In-center hemodialysis costs $90,000–$120,000 per year without insurance. For the 800,000+ Americans with End-Stage Renal Disease (ESRD), Medicare provides a unique lifeline: coverage for dialysis regardless of age — one of the only Medicare provisions based on medical condition rather than age. Yet BillKarma data shows that dialysis billing errors affect 24% of ESRD claims, most often from incorrect session counts or EPO dosing errors. Understanding what Medicare covers, what you still owe, and how to protect your financial situation is essential for every dialysis patient and caregiver.

1. Dialysis cost overview

Dialysis is one of the most expensive ongoing medical treatments in the United States. Here is what the costs look like before and after Medicare:

Treatment TypeAnnual Cost (No Insurance)Medicare PaysMedicare Patient PaysWith Medigap
In-center hemodialysis (3x/week)$90,000–$120,000~80% of composite rate (~$35,000/year)20% coinsurance (no OOP max)Near $0
Home hemodialysis$70,000–$100,000~80% of composite rate20% coinsuranceNear $0
Peritoneal dialysis (CAPD/CCPD)$60,000–$80,000~80% of composite rate20% coinsuranceNear $0
Medicare Part B covers dialysis under the ESRD composite rate. The composite rate bundles the dialysis session, most supplies, labs, and certain medications (EPO, iron, Vitamin D) into a single per-treatment payment to the dialysis facility. Without supplemental coverage, you owe 20% of this rate with no annual out-of-pocket maximum — which can still amount to $7,000–$10,000/year. A Medigap plan eliminates most of this exposure.

2. Medicare ESRD benefit: how it works

The Medicare ESRD benefit is unique in American healthcare: it covers anyone with kidney failure requiring dialysis or transplant regardless of age. Here is the enrollment process:

  1. ESRD diagnosis. You are diagnosed with End-Stage Renal Disease and your nephrologist determines you need dialysis or a kidney transplant.
  2. The three-month waiting period begins. Medicare ESRD coverage does not start immediately. It begins on the first day of the fourth month of dialysis treatment (or immediately if you receive a kidney transplant without a dialysis waiting period).
  3. Enroll in Medicare. Apply through the Social Security Administration. Your dialysis center’s social worker can assist with enrollment paperwork — this is part of their standard services and is free.
  4. Medicare becomes primary. Starting in the fourth month, Medicare Part B is your primary payer for dialysis. Your employer insurance (if any) becomes secondary.
  5. Consider a Medigap plan. Because Medicare ESRD has no out-of-pocket maximum, Medigap (supplemental insurance) is highly valuable for dialysis patients. Medigap Plan G or Plan N will cover most of the 20% coinsurance.

Exception: employer group health plan coordination. If you have employer-sponsored insurance at the time of ESRD diagnosis, Medicare law requires your employer plan to be the primary payer for a coordination period of 30 months (your employer plan pays first, Medicare pays second). After 30 months, Medicare becomes primary. This is significant: commercial insurance typically pays substantially higher rates than Medicare, meaning your dialysis center receives higher reimbursement and you may have better OOP protection through your employer plan during this period. Do not drop commercial coverage prematurely.

3. What Medicare covers and what it does not

Medicare’s ESRD composite rate bundles most routine dialysis costs into a single per-treatment payment:

Covered by Medicare ESRD Composite RateNOT Covered by Medicare
Hemodialysis sessions (3x/week standard)Transportation to/from dialysis center
Peritoneal dialysis supplies and equipment (home)Lost wages during dialysis sessions
Dialysis-related laboratory testsHome modifications for home dialysis setup
EPO (erythropoietin) for anemiaDental care
IV iron supplementationVision care (except diabetic retinal exams)
Activated Vitamin D (calcitriol)Hearing aids
Phosphate binders (oral, as of 2025)Nutritional supplements not prescribed for dialysis
Vascular access procedures (fistula, graft, catheter)Immunosuppressants after month 37 post-transplant (major gap)
Kidney transplantExperimental treatments and clinical trial costs

Transportation is a critical uncovered cost. In-center hemodialysis patients attend 3 sessions per week, approximately 156 sessions per year. Transportation alone can cost $3,000–$8,000/year. Some Medicaid programs cover non-emergency medical transportation (NEMT) for dialysis. Check with your state Medicaid program if you qualify.

4. Commercial insurance during the waiting period

The three-month Medicare waiting period is one of the most financially vulnerable periods for dialysis patients. Here is how to protect yourself:

  1. Do not drop commercial insurance. If you have employer-sponsored insurance, keep it through the 30-month coordination period. Commercial insurance pays higher rates than Medicare, and your cost-sharing may actually be lower through a well-designed employer plan.
  2. Apply for Medicaid immediately if you have no commercial insurance and are low-income. Medicaid can cover the waiting period and, in states with full Medicaid expansion, is available to adults with incomes up to 138% of the federal poverty level.
  3. Ask your dialysis center about charity care. DaVita, Fresenius, and other large dialysis organizations have financial assistance programs for uninsured or underinsured patients during the waiting period and beyond.
  4. Contact the American Kidney Fund (AKF). The AKF provides health insurance premium assistance grants for dialysis patients who need help paying insurance premiums to maintain commercial coverage.
  5. Work with your dialysis center social worker. Every Medicare-certified dialysis center must have a social worker available to help patients navigate insurance, financial assistance, and government programs. This service is free and is part of your dialysis care.

5. Home dialysis: hemodialysis vs. peritoneal dialysis

Medicare covers home dialysis at the same composite rate as in-center dialysis. Home dialysis offers significant quality-of-life and sometimes financial advantages:

In-Center HemodialysisHome HemodialysisPeritoneal Dialysis (PD)
LocationDialysis centerHomeHome
Frequency3x/week, 3–5 hours3–6x/week (more frequent, shorter sessions)Daily (CAPD) or nightly (CCPD/APD)
Training requiredNone (staff performs)4–8 weeks with a care partner1–2 weeks
Medicare costSame composite rateSame composite rateSame composite rate
Transportation cost156 trips/yearNone (home)None (home)
Typical patientAnyone; easier to startMotivated patients with a care partnerResidual kidney function; less cardiovascular stress

Home dialysis eliminates transportation costs and often allows patients to maintain employment more easily. Ask your nephrologist whether home hemodialysis or peritoneal dialysis is medically appropriate for your situation. Not every patient is a candidate, but many who are candidates are never offered the option.

6. Choosing a dialysis center

Two companies — DaVita and Fresenius Medical Care — control approximately 70% of dialysis facilities in the United States. Hospital-based dialysis centers make up most of the remainder.

Quality varies meaningfully between facilities. Medicare’s Dialysis Facility Compare tool (at medicare.gov/care-compare) rates dialysis facilities on clinical measures including:

  • Adequate dialysis (Kt/V ≥ 1.2 for hemodialysis)
  • Vascular access: fistula use rate and catheter use rate
  • Hypercalcemia rates
  • Hospital readmission rates
  • Patient survival rate

When comparing facilities, also consider: distance from home (transportation cost), whether the facility supports home dialysis training, the nephrologist group affiliated with the facility, and whether the facility’s hours accommodate your schedule.

7. Kidney transplant: the best long-term option

A kidney transplant is the best long-term treatment for ESRD for eligible patients. Outcomes are better, quality of life is significantly higher, and long-term costs are lower than dialysis. Medicare covers the transplant and the critical post-transplant period:

  • Transplant surgery: Covered by Medicare (hospital and surgeon fees).
  • Immunosuppressant medications: Covered by Medicare Part B for 36 months post-transplant. After month 37, coverage ends unless you qualify for Medicare through age (65+) or disability.
  • The month-37 gap: Immunosuppressants (tacrolimus, mycophenolate, prednisone) cost $500–$2,500/month without coverage. Stopping them causes rejection and loss of the transplanted kidney. This is a critical gap. The Immuno Advocacy group (kidney transplant recipients) has been lobbying for permanent Medicare coverage of immunosuppressants. Check current law at the time of your transplant.

Getting on the transplant waiting list: The national kidney transplant waiting list is managed by UNOS (United Network for Organ Sharing). The average wait for a deceased donor kidney is 3–5 years, varying significantly by blood type, region, and other factors. Living donor transplants (from a friend or family member) can bypass the waiting list entirely. Contact the National Kidney Foundation (kidney.org) for a list of transplant centers and information about the evaluation process.

8. Common billing errors and how to dispute them

Dialysis billing is highly complex — the composite rate bundles dozens of individual services, and errors in session counts, medication dosing records, and lab billing are common. BillKarma data shows dialysis billing errors affect 24% of ESRD claims. The most frequent patterns:

  1. Incorrect session count. If the dialysis facility bills for more sessions than were actually performed in a month, the Medicare composite rate payment is inflated. Your 20% coinsurance is calculated on the total — extra sessions mean extra cost-sharing for you. Review your Medicare Summary Notice (MSN) monthly and compare session counts to your actual attendance records.
  2. EPO (erythropoietin) dosing errors. EPO is covered within the composite rate but separately tracked. If the dosing recorded in the billing system exceeds what you actually received, you may be billed for medications you did not get. Request your medication administration record from the facility.
  3. Duplicate billing for bundled services. Services that are part of the composite rate (labs, certain medications) should not be billed separately. If you see separate line items on your MSN for services that should be bundled, that is a billing error.
  4. Billing under wrong payer during coordination period. If your employer plan is primary for the 30-month coordination period and the dialysis facility bills Medicare first, claims may be paid at the wrong rate. Ensure your dialysis center has your current insurance information and knows which payer is primary.

To dispute a dialysis billing error:

  1. Review your Medicare Summary Notice (MSN) monthly. MSNs are available at MyMedicare.gov or mailed quarterly.
  2. Compare session counts to your own attendance records. Request a copy of your medication administration record from the facility if you suspect EPO or IV iron dosing errors.
  3. Contact the dialysis facility billing department first. Most errors are resolved at this level.
  4. If unresolved, file a Medicare appeal. You have 120 days from the MSN date to file a redetermination request.
  5. Use BillKarma to review your dialysis billing for errors and generate a dispute letter.
BillKarma finding: Dialysis billing errors affect 24% of ESRD claims, primarily from incorrect session counts and EPO dosing discrepancies. Because you pay 20% coinsurance on all composite rate charges, even small overbilling errors result in meaningful overcharges to you. Review your Medicare Summary Notice every month. Upload your dialysis bills to BillKarma for a free audit.

Frequently asked questions

Does Medicare cover dialysis for everyone, not just people over 65?

Yes. The Medicare ESRD benefit covers anyone with kidney failure requiring dialysis regardless of age. It is one of the only Medicare provisions triggered by a medical condition rather than age.

When does Medicare ESRD coverage start?

Medicare ESRD coverage starts on the first day of the fourth month of dialysis treatment. During the first three months, your commercial insurance (or Medicaid) is primary. Do not drop commercial coverage during this period.

What is the difference between hemodialysis and peritoneal dialysis?

Hemodialysis filters blood through a machine, typically at a center three times per week. Peritoneal dialysis uses the abdomen’s lining to filter blood and can be done at home daily. Both are covered by Medicare at the same composite rate.

Is dialysis covered by Medicaid?

Yes. Medicaid covers dialysis for low-income patients. For patients eligible for both Medicare and Medicaid (dual eligible), Medicaid typically covers the 20% Medicare coinsurance, making dialysis essentially free.

What happens to Medicare coverage if I get a kidney transplant?

Medicare covers the transplant and 36 months of immunosuppressant medications post-transplant. After month 37, coverage of immunosuppressants ends unless you qualify for Medicare through age or disability. This is a critical coverage gap — plan ahead and consult with your transplant center social worker.

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