Radiology Coding and Billing Guide for 2026

Radiology billing isn’t the same as other medical specialties; it has its own rules and billing requirements, which makes it complex. It’s professional and technical, with global radiology billing codes and modifiers—everything requires a keen understanding to ensure timely, accurate reimbursement.

However, radiology coding and billing is more than splitting components and modifiers; it also involves compliance, chart review, and documentation, where a minor mistake can lead to denials.

In today’s blog, we will guide you through radiology coding, billing, modifiers, compliance, and 2026 payer updates, so you can improve the process and get reimbursed quickly and accurately.

What is Radiology Coding and Billing?

Radiology coding and billing translates services and treatments into standardized CPT and ICD-10 codes that show what procedure was done and why. By assigning these codes, practices charge payers at contracted rates and receive reimbursement accordingly.

Radiology billing also includes eligibility verification and prior authorization for high-cost treatments, claim scrubbing, and payer submission. A minor mistake in these steps would cost your practice thousands of dollars.

Radiology Billing Workflow that Improves Collection Rate

Click to check the complete guide here!

What is Radiology Coding?

Radiology coding translates services or treatments into standardized numeric codes established by the American Medical Association (AMA) and updated each year.

Radiology coding falls under three categories;

Current Procedural Terminology (CPT): These are the codes used to refer to the procedure or treatment delivered to the patient. Radiology CPT codes range from 70010 to 79999 and cover imaging, X-ray, CT scans, MRI, and other radiology procedures.

International Classification of Diseases, Tenth Revision Codes (ICD-10): These codes describe symptoms and disease diagnoses, ranging from A00-Z99 for abnormal findings, laboratory findings, and factors influencing health status.
Healthcare Common Procedure Coding System (HCPCS): These codes bill equipment, supplies, portable imaging transport, and specific non-physician radiology services.

Step-by-Step Radiology Billing Process

Every step of radiology billing affects your payment, so ensure accuracy and precision throughout the process and don’t skip any step, as it can cost you thousands of dollars.

Here’s a step-by-step radiology coding and billing process; follow each step precisely to ensure accurate, on-time reimbursements.

Step 1: Verify Eligibility & Insurance Benefits

Before the patient’s visit, verify their insurance eligibility and benefits, including copays, deductibles, and coinsurance. This helps you determine the patient’s responsibility so you can collect upfront costs during the visit; if they have secondary or tertiary insurance, you can split the bill easily, avoiding future payment delays and denials.

Step 2: Obtain Prior Authorization

Imaging services are expensive; payers require pre-approval. If the patient needs a CT scan, ultrasound, or MRI, always obtain prior authorization before treatment to avoid denial.

Step 3: Assign CPT, ICD-10 & HCPCS Codes

After you treat the patient, capture charges by assigning the right codes and updating CPT codes based on the procedure. Avoid using deleted and old radiology CPT codes to avoid denial or rejection. Also, pair those CPT codes with the correct ICD-10 diagnosis and HCPCS codes, and ensure they match accurately.

Step 4: Append the Right Modifier

Once you have used the correct CPT codes, append the right modifiers to split the professional and technical components. Use modifier 26 to indicate the physician’s work, and modifier TC to indicate that the medical equipment and supplies are used from the hospital facility. Further, you can also use other modifiers based on the situation.

Read more about Modifiers in Radiology Billing and how they affect your reimbursements.

Step 5: Generate, Scrub & Submit Claims

When you have completed the coding process, then generate a claim via a CMS-1500 form or electronic claim 837P. Then scrub the claim to identify minor errors, spot and fix them, and submit it within the payer’s allowed timeframe after the date of service.

Step 6: Follow-Up, Track & Post Payments

Never forget: after you submit the claim, always monitor and track the status, whether the payer processed the claim or it is still in the clearinghouse. Once the payer has processed the claim and reimbursed for the service, ensure you post payments to the designated provider/practice and patient accounts.

Step 7: Manage Denials & Appeals

If you receive a “claim denial” from the payer, then begin with the appeal management process. Throughout the process, find the root cause, fix it, and resubmit the denied claim with the medically necessary documents and proof of why you’re requesting payment again—which helps you recover lost revenue quickly and smoothly.

Step 8: Patient Billing & Statements

Once billing goes smoothly and health insurance companies have received payment, start reconciling payments. This involves verifying payments against the ERA and EOB statements, ensuring you recover every penny, applying payments to the patient account, and keeping claims up to date.

Common Radiology CPT Codes & Descriptions

Here’s a quick comparison of common radiology CPT codes and descriptions to help you understand when and where to use them and streamline radiology coding and billing.

CPT Codes	Descriptions
70471	Non-contrast computed tomographic angiography (CTA) of head and neck.
70472	Add-on code reported in conjunction with primary CT or CTA procedure which indicates with or without contrast and image post-processing of CTA of the head.
70473	Computed tomography (CT) of cerebral perfusion analysis without a concurrent CT or CTA.
77402	2D photon therapy, level I radiation treatment.
77424	Technical component for radiation therapy in the form of irradiating X-rays.
77425	Technical component for radiation therapy by irradiating an electron beam.
77011	Computed tomography guidance to locate small targets using a 3D coordinate system.
77021	Imaging supervision and interpretation of reportable needle placement procedure under magnetic resonance guidance.
76506	Echoencephalography to diagnose intracranial abnormalities and conditions.
76510	B–scan and quantitative A–scan ultrasound imaging to examine the intraocular and orbital structures.

Common Radiology ICD-10 Codes & Descriptions

Here’s a short description of common radiology ICD-10 codes to help you understand when and where to use them and streamline radiology coding and billing.

ICD-10 Codes	Descriptions
R07.9	Unspecified chest pain.
R10.9	Unspecified abdominal pain.
R51.9	Unspecified headache.
M54.50	Low back pain, unspecified.
R06.02	Shortness of breath.
R42	Dizziness and giddiness.
Z12.31	Encounter for screening mammogram for malignant neoplasm of breast.
M79.609	Pain in limb, unspecified.
R91.8	Other abnormal findings on diagnostic image of lung.
R93.89	Abnormal findings on diagnostic imaging of other specific body structures.

Common Modifiers Used in Radiology Billing

Here are some common radiology modifiers to help you understand when and where to use them to improve the clean claim ratio.

Modifiers	Descriptions
26	Indicates the physician’s interpretation and diagnosis work.
TC	Indicates the use of medical equipment, supplies within the hospital or any other facility setting.
50	Same service or treatment is delivered on both sides of the patient’s body.
RT/LT	Treatment is performed on either side of the body, e.g., the right side (RT) or the left side (LT).
52	When the physician or radiologist intentionally reduced service/treatment.
53	Indicates that the treatment or service is limited due to the patient’s health and safety.
59	Indicates that the procedures are distinguished from others in the same encounter.
76	One provider repeats the same service multiple times.
77	Same service but handled by a different provider multiple times.

Radiology Coding and Billing Compliance

Radiology coding and billing compliance requires adherence to CMS guidelines, National Correct Coding Initiative (NCCI) edits, HIPAA regulations, and payer-specific billing policies. Practices must use accurate CPT and ICD-10-CM codes, apply appropriate modifiers, follow NCCI rules for code pairs, and maintain complete clinical documentation to support medical necessity.

HIPAA compliance also requires protecting patients’ protected health information (PHI) throughout the billing process. Regular coding audits and compliance checks help radiology practices identify billing errors, reduce claim denials, prevent improper payments, and minimize compliance risks.

Identify Coding Gaps & Compliance Issues

Stop revenue leakage by identifying coding gaps and compliance issues, and start getting reimbursed accurately and on time.

Get Free Billing Audit

Radiology Coding and Billing Best Practices

Follow these best practices to ensure accurate radiology coding and billing and improve your overall radiology revenue cycle.

Verify patient and insurance information: Confirm patient demographics, insurance eligibility, coverage details, and authorization requirements before providing services.
Use accurate CPT and ICD-10-CM codes: Select codes that reflect the radiology procedure performed, documented findings, and medical necessity.
Apply appropriate modifiers: Use modifiers such as 26 (professional component) and TC (technical component) when applicable to distinguish the services billed.
Follow NCCI edits: Check National Correct Coding Initiative (NCCI) procedure-to-procedure edits and medically unlikely edits to identify incompatible code combinations and units of service.
Meet CMS billing requirements: Follow applicable Medicare documentation, medical necessity, coding, and claim submission guidelines.
Maintain HIPAA compliance: Protect patients’ protected health information (PHI) during coding, billing, claim submission, and communication with payers.
Document medical necessity: Ensure physician orders, clinical indications, and supporting documentation justify the imaging service and meet payer requirements.
Check payer-specific policies: Review coverage rules, prior authorization requirements, and reimbursement policies to prevent avoidable claim rejections.
Audit claims before submission: Review codes, modifiers, units, diagnosis pointers, and documentation for errors before submitting claims.
Track denials and underpayments: Analyze denial reasons, correct claim errors, submit appeals when appropriate, and follow up on outstanding accounts receivable.
Stay updated on coding changes: Monitor annual CPT and ICD-10-CM updates, CMS guidance, NCCI edits, and payer policy revisions to maintain accurate billing practices.

Outsource Radiology Billing for Faster Reimbursements

Tired of denied claims and delayed payments? Our radiology billing services help you submit cleaner claims and get paid faster.

Connect Radiology Billing Experts

Frequently Asked Questions

What is radiology billing?

Radiology billing is the process of generating and submitting claims for services or treatment provided. It involves verifying eligibility, obtaining pre-approvals, assigning CPT and ICD-10 codes, appending modifiers, and ensuring compliance—everything needed to submit a claim and get paid.

What is the technical and professional component in radiology billing?

Radiology billing has two components, professional and technical, that determine reimbursement. The professional component (26) applies when a physician or technician performs diagnostic or interventional services. The technical component (TC) covers the use of medical equipment, machines, tools, or other supplies in the hospital or facility setting.

Book a Consultation

Fast Claims Processing

Reduced Denials

Better Revenue Visibility

Dedicated Support Team

Get Started Today

Save Up to

40%

On Billing Costs

Claim Your Savings