Medical nutrition therapy (MNT) is individual, diagnosis-based nutrition care from a registered dietitian. Medicare Part B covers it only for diabetes, kidney disease or a kidney transplant in the past 36 months: 3 hours in the first year and 2 hours a year after, with a doctor's referral and no cost to you (Medicare.gov, 2026).
What medical nutrition therapy actually is
"Medical nutrition therapy" sounds like a vague phrase, but in US health policy it has a precise meaning. Federal regulations define MNT services as "nutritional diagnostic, therapeutic, and counseling services" provided by a registered dietitian or nutrition professional to manage diabetes or kidney disease (42 CFR 410.130, Legal Information Institute). Outside Medicare, the term is used more broadly for any nutrition care that treats a diagnosed condition, as opposed to general healthy-eating advice.
Three features separate MNT from a wellness chat or a diet plan downloaded from the internet:
- It starts from a diagnosis. The dietitian works from your medical record, your test results and your medicines, not from a generic goal.
- It follows a structured process. Dietitians use the Nutrition Care Process: assessment, nutrition diagnosis, intervention, then monitoring and evaluation, repeated as your condition changes.
- It is delivered by a qualified professional. For Medicare, only a registered dietitian or a nutrition professional who meets federal training and licensing rules can provide it.
If you are not sure whether you need a dietitian, a nutritionist or your doctor, the short which nutrition professional quiz can help you work out who to see first.
Who qualifies for Medicare MNT
Medicare's benefit is narrow, and the details trip up both patients and clinicians. According to Medicare.gov, you qualify if you have diabetes or kidney disease, or you have had a kidney transplant in the last 36 months, and a doctor refers you.
How "kidney disease" is defined
The regulation defines renal disease as chronic renal insufficiency, end-stage renal disease when dialysis is not received, or the 36 months after a kidney transplant. Chronic renal insufficiency means reduced kidney function "not severe enough to require dialysis or transplantation", specified as a glomerular filtration rate (GFR) of 15 to 59 ml/min/1.73m². In practice, that covers what most clinicians call CKD stages 3 and 4. People with an earlier stage of kidney disease and normal-range GFR do not meet this definition unless they also have diabetes.
People on maintenance dialysis are excluded from the MNT benefit itself. Medicare.gov explains that if you have dialysis in a dialysis facility, nutrition services are part of your overall dialysis care.
How "diabetes" is defined
For many years Medicare's definition required specific test results, such as a fasting glucose of 126 mg/dL or more on two occasions. From 1 January 2024, CMS removed the test-based criteria, so "diabetes" now simply means "diabetes mellitus, a condition of abnormal glucose metabolism" (Medicare Claims Processing Manual, chapter 4, section 300). Gestational diabetes qualifies too, though the covered period ends when the pregnancy ends.
Who can refer you
Under current rules, the referral must come from a physician, meaning a doctor of medicine or osteopathy. The referring doctor documents the referral in your record, and the dietitian must put that doctor's National Provider Identifier on the claim. Claims without it are returned.
| Rule | What Medicare says | What it means for you |
|---|---|---|
| Qualifying conditions | Diabetes, chronic kidney disease with GFR 15 to 59, or a kidney transplant within 36 months | Other conditions, such as obesity alone, are not covered for MNT |
| Hours in first year | 3 hours | Unused hours do not carry over into the next calendar year |
| Hours in later years | 2 hours a year | A new referral is needed each calendar year |
| Extra hours | Allowed after a second referral for a change in diagnosis, condition or treatment | Ask your doctor to document the change |
| Who refers | A physician (MD or DO) | A nurse practitioner's referral does not qualify under current rules |
| Cost to you | Nothing, if you qualify | Check that the dietitian is enrolled in Medicare |
| Dialysis | Not covered as MNT for people on maintenance dialysis | Nutrition care is part of dialysis services instead |
How many hours Medicare covers, and how they are counted
Medicare covers 3 hours of MNT in your first calendar year and 2 hours of follow-up in each later year. The claims manual gives a clear example of the calendar-year rule: if you are referred for 3 hours but use only 2 by the end of December, the third hour is lost, and next year you are eligible for the 2 follow-up hours with a new referral.
Hours are billed in time units. The CMS manual lists the codes:
- 97802 for the initial assessment and intervention, individual, face to face, each 15 minutes. It is used only once, for the first visit.
- 97803 for reassessment and intervention, individual, each 15 minutes, used for every individual visit after the first.
- 97804 for group sessions of two or more people, each 30 minutes.
- G0270 and G0271, the individual and group codes used when a second referral in the same year adds hours because of a change in diagnosis, condition or treatment, "including additional hours needed for renal disease".
MNT and diabetes self-management training (DSMT) are separate benefits. CMS allows a person with diabetes to receive the full 10 hours of initial DSMT and the full 3 hours of MNT in the same period, but not both on the same day. Our guide to seeing a dietitian for diabetes explains how the two fit together in practice.
What happens in MNT sessions
The content of MNT depends on your diagnosis, but most episodes of care follow a similar arc.
The initial assessment
The first visit is the longest. The dietitian reviews your diagnosis and recent results, every medicine and supplement you take, your weight history, your usual eating pattern and the practical things that shape it: work, money, cooking facilities, culture and who you eat with. They then make a nutrition diagnosis, which is a specific statement of the problem they can treat, such as excessive sodium intake or inconsistent carbohydrate intake relative to insulin.
Intervention and follow-up
The intervention might be education, a structured eating pattern, a change in meal timing, a referral for cooking support, or coordination with your doctor about medicines. Follow-up visits check whether the plan is working, adjust it and catch problems early. For diabetes, results such as HbA1c and glucose patterns guide changes. For kidney disease, the dietitian watches kidney function, potassium, phosphate, protein intake and nutritional status.
Kidney disease in more detail
Kidney nutrition is technical. The National Kidney Foundation's KDOQI guideline, developed jointly with the Academy of Nutrition and Dietetics, covers six areas: nutritional assessment, MNT, dietary protein and energy, nutritional supplements, micronutrients and electrolytes, for people with CKD stages 1 to 5 not on dialysis, people on dialysis and people with a working transplant (Ikizler and colleagues, American Journal of Kidney Diseases 2020). Our renal diet guide covers the food side, and the guide to working with a renal and kidney disease dietitian explains what specialist care looks like.
Do not cut protein, potassium or phosphate on your own because you have read that kidney disease needs a restricted diet. Targets depend on your kidney function, your blood results, whether you have diabetes and whether you are losing weight unintentionally. Too much restriction can cause malnutrition, so changes should be guided by your kidney team and a dietitian.
What the evidence shows
The strongest summary comes from a position paper by the Academy of Nutrition and Dietetics, approved in September 2025 and published in the February 2026 issue of its journal. It reviewed 25 systematic reviews published between 2017 and 2024 and concluded that reviews with high or moderate certainty of evidence show MNT is likely effective in improving a range of outcomes in adults with prediabetes, type 1 and type 2 diabetes, obesity, prehypertension and hypertension, dyslipidaemia, chronic kidney disease, head and neck cancer and chronic obstructive pulmonary disease, compared with no MNT or standard care (Moloney and colleagues, Journal of the Academy of Nutrition and Dietetics 2026).
Two caveats are worth keeping in mind. First, the paper comes from the dietitians' own professional body, which also campaigns for wider coverage, so read it as a summary of evidence by an interested party, even though it grades the certainty of each finding. Second, "likely effective" across many conditions does not mean every person gains the same benefit. Outcomes depend on how many sessions you attend, how well the plan fits your life and whether the rest of your care is joined up.
The same paper names the barriers that keep people from getting MNT: too few dietitians in some areas, a lack of referrals from other clinicians, and a lack of payer coverage and reimbursement. Those barriers are the background to the current legislative push.
The Medical Nutrition Therapy Act debate
Medicare's MNT benefit was created by legislation in 2000 and took effect in 2002, and its two qualifying conditions have not changed since. Two bills now before Congress would widen it.
- H.R. 6199, the Medical Nutrition Therapy Act of 2025, was introduced in the House on 20 November 2025 by Representative Robin Kelly with bipartisan cosponsors (GovInfo).
- S. 3934, the Medical Nutrition Therapy Act of 2026, was introduced in the Senate on 26 February 2026 by Senators Susan Collins and Gary Peters and referred to the Finance Committee (GovInfo).
As introduced, the Senate bill would add prediabetes, obesity, hypertension, dyslipidaemia, malnutrition, eating disorders, cancer, gastrointestinal diseases including coeliac disease, HIV and AIDS, and cardiovascular disease, and would let the Secretary of Health and Human Services add other conditions. It would also allow physician assistants, nurse practitioners and clinical nurse specialists to refer, and clinical psychologists for eating disorders. The changes would apply to services furnished from two years after the bill becomes law.
The case for and against
Supporters argue that nutrition-related conditions drive a large share of Medicare spending, that the evidence base now covers far more than diabetes and kidney disease, and that people with obesity, heart disease or cancer currently pay out of pocket for care that could prevent complications.
The counter-arguments are mainly about cost and capacity. Any expansion of a Medicare benefit adds spending, and the bills leave much of the detail, such as which further conditions qualify, to the Secretary. There are also questions about workforce: the Academy's own position paper lists inadequate dietitian staffing in some areas as a barrier, so if referrals rose sharply, those areas might struggle to meet demand. Neither bill had become law as of October 2026, so current coverage rules still apply. If you need help with weight rather than diabetes or kidney disease, our guide to seeing a dietitian for weight loss explains the funding routes available today.
Private insurance and Medicaid
Outside Medicare, there is no single rule. Private insurers decide which diagnoses they will pay for, how many visits they allow and whether you need a referral or prior authorisation. Some cover MNT for a wide range of conditions; others cover diabetes and little else. Medicaid is run by each state, and federal rules leave many benefits to state choice (Medicaid.gov), so whether a dietitian is covered depends on your state and plan. Our guide on whether insurance covers a dietitian lists the questions to ask your plan, and our United States country guide sets out how each state licenses dietitians.
Some health systems and plans have also begun pairing dietitian visits with medically tailored meals or produce prescriptions, often described as food-is-medicine programmes. Our explainer on food is medicine looks at what those programmes include and what the evidence says.
If price is the deciding factor, our breakdown of how much a dietitian costs explains what Medicare pays per session and what drives private fees.
How to get MNT: a practical sequence
- Confirm your diagnosis is on record. For Medicare, the referral must state diabetes or renal disease. If you have CKD, ask for your latest GFR.
- Ask your physician for a written referral. Our guide to getting a dietitian referral explains what the referral should include.
- Find a Medicare-enrolled dietitian. Dietitians must be enrolled to bill Medicare, and must accept assignment.
- Book the initial assessment early in the year. Because hours reset each calendar year, starting in January gives you time to use all 3.
- Bring your records. Medicine list, recent blood results, glucose data or a food diary make the first session far more productive.
- Ask for a second referral if things change. A new diagnosis, a move to insulin or a fall in kidney function can justify extra hours.
Prefer a remote appointment? Many dietitians deliver MNT by video; our guide to working with an online dietitian explains how virtual sessions work.
Book a session with a dietitian
Common pitfalls
- Assuming any nutrition visit is MNT. A wellness consultation without a qualifying diagnosis will not be paid as MNT by Medicare.
- Letting hours lapse. Hours do not roll over.
- Missing complications of treatment. Long-term metformin can lower vitamin B12, which a dietitian may flag; the symptoms are listed in our guide to B12 deficiency.
- Overlooking pregnancy. Gestational diabetes qualifies, but only until the pregnancy ends, so book early; our gestational diabetes diet guide covers what sessions focus on.
- Changing medicines alone. A dietitian can tell your prescriber that your diet has changed, but only the prescriber should change doses.
Frequently asked questions
Does Medicare cover medical nutrition therapy?
Yes, for people with diabetes, chronic kidney disease or a kidney transplant in the past 36 months, under Medicare Part B. A physician must refer you, the service must come from a registered dietitian or qualifying nutrition professional, and you pay nothing if you qualify. Conditions such as obesity, high blood pressure or cancer are not covered for MNT on their own.
How many MNT hours does Medicare cover?
Medicare covers 3 hours in your first calendar year of MNT and 2 hours of follow-up in each later year, each needing a referral. Unused hours do not carry over. If your diagnosis, condition or treatment changes, your physician can make a second referral in the same year for additional hours, which are billed with separate codes.
What is the Medical Nutrition Therapy Act?
It is proposed legislation, introduced as H.R. 6199 in November 2025 and S. 3934 in February 2026, that would extend Medicare MNT to conditions including prediabetes, obesity, hypertension, eating disorders, cancer, coeliac disease and cardiovascular disease, and widen who can refer. As introduced, it would take effect two years after enactment. It had not passed as of October 2026.
Is medical nutrition therapy the same as seeing a nutritionist?
Not necessarily. MNT is diagnosis-based care delivered through a structured process, and for Medicare it must come from a registered dietitian or a nutrition professional who meets federal education, supervised-practice and licensing standards. "Nutritionist" can mean very different training depending on where you live, so check credentials before booking.
Does MNT have to be in person?
No. Medicare's 2026 list of telehealth services includes the individual and group MNT codes, and many dietitians offer video sessions. Coverage rules for telehealth location and technology have changed several times since 2020, so check with the dietitian's office that a remote visit will be billed correctly before you book.
Can I get MNT if I am on dialysis?
Not as a separate Medicare MNT service. People receiving maintenance dialysis paid for under Medicare's dialysis benefit are excluded from the MNT benefit, because nutrition care is part of dialysis services. Your dialysis unit's dietitian provides that care. People with kidney disease who are not on dialysis can qualify if their GFR is 15 to 59.
