Do you need a referral for an MRI, CT scan, ultrasound or X-ray in Australia? Not always. The answer depends on Medicare rules, the type of imaging, radiation legislation and – importantly – the clinical responsibilities that come with performing a medical test.

It sounds like a simple question:

“Do I need a referral to have a scan?”

The answer is more complicated than yes or no.

In Australia, there are really two separate questions related to this topic:

Do you need a referral or request to receive a Medicare rebate?
Can an imaging clinic legally and ethically perform the scan if you are prepared to pay for it yourself?

These are not the same question.

And behind both sits an even more important issue:

What happens after the scan?

At MBR Health, we think this is the part of the conversation that is sometimes missed.

Medical imaging is not simply the production of pictures. It is part of a diagnostic process. A scan may provide reassurance – but it may also diagnose cancer, an aneurysm, infection, a fracture, significant vascular disease or another abnormality requiring treatment.

When that happens, the scan is not the end of the patient’s journey. It may be the beginning of it.

For a more detailed explanation of how reports, significant findings and follow-up are handled, read MBR Health’s guide to What Happens After a Medical Imaging Scan? Reports, Results and Follow-Up. What Happens After a Medical Imaging Scan? Reports, Results and Follow-Up

First: in Medicare terminology, it is usually a “request”

Patients and clinics commonly use the word referral, and we will use it throughout this article because it is the term most people recognise. Technically, however, Medicare distinguishes between a referral to another medical practitioner and a request for a diagnostic imaging service such as CT, MRI, ultrasound or X-ray.[1]

For most standard Medicare-funded diagnostic imaging classified as an R-type service, Medicare benefits are not payable unless the imaging provider receives an appropriate request from an authorised requesting practitioner before the examination is performed.[2] The request needs to identify the examination being requested and contain enough information for the imaging provider to understand why it is required.

For many Medicare items, the clinical indication also matters.

It is therefore not enough to simply write:

“MRI”

“CT”

without sufficient clinical information where that information is necessary to establish the appropriate examination or Medicare eligibility.

There are limited exemptions and some non-requested diagnostic imaging items, so the rules are not literally identical for every examination.

But for the patient, the useful general rule is:

If you want Medicare to contribute towards a diagnostic scan, assume that you need an appropriate referral/request that identifies the examination and provides the relevant clinical indication.

MBR Health explains its own referral, booking and Medicare arrangements on our For Patients page. MBR Health – For Patients, Referrals and Appointments

Why does the clinical indication matter?

A referral should not simply tell the radiology clinic which body part to scan.

It should help explain what question needs to be answered → That distinction can completely change the examination (especially at a clinic that is performing more advanced scanning rather than simple generic tests).

For example, “MRI knee” may sound specific.

But is the question:

acute ACL rupture?
meniscal tear?
stress fracture?
infection?
tumour?
postoperative complication?
cartilage assessment?

Similarly, “CT abdomen” can represent very different examinations depending on whether the clinical concern is:

renal stone
appendicitis
liver lesion
pancreatic disease
cancer staging
arterial pathology
gastrointestinal bleeding.

The clinical question influences body coverage, MRI sequences, radiation parameters, contrast use, contrast timing and image reconstruction. This is one reason a referral is clinically valuable even when the patient is paying privately.

The radiology department should not simply be asking:

“What scan does the patient want?”

It should be asking:

“What are we trying to diagnose, and is this the correct examination to answer that question?”

MBR Health explains why different tests answer different clinical questions in MRI, CT, Ultrasound or X-Ray: How to Choose the Right Imaging Test. MRI, CT, Ultrasound or X-Ray: How to Choose the Right Imaging Test

This is also why image quality is more than the name of the scanner. Protocol design and clinical expertise determine whether the examination actually answers the question being asked. Why Medical Imaging Quality Matters: Scanner, Protocol and Expertise

Can I just pay privately and have the scan without a referral?

This is where the answer becomes more nuanced.

Paying privately does not automatically remove the regulatory requirements around medical imaging.

The rules also differ according to the imaging modality.

CT and X-ray are different because they use ionising radiation

CT and conventional X-ray expose the patient to ionising radiation.

Australian radiation-protection principles require medical radiation exposure to be justified – in simple terms, the expected medical benefit must outweigh the potential radiation harm – and then optimised, meaning the necessary diagnostic information should be obtained using an appropriately controlled radiation dose.[3]

State and territory legislation then governs how these principles are implemented.

For example, in Queensland, a diagnostic procedure involving ionising radiation must be requested by an authorised person before a licensed practitioner can perform it, subject to defined legislative provisions.[4]

In other words:

Simply offering to pay privately does not give a patient an unrestricted ability to order their own CT or X-ray.

There still needs to be clinical justification and compliance with the applicable radiation legislation.

A patient can choose to spend their money on many things. But healthcare professionals have their own legal and professional obligations. A patient’s willingness to pay does not remove the healthcare provider’s duty to decide whether an exposure to ionising radiation is appropriate.

Patients having CT at MBR Health can read our CT Scan: What to Expect Before, During and After Your Appointment guide, which explains how the referral question influences CT coverage, radiation settings and contrast protocol. CT Scan: What to Expect Before, During and After Your Appointment

For patients interested in the technology itself, MBR Health also explains how our detector-based Spectral CT provides additional information beyond conventional CT. What Is Spectral CT? A Simple Patient Guide

What about MRI or ultrasound?

MRI and ultrasound are different. Neither uses ionising radiation.

The radiation-specific legislative requirements applying to CT and X-ray therefore do not apply to MRI and ultrasound in the same way.

This is one reason you may see some providers advertising privately funded MRI examinations – particularly screening MRI – without a referral.

But that does not mean there are no clinical responsibilities.

There are still questions of:

clinical appropriateness
informed consent
MRI safety
contrast safety where applicable
limitations of the examination
false-positive and false-negative results
incidental findings
communication of significant abnormalities
follow-up.

Australian diagnostic imaging standards require patients to receive appropriate information about an examination and its risks and to undergo the relevant safety assessment before imaging.

So a privately funded scan is not simply a commercial transaction.

It SHOULD remain as healthcare.

For patients undergoing MRI, our guide MRI Scan: What to Expect Before, During and After Your Appointment explains safety screening, preparation, contrast and what happens to the result. MRI Scan: What to Expect Before, During and After Your Appointment

Patients comparing MRI services may also find How to Choose an MRI Provider in Australia useful, because examinations carrying the same name can differ substantially in protocol, resolution and interpretation. How to Choose an MRI Provider in Australia

Patient autonomy matters – but informed consent has to be genuinely informed

Modern medicine appropriately places considerable weight on patient autonomy. Competent adults are generally entitled to make decisions about their own bodies. People undergo elective cosmetic surgery. They may choose significant cosmetic augmentation. In healthcare, adults are also entitled to make choices that another person might not make for themselves.

But there is an important distinction:

The right to make your own healthcare decision does not mean a healthcare provider is obliged to perform anything you request.

The provider still has professional obligations.

For medical imaging, meaningful consent should include an understanding of questions such as:

What can this scan detect?
What can it not reliably detect?
Could another test be better?
Is there radiation?
Is contrast required?
What are the risks?
What is the likelihood of incidental findings?
Could the scan produce false reassurance?

And then there is perhaps the most important question:

What happens if the scan finds something?

That last question is why referrals are not simply bureaucracy.

MBR Health has discussed this particularly in the context of broad screening MRI. A scan marketed as being available “without a referral” still needs an appropriate pathway for limitations, unexpected findings and subsequent investigation. Whole-Body MRI Is Not a Diagnostic Shortcut

Finding disease creates responsibility

Imagine someone books a scan privately because they are curious about their health – They feel completely well.

The examination then demonstrates a potentially malignant renal mass.

Or significant carotid disease.
Or a pulmonary embolus.
Or an intracranial aneurysm.
Or an abnormality requiring additional imaging within weeks rather than months.

At that moment, the entire nature of the encounter changes.

The patient no longer simply wanted information. They now have a medical diagnosis or potentially important abnormality that requires interpretation, explanation and a plan.

This is one of the reasons the traditional Australian medical-imaging model has a referring clinician at one end of the process and a radiologist at the other.

The radiologist answers the imaging question.

The referring doctor integrates that answer with:

symptoms
physical examination
medications
pathology results
family history
other medical conditions
previous investigations
the patient’s overall clinical circumstances.

The referring clinician can then determine what happens next.

That might mean:

nothing
repeat imaging
blood tests
another imaging modality
a biopsy
specialist referral or, occasionally,
urgent medical treatment.

This is exactly why MBR Health’s patient guide on reports, results and follow-up recommends review with the referring clinician when the report recommends another step. Understanding Reports, Results and Follow-Up After Your Scan

A radiologist makes diagnoses – but usually does not provide your ongoing medical care

Radiologists are specialist medical doctors whose expertise includes selecting, supervising, interpreting and performing medical imaging. But a radiology clinic is generally not the patient’s longitudinal treating medical service.

We may diagnose the abnormality. We may understand its imaging implications in considerable detail. We may recommend what investigation should happen next.

→ But we may not know everything else about the patient’s health that their GP or treating specialist knows, and we are generally not responsible for coordinating their ongoing multidisciplinary care.

That is why communication matters.

A life-changing finding should not simply appear in a PDF report sitting in a patient portal. It has to reach someone capable of understanding its clinical significance and progressing it appropriately.

Could a self-referred scan ever be reasonable?

Yes, potentially – particularly for some privately funded non-ionising examinations – but only where the legal requirements of the relevant jurisdiction and modality are satisfied and the clinic has an appropriate clinical-governance framework.

In our view, several things need to be true.

The examination should have a reasonable clinical or screening purpose.
The patient should understand its benefits and limitations.
Relevant risks should be explained.
There should be a clear process for communicating the results.
And, critically, there must be a defined escalation pathway if something important is discovered.

That may mean requiring the patient to nominate their GP. It may mean obtaining permission to contact another treating practitioner. It may mean direct communication by the radiologist when a significant finding is discovered.

For urgent findings, it may require immediate clinical escalation.

“No referral required” should never mean “no clinical responsibility.”

Why MBR Health usually asks for a referral

At MBR Health, we generally require a referral for MRI, CT, ultrasound, X-ray and diagnostic procedures, with limited exceptions for specified services.

That policy is not designed to create an unnecessary barrier between patients and imaging.

It exists because we believe the referral performs several important functions.
It establishes the clinical question.
It gives us relevant medical information.
It allows us to select and optimise the examination.
It may establish Medicare eligibility.
It identifies the clinician responsible for integrating the result into the patient’s broader medical care.
And it creates a clear communication pathway if we discover something unexpected.

A referral does not reduce patient autonomy.

Properly used, it makes the imaging process safer and more useful. We do however appreciate that personal circumstances vary and if you need assistance please contact our clinic.

You can read MBR Health’s current referral requirements, download a referral form or upload an existing referral through our For Patients page. MBR Health Referrals and Bookings

Does my referral have to say MBR Health?

No.

This is another common misunderstanding. If your GP or specialist has given you a valid imaging referral, you are generally free to choose your imaging provider.

At MBR Health, we accept valid referrals even when another radiology practice or hospital is printed on the form.

So a referral saying another provider’s name does not necessarily mean that is where you have to go. If you would prefer your MRI, CT, ultrasound or X-ray to be performed at MBR Health, you can submit the referral to our team and we can confirm whether we provide the requested examination.

Upload or Submit Your Referral to MBR Health

Can the radiologist change the scan my doctor requested?

Sometimes the imaging team may identify that the examination requested is not the most appropriate way of answering the clinical question.

This is another reason the clinical information on the referral matters.

Radiology works best as a medical conversation rather than a purchase order.

The objective should not be to perform the most technologically impressive examination.

The objective is to select and perform the test capable of answering the patient’s clinical question appropriately.

For a comparison of the strengths and weaknesses of different modalities, see MRI, CT, Ultrasound or X-Ray: How to Choose the Right Imaging Test. How to Choose the Right Imaging Test

So – do I need a referral for a scan in Australia?

The short answer is – sometimes.

If you want a Medicare rebate for most standard diagnostic imaging, you will usually need an appropriate request from an eligible healthcare practitioner, and the request needs sufficient clinical information to satisfy the requirements of the examination and relevant Medicare item.[1,2]

For CT, X-ray and other ionising-radiation examinations, private payment does not simply bypass radiation-safety legislation or the need for the exposure to be clinically justified.

For privately funded MRI and ultrasound, there may be circumstances where imaging can legally be provided without the same radiation-related request requirement, but that does not remove the imaging provider’s obligations regarding appropriateness, informed consent, safety and follow-up.

And from our perspective, there is another question that matters at least as much as whether a referral is technically required:

Who is looking after you when the scan finds something?

Medical imaging should not finish with the image. It should finish with the right information reaching the right person, being properly understood, and – where necessary – being acted upon.

That is why the referral remains such an important part of medical imaging in Australia.

Frequently Asked Questions

Do I need a referral for an MRI in Australia?

For Medicare-funded MRI, the relevant Medicare requesting requirements must be satisfied and the clinic must have a government rebate number associated with it. Privately funded MRI may be treated differently because MRI does not use ionising radiation, you may be eligible for an MRI without a referral depending on your circumstances and the protocols in place at the clinic you are being imaged with.

You can read more about the examination itself in our MRI patient guide. MRI Scan: What to Expect Before, During and After Your Appointment

Do I need a referral for a CT scan in Australia?

CT uses ionising radiation and is subject to radiation-safety legislation as well as Medicare rules. In Queensland, diagnostic radiation procedures must be appropriately requested by an authorised person. Paying privately does not simply remove this requirement.

For more information about CT at MBR Health, see our CT patient guide. CT Scan: What to Expect Before, During and After Your Appointment

Can I get an ultrasound without a referral?

Some privately funded ultrasound services may be possible without a Medicare request depending on the service and provider because ultrasound does not use ionising radiation. However, without an eligible request the examination will generally not attract the applicable Medicare benefit, and many clinical radiology practices require a referral so the correct examination is performed and the result has an appropriate clinical pathway.

Can I get an X-ray without a referral?

X-ray uses ionising radiation. Applicable state or territory radiation legislation must therefore be satisfied; it is not simply a matter of electing to pay privately.

Can I take my referral to a different radiology clinic?

Yes. MBR Health accepts valid referrals even if another imaging provider is printed or written on the referral form. MBR Health Referral Information

Why does the clinic need to know my symptoms?

The clinical information helps the radiologist determine whether the requested scan is appropriate and how it should be performed. It can affect the protocol, body coverage, use of contrast, radiation exposure and interpretation of the examination.

What happens if my scan finds something unexpected?

The significance depends on the finding. Some abnormalities need no action, while others require surveillance, another imaging test, specialist review or urgent treatment. This is one of the reasons a defined communication and follow-up pathway is important. What Happens After a Medical Imaging Scan?

References

Services Australia. Refer or request Medicare services: Requests for diagnostic imaging services. Australian Government.
Medicare Benefits Schedule. Requests for R-type Diagnostic Imaging Services. Australian Government Department of Health, Disability and Ageing.
Australian Radiation Protection and Nuclear Safety Agency. Code for Radiation Protection in Medical Exposure (RPS C-5). Canberra: ARPANSA.
Queensland Health. Request or prescribe a diagnostic or therapeutic procedure. Queensland Government.
Australian Commission on Safety and Quality in Health Care. Diagnostic Imaging Accreditation Scheme.
Royal Australian and New Zealand College of Radiologists. Standards of Practice for Clinical Radiology.
Australian Commission on Safety and Quality in Health Care. Making informed choices: Informed consent.
Royal Australian and New Zealand College of Radiologists. Standards of Practice for Clinical Radiology: Communication of Imaging Findings and Reports.
MBR Health. For Patients: Referrals and appointments.