CPT 70482Radiology

Ct orbit/ear/fossa w/o&w/dye

CPT code 70482 covers a CT scan of the eye socket (orbit), ear structures, or skull base (fossa) performed twice—once without contrast dye and once with contrast dye injected into a vein. This two-phase imaging helps doctors see detailed structures and identify abnormalities like tumors, infections, or injuries.

Showing rates for

National Average

Base Medicare rate

$206.69

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

1.27

PE RVU (NF)

5.04

MP RVU

0.08

Total RVU

6.39

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

NCCI bundling edits

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Billing tips

Document specific medical necessity for BOTH the non-contrast and contrast phases in the ordering physician's notes and radiologist's report. Payers scrutinize why both phases were required rather than a single-phase study.
Impact: Prevents denials that could result in complete claim rejection ($206.69 loss) or downcoding to 70481 (without contrast only) resulting in approximately $90-100 reduction in reimbursement
Verify pre-authorization requirements before scheduling, as many commercial payers require prior authorization for CT with contrast. Track authorization numbers in patient record and on claim form.
Impact: Failure to obtain authorization results in 100% denial with zero payment and potential provider write-off of $206.69
Use modifier 26 or TC appropriately when professional and technical components are split between entities. Never bill the global code when components are performed at different locations.
Impact: Incorrect modifier use triggers audits and recoupment demands; proper split-billing ensures correct payment distribution and prevents overpayment recovery actions
Document contrast type, dosage, route, and time of administration in technical notes. Include assessment of renal function (eGFR/creatinine) within 30 days for patient safety and payer compliance.
Impact: Missing contrast documentation is a primary audit trigger resulting in claim denials; resubmission delays payment by 30-60 days minimum
Ensure the ordering diagnosis code specifically supports the anatomic area scanned. Generic codes like 'headache' may not support orbital/ear/fossa imaging without additional clinical context.
Impact: Diagnosis-to-procedure mismatch causes medical necessity denials; proper ICD-10 coding maintains the full $206.69 reimbursement

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Common denials

Medical necessity not established for both contrast and non-contrast phases; payer determines single-phase study (70480 or 70481) would have been sufficient

How to appeal: Submit clinical notes documenting specific indication requiring dual-phase protocol (e.g., tumor characterization, vascular assessment, infection extent). Include relevant literature supporting dual-phase necessity for the specific diagnosis. Reference ACR Appropriateness Criteria supporting the imaging choice. Provide previous imaging results if comparison warranted the enhanced protocol.

Lack of prior authorization or failure to meet clinical decision support/appropriate use criteria requirements under Medicare PAMA or commercial payer programs

How to appeal: Document that service was emergent/urgent and could not wait for authorization (if applicable). Provide clinical documentation supporting criteria from qualified Clinical Decision Support Mechanism (CDSM). Submit retroactive authorization request with peer-to-peer physician review. For Medicare, reference specific PAMA exceptions if applicable.

Insufficient time interval since previous similar imaging; payer policy requires minimum days between studies (commonly 30-90 days depending on indication)

How to appeal: Document acute change in clinical status, new symptoms, post-operative complication, treatment failure, or specific physician rationale for repeat imaging. Provide comparison of clinical findings between imaging dates. Include consultant recommendations specifically requesting updated imaging. Submit bridge notes showing progression or change necessitating earlier-than-typical repeat study.

Incorrect modifier usage or missing modifier causing bundling with other services or component billing errors (billing both global and split components)

How to appeal: Submit corrected claim with proper modifier (26, TC, or removal of incorrect modifier). Provide explanation of billing arrangement between technical and professional entities if split billing. Include contracted service agreements if components were legitimately separated. Request claim reprocessing rather than appeal if simple modifier correction resolves the issue.

Frequently asked questions

What is the Medicare reimbursement rate for CPT 70482 in 2025?

The 2025 Medicare national average reimbursement for CPT 70482 is $206.69 for both facility and non-facility settings. This rate is based on 6.39 total RVUs (1.27 work RVU, 5.04 PE RVU, 0.08 MP RVU) multiplied by the 2025 conversion factor of 32.3465. Actual payment varies by geographic locality using MAC-specific adjustments.

What is the difference between CPT codes 70481 and 70482?

CPT 70481 represents a CT of orbit/ear/fossa with contrast only (single acquisition after contrast administration), while CPT 70482 includes both without contrast AND with contrast (two separate acquisitions). Code 70482 requires performing the study twice—once before and once after contrast injection—and documenting medical necessity for both phases. The reimbursement for 70482 ($206.69) is significantly higher than 70481 due to the additional imaging series.

Does CPT 70482 require prior authorization from insurance?

Most commercial insurance plans and Medicare Advantage plans require prior authorization for CPT 70482 due to the use of contrast and higher cost. Traditional Medicare Part B does not require prior authorization but does require documentation of appropriate use criteria under PAMA regulations. Requirements vary by payer, so verify specific authorization rules before scheduling. Failure to obtain required authorization typically results in complete claim denial.

Can CPT 70482 be billed bilaterally with modifier 50?

No, CPT 70482 should not be billed with modifier 50 (bilateral procedure) because the code descriptor inherently includes imaging of bilateral anatomic structures (both orbits, both ears, or both sides of posterior fossa) within the field of view. The code is valued as a complete study and billing bilaterally would be considered incorrect coding and duplicate billing.

What diagnosis codes support medical necessity for CPT 70482?

Diagnosis codes supporting 70482 include orbital tumors (C69.x, D31.x), acoustic neuroma (D33.3), temporal bone infections (H60-H62, H65-H67), skull base lesions (C41.0, D16.4), orbital cellulitis (H05.01), Graves ophthalmopathy (H05.2), unexplained vision loss with orbital involvement (H53.x with H05.x), and post-traumatic orbital assessment (S02.3, S02.8). The diagnosis must specifically justify why both non-contrast and contrast phases are medically necessary.

How should I bill CPT 70482 when the radiologist and facility are separate entities?

When professional and technical components are split, the facility bills 70482-TC (technical component including equipment, technologist, and contrast materials) and the radiologist bills 70482-26 (professional component for interpretation and report). Never bill the global code (70482 without modifier) when components are separated. Both claims must use identical date of service and diagnosis codes. The TC and 26 payments together equal the global rate of $206.69.

What are the RVU values for CPT 70482 in 2025?

CPT 70482 has 2025 RVU values of: 1.27 work RVU, 5.04 practice expense RVU (both facility and non-facility), 0.08 malpractice RVU, totaling 6.39 total RVUs. These values are multiplied by the 2025 conversion factor of 32.3465 and adjusted by geographic practice cost indices (GPCI) to determine actual payment in each Medicare locality.