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Medicare Cardiac Rehabilitation in Sioux Falls 2026: The 36-Session Benefit, What You Pay, and How to Protect Yourself from the 20% Gap

A cardiac event rewrites your healthcare calendar. Here is exactly what Medicare covers, what it leaves on your bill, and which Sioux Falls plan puts a ceiling on your exposure.

Big Sioux Benefits Data Desk

Published July 21, 2026 · 10 min read · Sourced from CMS.gov & CDC

A heart attack, bypass surgery, or angioplasty is only the beginning of recovery — Medicare's cardiac rehabilitation benefit is how you rebuild strength and reduce the risk of another event. Part B covers up to 36 medically supervised sessions in a structured program, and the coverage rules are more specific — and more protective — than most Sioux Falls beneficiaries realize.

Every figure below comes from public federal data: the CMS PY2026 plan landscape, CMS Hospital Compare star ratings, CDC PLACES 2023 county health data, and the CMS standardized Medigap coverage matrix. No invented numbers.

What Is Medicare Cardiac Rehabilitation?

Cardiac rehabilitation is a medically supervised outpatient program that combines monitored exercise, heart-health education, nutrition counseling, and psychological support after a qualifying cardiac event. It is not optional gym time. It is a structured clinical program with measurable outcomes — and it is covered by Medicare Part B as medically necessary care.

The program runs in two forms. Standard Phase II cardiac rehab is the most common and what most beneficiaries receive after a cardiac hospitalization. Intensive Cardiac Rehab (ICR) is an expanded version available through CMS-approved curricula (such as Ornish or Pritikin) that offers more frequent sessions and a more intensive behavioral-change component. Both are covered under the same Part B 80/20 cost-sharing structure.

CMS covers cardiac rehab because the clinical evidence is strong: participation is associated with reduced hospital readmission rates and lower cardiac mortality over the following years. For Sioux Falls' roughly 2,174 Medicare beneficiaries living with coronary heart disease, it is one of the highest-value preventive benefits in Part B — and one of the most underutilized, often because beneficiaries don't understand what Medicare covers and what gap remains.

Which Cardiac Events Qualify for Medicare Coverage?

Not every heart condition qualifies automatically. CMS's National Coverage Determination (NCD 20.10.1) and 42 CFR 410.49 define the seven covered diagnoses. Your cardiologist must certify medical necessity and establish a written plan of care before the first session:

Source: CMS National Coverage Determination 20.10.1 (Cardiac Rehabilitation Programs); 42 CFR 410.49. Coverage requires physician certification of medical necessity and a written plan of care at a Medicare-certified facility.

Two points worth emphasizing for Sioux Falls beneficiaries. First, stable angina qualifies even without a recent heart attack or procedure. If your cardiologist documents stable angina and orders a rehab plan of care, you may qualify without a prior hospitalization. Second, stable chronic heart failure (left ventricular ejection fraction of 35% or below, stable symptoms) was added to the NCD in 2014, significantly expanding eligibility for a population that historically had no cardiac rehab access under Medicare.

How Many Sessions Does Medicare Cover?

The session structure is the most practically important detail for someone entering a cardiac rehab program, and it differs between standard and intensive curricula:

Source: CMS National Coverage Determination 20.10.1, 42 CFR 410.49. Session counts apply per covered cardiac event; a separate qualifying event may generate a separate episode of coverage.

The 36-session standard is a maximum, not a guarantee — your cardiologist must establish medical necessity and an individualized plan of care. If clinical progress warrants an extension to 72 sessions, your physician must document continued medical necessity before those additional sessions begin. ICR programs offer more frequent contact but are only available at CMS-approved facilities using an approved curriculum; not every hospital outpatient rehab department qualifies as an ICR program.

What You Pay Under Original Medicare

Cardiac rehab follows the standard Part B cost-sharing framework: one annual deductible, then 20% of every Medicare-approved session amount with no annual ceiling. Here is what that looks like at different utilization levels (approved amounts per session are illustrative estimates — actual rates vary by setting and contract):

Source: CMS Medicare Part B cost-sharing (2025 published figures per CMS Fact Sheet). Approved amounts per session are illustrative at $150; actual rates vary by setting, geography, and provider contract. Verify with your provider's billing department.

This is the gap that surprises many Sioux Falls beneficiaries. Under Original Medicare alone, the 20% coinsurance on a 36-session course can run to several hundred dollars with no upper limit. For a beneficiary managing other Part B-covered conditions at the same time — a very common scenario given the county's 31.7% hypertension and 22.9% arthritis rates — the annual Part B deductible may already be met before rehab begins, which reduces out-of-pocket cost. A Medigap supplement or a Medicare Advantage PPO's annual MOOP converts the open-ended exposure into a predictable figure.

Why Cardiac Rehab Matters in Sioux Falls Specifically

Minnehaha County's chronic-condition profile creates a large local pool of potential cardiac rehab candidates and an even larger at-risk population. CDC PLACES 2023 data for Minnehaha County adults shows the cardiovascular burden directly:

Source: CDC PLACES: Local Data for Better Health, County 2023 (2023), Minnehaha County adults.

Coronary heart disease at 5.5% of Minnehaha County adults translates to roughly 2,174 of the county's 39,532 Medicare beneficiaries managing a condition that directly qualifies them for cardiac rehab following a new event. The 31.7% hypertension rate — roughly 12,532 local Medicare beneficiaries — signals a far larger pool at elevated cardiovascular risk who may become eligible following a future cardiac event. COPD at 5.6% carries frequent cardiac comorbidity, and the 10% diabetes rate is a well-established independent risk factor for coronary artery disease, making cardiac events more likely in this population over time.

Where Sioux Falls Beneficiaries Go for Cardiac Rehab: Sanford vs. Avera

Sioux Falls runs on two health systems, and both operate Medicare-certified cardiac rehabilitation programs. Your Medicare plan choice affects your in-network cost tier at each:

Source: CMS Hospital Compare — Overall Star Ratings.

Under Original Medicare, you can use any Medicare-certified cardiac rehab program at either health system — Sanford or Avera — at the standard 80/20 cost-sharing rate, with no prior referral to a specific system required. The Sioux Falls VA Medical Center (5 CMS stars) also serves eligible veterans, but VA cardiac rehab operates under a separate system with its own access and eligibility rules.

Under a Medicare Advantage PPO, network tiers matter. Sanford's Align plans (ChoicePlus at $0 premium, ChoiceElite at $66/month) are Sanford-backed — Sanford's cardiac rehab department is the preferred in-network setting. If your cardiologist practices at Avera McKennan and refers you to Avera's cardiac rehab program, confirm that the specific Avera rehab facility is in-network at the preferred cost-sharing tier in your Align plan before you commit. Getting that wrong partway through a 36-session course can affect your cost-sharing mid-episode, which is a disruption no one needs during cardiac recovery.

How Medigap Plan G and Plan N Handle the 20% Coinsurance

A Medigap supplement that covers Part B coinsurance converts open-ended 20% exposure into a fixed, predictable annual deductible. Here is the relevant portion of the CMS standardized coverage matrix for the plans most relevant to cardiac rehab cost-sharing:

Source: CMS — Choosing a Medigap Policy (Publication 02110), standardized per 42 CFR §403.205.

Plan G is the most comprehensive option for beneficiaries who enrolled in Medicare Part B on or after January 1, 2020. After the $283 annual deductible, Plan G covers 100% of the 20% coinsurance on every covered Part B service, including every cardiac rehab session. A beneficiary completing a full 36-session standard course owes exactly the annual deductible for that entire episode — no matter what the approved amount per session turns out to be.

Plan N also covers the 20% coinsurance but charges a $20 copay per office visit. For a 36-session cardiac rehab course, that adds up to $720 in copays above the deductible — typically well below the uncapped 20% at higher approved-amount levels, but a real recurring cost to plan for. Plan N does not cover excess charges (the 15% above Medicare's approved amount that non-participating providers can add). Confirm your Sanford or Avera cardiac rehab facility participates with Medicare before you begin.

Timing is critical for Medigap: your guaranteed-issue enrollment window is when you first sign up for Medicare Part B (generally at 65). After that window, South Dakota carriers can apply medical underwriting — and a history of coronary heart disease, bypass surgery, or heart failure can make Medigap more expensive or harder to obtain. If you are approaching 65 and have an existing cardiac history, securing Medigap coverage during the guaranteed-issue window is particularly valuable.

How the 5 Local Medicare Advantage PPOs Compare

All five Sioux Falls Medicare Advantage PPOs cover cardiac rehabilitation — it is a required Medicare Part B benefit — but they replace the uncapped 20% with their own cost-sharing structure plus an annual maximum out-of-pocket. Here is the full 2026 standard PPO roster in Minnehaha County:

Source: CMS Medicare Advantage / Part D Landscape (PY2026) & CMS Medicare Advantage & Part D Star Ratings (2026), Minnehaha County, 2026.

For a beneficiary in active cardiac rehabilitation, the MOOP protection of an Advantage PPO can meaningfully limit what a high-utilization year costs. The key trade-off is prior authorization: most PPOs require plan approval before your rehab episode begins, and approval may come in blocks (for example, 10 or 12 sessions at a time), requiring your rehab provider to request a renewal before the next block or face a coverage gap mid-episode.

Two plans carry a $0 monthly premium: Aetna Medicare Signature and Sanford's Align ChoicePlus. Align ChoicePlus is Sanford-backed — Sanford's cardiac rehab program is the preferred in-network setting. If your cardiologist is at Avera and refers you to Avera's cardiac rehab, verify that Avera rehab locations are covered at the in-network tier in your specific Align Evidence of Coverage before your first appointment. All five standard PPOs carry a 3.5 CMS star rating in 2026 — no local standard plan holds a 4-star or higher rating, so the year-round 5-star Special Enrollment Period is not available in Minnehaha County this year.

Cardiac Medications and the 2026 Part D $2,100 Cap

Most cardiac medications are generic and cost very little under a standard formulary. But patients prescribed brand-name antiplatelet agents after an acute coronary syndrome often face higher Part D cost-sharing for 12 months or more. That is where the 2026 Part D $2,100 out-of-pocket ceiling becomes directly relevant:

Tier classifications and costs are illustrative; formulary placement and cost-sharing vary by plan and year. Always verify your specific medications against each plan's 2026 formulary at medicare.gov/plan-compare before enrolling. Source context: CMS Part D formulary tier framework.

The 2026 Part D cap provides real protection for patients on ticagrelor (Brilinta) or other brand-tier cardiac drugs. At $50 to $150 per month in Part D cost-sharing, a patient can reach the $2,100 ceiling well before the end of the year — at which point the plan covers 100% of covered drug costs for the remainder of the calendar year. Most patients on entirely generic cardiac regimens — metoprolol, lisinopril, atorvastatin, generic clopidogrel — will spend far below the cap and benefit mainly from its backstop protection rather than its active ceiling function.

When comparing the five local PPOs, the formulary tier of your specific antiplatelet or specialty cardiac drug deserves as much weight as the plan's monthly premium. A plan that places ticagrelor on a lower cost-sharing tier can save significantly more than a $50 or $80 monthly premium difference.

What to Watch in 2026

1. Confirm your qualifying event before the first session — cardiac rehab is not automatically triggered by a hospitalization. Your cardiologist must certify the diagnosis, order the program, and establish a written plan of care. Verify that certification is complete and on file with the rehab program before your first scheduled session.
2. Verify the facility is Medicare-certified — both Sanford and Avera operate Medicare-certified cardiac rehab programs in Sioux Falls, but confirm the specific location you will use is certified and that the program's staff accept Medicare assignment to avoid excess-charge risk.
3. Know your Advantage plan's prior-authorization renewal cycle — if you are in a Medicare Advantage PPO, ask the rehab coordinator specifically how many sessions each authorization block covers and what documentation is required to renew before the block runs out. A lapse mid-episode can delay your recovery schedule.
4. Track your Part B deductible year to date — the $283 deductible applies across all Part B services in a calendar year. If you were hospitalized, had imaging, or received outpatient procedures earlier in the year, the deductible may already be fully met, reducing your net cardiac rehab cost from the first session.
5. Review your Part D formulary before AEP (October 15) — if you are starting or continuing an antiplatelet agent, check whether your current plan's 2027 formulary (published in your Annual Notice of Change) moves that drug to a higher or lower tier. A tier change on a drug you take for 12 months post-event is worth switching plans during AEP to avoid.

How we know this: Big Sioux Benefits runs every article through a data desk that cross-references the CMS plan landscape, county enrollment, 2026 star ratings, hospital quality data, and CDC health data — built by Strategic AI Architects. Coverage rules cited here (NCD 20.10.1, 42 CFR 410.49) are federal statute; verify current coverage standards and your personal eligibility with a licensed agent or Medicare.gov. Every statistic comes from a public federal dataset. This is education, not advice. We take no payment from any carrier to feature a plan.