.59

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

0.3

PE RVU (NF)

0.11

MP RVU

0.01

Total RVU

0.42

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

NCCI bundling edits

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Billing tips

Verify payer-specific requirements for professional component billing - some payers require 93018 while others expect 93015 with modifier 26
Impact: Billing wrong code can result in 100% denial; proper code selection ensures $13.59 payment versus $0
Document interpretation within 24-48 hours of test performance and ensure written report is signed and dated in medical record
Impact: Delayed or missing documentation is a top audit trigger; timely completion protects the $13.59 reimbursement
Never bill 93018 with 93015, 93016, or 93017 for the same stress test - these codes represent different components of the same service
Impact: Unbundling results in automatic denial of duplicate codes and potential fraud investigation
Ensure place of service code matches interpretation location (typically POS 22 for outpatient hospital, 21 for inpatient)
Impact: Incorrect POS may trigger denial; both facility and non-facility rates are $13.59 but POS must match service location
Link appropriate ICD-10 codes demonstrating medical necessity such as chest pain (R07.9), CAD (I25.10), or dyspnea (R06.02)
Impact: Weak or non-specific diagnosis codes increase denial risk by 30-40%; specific diagnoses support medical necessity
Bill only when you performed the interpretation independently - reading resident or fellow interpretations without your own independent review does not support billing
Impact: Teaching physician requirements mandate independent interpretation for full payment; non-compliance risks $13.59 recoupment per case

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Frequently asked questions

What is the difference between CPT 93018 and 93015?

CPT 93015 is the global code that includes supervision, interpretation, and report for a cardiovascular stress test. CPT 93018 represents only the interpretation and report portion when billed separately by a physician who did not supervise the test performance. Use 93018 when you're only reading the test results, not supervising the patient during the procedure.

How much does Medicare pay for CPT 93018 in 2025?

Medicare pays $13.59 for CPT 93018 in 2025 based on the national average rate. This applies to both facility and non-facility settings. The code has 0.42 total RVUs (0.3 work RVU, 0.11 practice expense RVU, 0.01 malpractice RVU) multiplied by the 2025 conversion factor of 32.3465.

Can I bill CPT 93018 with modifier 26?

Generally no. CPT 93018 already represents the professional component (interpretation and report) only, so adding modifier 26 is redundant and may cause claim denials. Some payers may require it for system processing, so verify payer-specific requirements, but CMS does not require modifier 26 with 93018.

When should I use CPT 93018 versus 93016 and 93017?

Use 93018 when you perform only the interpretation and report. Use 93016 for supervision only (monitoring patient during test), and 93017 for tracing only (technical component with equipment). These are mutually exclusive components - never bill 93018 with 93016, 93017, or the global code 93015 for the same test.

What documentation is required to bill CPT 93018?

You must have a signed, dated interpretation report that includes review of ECG findings, ST-segment changes, arrhythmias, hemodynamic response, symptoms, reason for termination, and diagnostic impression. The report should reference the specific stress test protocol and demonstrate your independent medical decision-making in analyzing the results.

How many RVUs is CPT 93018 worth?

CPT 93018 has 0.42 total RVUs for 2025, consisting of 0.3 work RVUs, 0.11 practice expense RVUs (both facility and non-facility), and 0.01 malpractice RVUs. This is a relatively low RVU value reflecting the interpretation-only nature of the service without patient contact during the procedure.

Can CPT 93018 be billed for pharmacologic stress tests?

Yes, CPT 93018 can be used for interpretation of both exercise and pharmacologic stress tests as long as you're billing only for the professional interpretation component. However, verify that the appropriate technical component codes are being used by the facility for pharmacologic agents (such as adenosine, regadenoson, or dobutamine administration).