The Radiology Billing Cycle
Radiology billing differs from most specialties because the radiologist rarely sees the patient directly. The billing trigger is the completed interpretation, not a patient visit. This creates a workflow where the ordering physician initiates the revenue cycle, the technologist performs the study, and the radiologist generates the billable service through interpretation. Each handoff point is a potential source of billing errors or delays.
Step 1: Order Verification and Prior Authorization
Before performing the imaging study, verify the order for clinical appropriateness and insurance authorization. High-cost studies (MRI, CT, PET) frequently require prior authorization from the payer. The American College of Radiology (ACR) Appropriateness Criteria provide a framework for evaluating whether the ordered study is appropriate for the clinical indication. Some payers use radiology benefit management (RBM) companies like eviCore or AIM Specialty Health to manage imaging utilization.
Authorization requests should include the clinical indication, prior imaging results, and failed conservative treatment when applicable. Submit authorization 3 to 5 business days before the scheduled study. Performing a study without confirmed authorization puts the entire reimbursement at risk.
Step 2: Study Performance and Technical Capture
The technical component is captured when the study is performed. The charge includes equipment use, technologist time, contrast materials, and facility overhead. For freestanding imaging centers, this is the largest revenue component. Technical charges should be captured automatically through the RIS (Radiology Information System) when the study is completed and images are sent to PACS.
Step 3: Interpretation and Report Generation
The radiologist reviews the images and generates an interpretation report. The report must include: clinical indication, technique description, findings, and impression/conclusion. The professional component (modifier 26) is billable once the report is completed and signed. Report turnaround time directly affects billing speed: a report completed within 2 hours of study completion allows same-day claim submission. Reports delayed by 24 to 48 hours push claim submission back accordingly.
Preliminary reads and final reads create a billing consideration. Only the final, signed interpretation is billable. Preliminary reads by residents or fellows are not separately billable unless the attending radiologist performs a separate, documented interpretation.
Step 4: Coding and Claim Submission
Radiology coding must match the study performed to the correct CPT code, apply the appropriate modifier (26, TC, or global), pair the procedure code with the correct ICD-10 diagnosis code from the order, and include any additional codes for contrast, guidance, or add-on procedures. Claims should be submitted within 48 hours of report completion.
For radiology groups covering multiple facilities, each facility requires separate billing with the correct place of service code and facility NPI. A hospital-based radiologist reading studies from three hospitals submits three separate claim streams, each with modifier 26 and the respective facility information.
Step 5: Payment Reconciliation
Radiology payment reconciliation should compare received payments against the contracted rate for each CPT code by component. Create a fee schedule matrix mapping each high-volume code to each payer contracted rate for both professional and technical components. This matrix allows immediate identification of underpayments during payment posting.
Step 6: Denial Management
Radiology denials cluster around three categories: authorization failures on advanced imaging (MRI, CT, PET), medical necessity disputes where the ordering diagnosis does not support the study, and component billing errors (wrong modifier). Each category requires a different rework workflow. Authorization denials are typically non-recoverable. Medical necessity denials can be appealed with additional clinical information from the ordering physician. Component billing errors are corrected and resubmitted.