Echo transesophageal
CPT 93313 covers the physician's work in interpreting images from a transesophageal echocardiogram (TEE), where an ultrasound probe is placed down the throat to get detailed heart images. This is the interpretation-only code, not the full procedure.
RVU breakdown
Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High
Billing tips
Verify that you are billing 93313 appropriately as interpretation-only; if your physician also performed the probe manipulation and image acquisition, bill the complete code 93312 instead
Impact: Prevents $200-300 underpayment by ensuring you capture the full procedural value when appropriate
Ensure the written report is completed and signed before claim submission, documenting all required elements including indication, findings, measurements, and diagnostic impression
Impact: Reduces denial rate by 40-60% during audits; missing documentation is the most common reason for recoupment
Bill on the date of interpretation, not the date of image acquisition, and ensure time/date stamp on report matches claim date
Impact: Prevents timely filing denials and date-of-service mismatches that delay payment by 30-90 days
Coordinate with the facility performing the technical component to avoid duplicate billing; confirm they are billing 93314 (probe placement, image acquisition, physician attendance) while you bill 93313
Impact: Prevents unbundling denials and potential fraud flags that can trigger comprehensive audits
For intraoperative TEE interpretation, ensure the operative report clearly documents your separate and distinct interpretation service if billing separately from the surgical anesthesia team
Impact: Justifies medical necessity and prevents bundling denials worth $10.67 per study
Track your interpretation volume and response times; Medicare requires maintenance of competency through minimum volume thresholds for quality payment programs
Impact: Protects against MIPS penalties that can reduce overall Medicare reimbursement by up to 9% across all services
Common denials
Duplicate billing when complete TEE code (93312 or 93315) was already billed by the same provider or group
How to appeal: Submit records showing the 93313 interpretation was performed by a different physician at a different time/location than the procedural component; provide separate signed reports with timestamps; appeal with modifier 59 if truly distinct services
Missing or incomplete written report at time of claim submission
How to appeal: Submit the complete signed and dated interpretation report with all required elements; include proof of signature date showing it was completed within reasonable timeframe; request retroactive payment with corrected claim
Medical necessity denial when TEE interpretation not supported by diagnosis codes or clinical indication
How to appeal: Provide clinical documentation supporting medical necessity (e.g., valve disease evaluation, endocarditis, stroke workup, pre-procedural assessment); submit relevant prior studies, referring physician notes, and clinical guidelines supporting TEE use for the indication
Incorrect use of 93313 when provider actually performed complete service including probe placement
How to appeal: If appeal is appropriate, submit operative or procedure notes proving another provider performed probe manipulation while you only interpreted; otherwise, withdraw claim and rebill with correct code 93312 with corrected claim filing
Frequently asked questions
What is the difference between CPT 93313 and 93312?
CPT 93313 is for interpretation only of a transesophageal echo study, paying $10.67 with 0.33 RVUs. CPT 93312 is the complete TEE service including probe placement, image acquisition, and interpretation, with significantly higher reimbursement. Use 93313 only when you are interpreting images acquired by another provider or at a separate time.
How much does Medicare pay for CPT code 93313 in 2025?
Medicare pays $10.67 for CPT 93313 in 2025 (both facility and non-facility rates are identical). This is based on 0.33 total RVUs (0.26 work RVU, 0.05 PE RVU, 0.02 MP RVU) multiplied by the 2025 conversion factor of 32.3465.
Can I bill 93313 with modifier 26?
No, modifier 26 is not typically needed with 93313 because this code already represents the professional component only. Using modifier 26 would be redundant and may cause claim processing delays or denials. The code is structured as an interpretation-only service by design.
What diagnosis codes support medical necessity for 93313?
Common supporting diagnoses include valvular heart disease (I34-I37 series), endocarditis (I33), atrial fibrillation with stroke risk (I48), cardiac source of embolism evaluation (I51.3), congenital heart disease assessment, pre-surgical cardiac evaluation, and suspected cardiac masses or thrombi. Documentation must clearly link the TEE interpretation to the clinical indication.
Can 93313 be billed on the same day as 93312?
Generally no, unless performed by completely different providers for distinctly separate TEE studies or sessions. Billing both by the same provider or group on the same day for the same study would be considered duplicate billing and result in denial. If you performed the complete service, bill only 93312.
What are the documentation requirements for billing 93313?
You must have a complete written interpretation report signed and dated by the billing physician, including clinical indication, systematic evaluation of cardiac structures, quantitative measurements, diagnostic impression, and comparison to prior studies if available. The report must demonstrate personal physician review of the images, not just technologist findings.
How many RVUs is CPT code 93313 worth in 2025?
CPT 93313 has 0.33 total RVUs in 2025, consisting of 0.26 work RVUs, 0.05 practice expense RVUs (both facility and non-facility), and 0.02 malpractice RVUs. This makes it one of the lower-value codes in the echocardiography family since it represents interpretation only without procedural work.