Radiology Billing Services
Radiology billing is governed by two universal rules and one industry-specific reduction. The two rules: every diagnostic imaging study has a technical component (TC modifier — equipment, technologist, supplies, facility) and a professional component (modifier 26 — physician interpretation and report), and every claim has to identify which component is being billed. A radiology group that owns its equipment and employs the radiologist bills global (no modifier); a group that only reads studies for an outside imaging center bills 26-only; a hospital outpatient department bills TC. The industry-specific reduction: Multiple Procedure Payment Reduction (MPPR) applies a 50% TC haircut to the second and subsequent diagnostic imaging studies performed in the same session on the same patient — a chest CT plus abdomen-pelvis CT pair pays the higher-value study at 100% TC and the second at 50% TC, with the professional component (26) reduced 5% on the second and subsequent studies under the same family. Layer on the 2025 mandatory Clinical Decision Support consultation requirement under the AUC program (the consultation ID has to be on the claim for advanced imaging — MRI, CT, PET, nuclear), the radiology benefit manager (eviCore, AIM, NIA) prior auth gate at every commercial plan, and the contrast-coding split where MRI brain without contrast (70551), with contrast (70552), and with-and-without (70553) are three distinct codes — and the result is a coding surface where the modifier discipline alone determines whether a 6-radiologist group captures or forfeits hundreds of thousands a year. This page covers how radiology billing actually plays out across MRI, CT, mammography, ultrasound, and IR, and what stops the most common revenue leaks at each one.
Who This Page Is For
Common Billing Friction in Radiology
TC/26 split — the per-study modifier discipline
Every diagnostic imaging study has a TC and a 26 component. A radiologist reading a study performed at an outside hospital bills 26-only on 70553 ($95–$110 of the $285 global rate). A free-standing imaging center owning its equipment but contracting reads to a teleradiology group bills TC-only ($175–$190 of the global). A hospital-employed radiologist reading hospital-owned studies bills nothing — the hospital captures the global. Misapplying the modifier to the wrong component is the single most common audit finding in radiology billing. Practices that bill global when they only own one component double-bill; practices that bill component when global was earned forfeit half the revenue.
MPPR — Multiple Procedure Payment Reduction on same-session imaging
When two or more diagnostic imaging studies in the same family are performed in the same session, MPPR applies: the highest-value TC pays at 100%, every subsequent TC pays at 50%, and the professional components see a 5% reduction on the subsequent studies. CT abdomen and pelvis (74177) reimburses ~$195 at full TC; if a second CT chest (71250) is performed in the same session, the chest TC is reduced 50% to ~$80. Practices projecting expected revenue without MPPR awareness routinely overestimate cash flow on multi-study cases.
Contrast coding split — without (70551), with (70552), with-and-without (70553)
MRI and CT exam codes split into three distinct CPT codes by contrast usage, with three different fee schedules. MRI brain: 70551 without contrast (~$235), 70552 with contrast (~$265), 70553 with-and-without (~$285). MRI lumbar: 72148 without (~$225), 72149 with (~$245), 72158 with-and-without (~$265). A radiologist who performs a with-and-without study and codes it as 70551 (without only) loses $50 per case; a radiologist who codes a without-only study as 70553 triggers an audit when the contrast administration is absent from the report and the technologist log.
AUC Clinical Decision Support — the 2025 mandatory consultation ID
CMS's Appropriate Use Criteria (AUC) program requires the ordering provider to consult a qualified Clinical Decision Support Mechanism (CDSM) before ordering advanced imaging — MRI, CT, PET, nuclear medicine — and the resulting consultation ID has to appear on the rendering provider's claim with the appropriate G-code modifier (MA, MB, MC, etc., indicating the AUC outcome). Implementation has been delayed multiple times but the educational/operations testing phase is ongoing. Claims missing the AUC modifier on advanced imaging risk denial as the program enforces. Outpatient hospital departments and IDTFs (independent diagnostic testing facilities) are most exposed.
Mammography 77065/77066/77067 — the screening vs diagnostic split and tomosynthesis add-on
Mammography splits cleanly: 77067 (screening bilateral, 1 unit per claim, ~$145), 77065 (diagnostic unilateral, ~$110), 77066 (diagnostic bilateral, ~$165). The +77063 tomosynthesis add-on (3D mammography) is separately billable with screening, and G0279 is the add-on with diagnostic. A screening mammogram that finds an abnormality and converts to a same-day diagnostic mammogram requires careful coding — the same study cannot be billed as both screening and diagnostic. Practices often bill 77067 + 77066 on the same date for the same patient and trigger an MUE (Medically Unlikely Edit) denial.
Radiology-Specific Payer Issues We Watch For
Medicare
Issue: Clinical Decision Support (CDS) consultation is required for advanced imaging orders (MRI, CT, PET) starting 2025 — claims without a CDS consultation ID will be denied
Our approach: We verify CDS consultation compliance for every advanced imaging claim and ensure the consultation ID is included in the claim data before submission
UnitedHealthcare
Issue: Uses eviCore or other radiology benefit managers (RBMs) to authorize advanced imaging with criteria that are often stricter than clinical guidelines
Our approach: We submit prior authorization through UHC's designated RBM with clinical documentation configured to the specific authorization criteria used by that RBM
BCBS
Issue: Denies contrast-improved imaging studies when the indication does not meet their specific contrast necessity criteria, even when the radiologist recommends contrast based on clinical findings
Our approach: We document the clinical rationale for contrast administration and submit claims with supporting ICD-10 codes that meet BCBS contrast necessity criteria
Aetna
Issue: Bundles 3D reconstruction (76376/76377) with the base imaging study on many plans, denying the reconstruction as inclusive of the primary procedure
Our approach: We document the additional clinical value of 3D reconstruction and bill separately with supporting clinical indication when the reconstruction provides distinct diagnostic information
What We Handle
TC/26 modifier split discipline by practice setup
Per-study modifier application based on equipment ownership and reading arrangement — global when both components are earned, 26-only for outside-facility reads, TC-only for IDTFs without in-house interpretation. Includes purchased-interpretation documentation when reads are contracted to teleradiology groups.
MRI billing — 70551/70552/70553, 72148/72149/72158, 73721/73722/73723
Contrast-aware MRI coding for brain, spine, knee, shoulder, and abdomen with the without/with/with-and-without code split, modifier 26 application where the radiology group only reads, and MPPR projection for same-session multi-MRI cases.
CT billing — 74177, 71250/71260/71270, contrast hierarchies
CT abdomen-pelvis with contrast (74177), CT chest variants 71250/71260/71270, head 70450/70460/70470, with the contrast-coding split applied per study and MPPR awareness when CT and another imaging modality run in the same session.
Mammography — 77065, 77066, 77067 with tomosynthesis add-on
Screening 77067 with +77063 tomosynthesis add-on, diagnostic 77065/77066 with G0279 tomosynthesis add-on, and the screening-to-diagnostic conversion logic when an abnormality is detected. Includes BCBS and Medicare frequency rules on annual screening eligibility.
Ultrasound and IR procedure billing
Diagnostic ultrasound (76700 abdomen complete, 76705 abdomen limited, 76830 transvaginal) with TC/26 components, and interventional radiology procedure coding for vascular access, embolization, biopsies, and drainage with the radiologic supervision and interpretation (RS&I) codes paired to the procedure codes.
RBM prior auth and AUC consultation tracking
Prior authorization submission through eviCore, AIM, and NIA with the clinical decision support packet aligned to the specific RBM's appropriateness criteria, and AUC consultation ID tracking on advanced imaging claims with the corresponding G-code modifier.
Key Radiology CPT Codes
| CPT Code | Description | Avg. Reimbursement |
|---|---|---|
| 70553 | MRI brain with and without contrast | $285 |
| 74177 | CT abdomen and pelvis with contrast | $195 |
| 71046 | Chest X-ray, 2 views | $28 |
| 73721 | MRI knee without contrast | $215 |
| 77067 | Screening mammography, bilateral | $145 |
| 76536 | Ultrasound of head and neck, soft tissue | $95 |
| 72148 | MRI lumbar spine without contrast | $225 |
| 76497 | CT guidance for biopsy | $165 |
Real Results
The Challenge
A 6-radiologist group was losing professional interpretation revenue on studies read for referring practices, had 22% prior auth denial rates on advanced imaging, and was missing add-on codes for contrast and 3D reconstruction
Our Approach
We corrected professional component billing for all interpreted studies with modifier 26, implemented prior auth tracking for advanced imaging with CDS compliance, and captured contrast and reconstruction add-on codes
Key Outcomes
- check_circle Professional interpretation revenue increased 35%
- check_circle Prior auth denial rate dropped from 22% to 4%
- check_circle Contrast and reconstruction add-on revenue added $8,600 per month
- check_circle Annual practice revenue increased by $268K
“We were reading studies for outside practices and not billing the professional component. MedPrecision recovered hundreds of thousands in overlooked interpretation revenue.”
Why General Billing Teams Miss Radiology Issues
General billing staff handle dozens of specialties and rarely develop the depth needed for radiology coding nuances. Here is what gets missed.
Modifier and bundling errors
Specialty-specific modifier rules and CCI edits are frequently overlooked by teams that do not work exclusively in radiology.
Under-coding high-complexity visits
Radiology encounters often qualify for higher-level E/M codes, but generalist billers default to mid-level codes to avoid audit risk.
Missed payer-specific rules
Each payer has unique coverage and documentation requirements for radiology procedures that general teams rarely memorize.
Slow denial turnaround
Without specialty knowledge, appeal letters lack the clinical specificity needed to overturn radiology denials quickly.
“Radiology billing is fundamentally about two things: capturing the professional component for every study interpreted and never missing a contrast or reconstruction add-on. Those two corrections alone typically increase a radiology group's revenue by 25-35%.”
MedPrecision Billing Team
Radiology Billing and Coding Director
Transition Plan
Switching billing partners should not disrupt patient care or cash flow. Our transition plan is designed for zero downtime.
Discovery and Specialty Audit
We review your current radiology billing workflows, denial patterns, and payer mix to build a tailored onboarding plan.
System Integration
We connect to your EHR and practice management system, configure specialty-specific code sets, and validate charge capture workflows.
Parallel Billing Period
We run billing in parallel with your current process for 2-4 weeks to verify accuracy before taking over completely.
Full Transition and Reporting
Once validated, we assume full billing responsibility with monthly reporting dashboards and a dedicated account manager.
Radiology Billing Terms
- Professional Component (26)
- The radiologist's interpretation, report, and clinical correlation for an imaging study. Billed with modifier 26 when the radiology group does not own the equipment. Represents a significant portion of radiology practice revenue.
- Technical Component (TC)
- The equipment, facility, and technologist costs of performing an imaging study. Billed by the facility (hospital, imaging center) that owns the equipment. The TC + 26 = Global billing.
- Clinical Decision Support (CDS)
- A mandatory consultation tool for ordering providers of advanced imaging (MRI, CT, PET, nuclear medicine). CDS provides appropriateness criteria guidance and generates a consultation ID required on the claim for Medicare reimbursement.
- Radiology Benefit Manager (RBM)
- A third-party company (eviCore, AIM, NIA) contracted by commercial payers to manage prior authorization for advanced imaging studies. RBMs apply their own clinical criteria that may differ from standard medical guidelines.
- Contrast Enhancement Coding
- Imaging studies are coded differently based on whether contrast is used: without contrast, with contrast, or with and without contrast. Each version has a distinct CPT code with different reimbursement rates.
- 3D Reconstruction (76376/76377)
- Post-processing of imaging data to create three-dimensional images for clinical analysis. 76376 is for reconstruction not requiring an independent workstation, while 76377 requires one. Separately billable when clinically indicated.
Last updated: 2026-04-11
Common Questions
Common questions about radiology billing services.
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Request Review arrow_forwardHow do you handle technical and professional component billing?
We determine the correct billing model based on your practice arrangement. If your group owns the equipment and employs the radiologist, we bill globally. If you provide interpretation only, we bill the professional component (modifier 26). For outsourced readings, we ensure proper purchased interpretation documentation.
What is the process for getting advanced imaging authorized?
We submit authorization requests through the appropriate RBM portal with clinical decision support criteria including patient symptoms, prior imaging results, and clinical indication. We follow up on pending requests and appeal denials with additional clinical documentation when needed.
How do you code for CT or MRI studies with and without contrast?
We use the combination CPT codes designated for studies performed with and without contrast rather than billing separate codes for each phase. For example, CT abdomen with and without contrast uses 74178 rather than billing 74150 and 74160 separately. This prevents bundling denials and ensures correct reimbursement.
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