Money Foundations · 13 min read
How coverage shapes a patient's choices
Deductibles, coinsurance, Medicare, Medicaid, and the month of the year
Same plan, same test, different price
Two patients with identical insurance get the same MRI. One pays $1,200, the other pays $240. Nothing differs except the calendar and what each has already spent this year. Patients feel this before they understand it, and it drives decisions you will see every week: the January refill that does not get picked up, the October rush to schedule the colonoscopy, the follow-up imaging pushed to 'after the new year.' Understanding the mechanics lets you interpret those choices and plan around them with the patient instead of being surprised by them.
Out-of-pocket maximum
The most a patient pays for covered, in-network services in a plan year, counting deductible, copays, and coinsurance but not premiums. After it is reached, the plan pays 100% of covered in-network care for the rest of the year.
The deductible is what the patient pays for covered services before the plan starts sharing costs (many preventive services are exempt). A copay is a fixed dollar amount per service, such as $30 per visit. Coinsurance is a percentage of the allowed amount, such as 20%, usually after the deductible. The out-of-pocket maximum caps the total. For 2026 Marketplace plans the cap is $10,600 for an individual and $21,200 for a family. A high-deductible health plan (HDHP) that qualifies for a must have a 2026 deductible of at least $1,700 self-only or $3,400 family and an out-of-pocket maximum no higher than $8,500 or $17,000. The 2026 HSA contribution limits are $4,400 self-only and $8,750 family. Under Public Law 119-21, starting in 2026, bronze and catastrophic plans available through an Exchange are treated as HSA-compatible, and enrollment in a direct primary care arrangement with fees up to $150 a month ($300 for more than one person) does not by itself end HSA eligibility.
Why it matters: An HDHP patient with an unmet deductible pays the full allowed amount for most non-preventive care, so a $180 office visit or a $1,200 MRI is a real decision. An HSA balance changes that decision; an empty one does not.
What patients feel at the point of care, by coverage type
These are the 2026 headline numbers. Individual plans vary, Medicare Advantage plans set their own cost sharing within federal limits, and Medicaid cost sharing is set by each state within federal rules.
| Coverage | Key 2026 numbers | What the patient feels |
|---|---|---|
| Employer HDHP with HSA | Deductible at least $1,700 / $3,400; out-of-pocket max no more than $8,500 / $17,000; HSA limit $4,400 / $8,750 | Full allowed amount for most care until the deductible is met |
| Marketplace plan | Out-of-pocket max no more than $10,600 / $21,200 | Varies by metal level; bronze plans carry high deductibles and are HSA-compatible from 2026 |
| Traditional Medicare Part B | Standard premium $202.90 per month; deductible $283; then generally 20% coinsurance | No annual out-of-pocket cap in traditional Medicare without supplemental coverage |
| Medicare Part D (standard benefit) | Deductible $615; out-of-pocket threshold $2,100 | No cost sharing for covered Part D drugs once $2,100 is reached |
| Medicaid | Expansion adults with income below 133% of the federal poverty level (effectively 138%); for a household of one, 1.38 × $15,960 = $22,024.80 | Minimal cost sharing; expansion adults ages 19–64 face a community engagement requirement (80 hours a month of qualifying activity) that states must implement by January 1, 2027 |
The MRI in February versus November
A 52-year-old patient has a plan with a $3,000 deductible, 20% coinsurance, and a $7,000 out-of-pocket maximum. A knee MRI has an in-network allowed amount of $1,200. In Case A she needs it in February with no claims yet this year. In Case B she needs it in November after a September ED visit and follow-up that totaled $3,400 in allowed charges.
Bottom line: Timing changes the bill for the next service, not the year's total, when the patient will cross the deductible anyway. Waiting saves real money only when the delayed service lands in a year where she would otherwise not reach the deductible, and that has to be weighed against the clinical cost of waiting, which is your call to explain.
8.2% of U.S. adults ages 18–64 who took prescription medication in the past year, about 9.2 million people, did not take it as prescribed to save money in 2021; among uninsured adults the figure was 22.9%.
The survey counted three behaviors: skipping doses, taking less medication, and delaying a fill to save money. Rates were 6.5% among privately insured adults and fell as income rose. A patient whose A1c is not moving may be a patient whose metformin is fine and whose GLP-1 receptor agonist was never filled. A single direct question ('In the past year, have you skipped or stretched any medicine because of cost?') converts an apparent treatment failure into a solvable problem.
Source: Mykyta L, Cohen RA. Characteristics of adults aged 18–64 who did not take medication as prescribed to reduce costs: United States, 2021. NCHS Data Brief No. 470. Hyattsville, MD: National Center for Health Statistics; 2023. https://dx.doi.org/10.15620/cdc:127680
Ordering before prior authorization is settled
Prior authorization is a plan's requirement to approve a service or drug before it will pay. When a test is done without a required approval, the claim can be denied and the patient may be left with the bill or a delayed diagnosis. Starting January 1, 2026, under the CMS Interoperability and Prior Authorization final rule (CMS-0057-F), Medicare Advantage plans, Medicaid and CHIP fee-for-service programs, and Medicaid and CHIP managed care plans must decide standard requests within 7 calendar days and expedited requests within 72 hours, and must give a specific reason for a denial. These timeframes do not apply to drug prior authorizations, and commercial employer plans follow their own rules and state law.
How to avoid it: Before scheduling advanced imaging or a specialty drug, confirm with your clinic's referral or authorization staff whether the patient's plan requires approval. Mark urgent requests as expedited when the clinical situation justifies it, document the reasoning the plan's criteria ask for, and tell the patient the expected timeline so a delay is not mistaken for a decision.
Check your understanding
One question on deductible math.
A patient's plan has a $2,500 deductible and 20% coinsurance. She has $1,900 applied to her deductible so far this year and is far from her out-of-pocket maximum. An in-network CT has an allowed amount of $1,000. What does she pay?
She has $600 of deductible left, which she pays in full. The remaining $400 is subject to 20% coinsurance, or $80. Total: $600 + $80 = $680. $200 applies coinsurance to the whole bill, $600 stops at the deductible, and $1,000 ignores that the deductible is nearly met.
What to carry into clinic
- Deductible, copay, coinsurance, and out-of-pocket maximum together set the price of the next service; the 2026 Marketplace cap is $10,600 individual / $21,200 family.
- 2026 HDHP thresholds: deductible at least $1,700 / $3,400, out-of-pocket max no more than $8,500 / $17,000; HSA limits $4,400 / $8,750; Exchange bronze and catastrophic plans are HSA-compatible from 2026.
- Medicare Part B has a $283 deductible and 20% coinsurance with no cap; Part D caps covered drug costs at $2,100 for 2026.
- Timing shifts the cost of one service, not the annual total, when the patient will meet the deductible anyway.
- About 1 in 12 adults on prescriptions skipped, stretched, or delayed medication for cost in 2021; ask directly.
Do this next: Add one cost question to your visit routine this week, such as asking whether any medicine has been skipped or stretched because of cost, and note how often the answer changes your plan.
Residency curriculum · lesson 31 of 38
Next: Practice Ownership: The Business of Medicine.
Read a practice P&L, price a buy-in, and know exactly when to hand the pen to your CPA A free account keeps your place, records completion for you alone, and opens the interactive version with the calculators. Your program sees aggregate completion above five residents, and your own status only if you turn that on.
Create a free account to continue →Sources (11)Show →
- HealthCare.gov glossary, Out-of-pocket maximum/limit (2026 figures) (accessed 2026-10-12)
- IRS, Rev. Proc. 2025-19 (2026 HSA limits and HDHP thresholds) (accessed 2026-10-12)
- IRS, Notice 2026-5 (HSA changes under Public Law 119-21) (accessed 2026-10-12)
- IRS news release, Treasury and IRS guidance on new HSA tax benefits under the One, Big, Beautiful Bill (accessed 2026-10-12)
- CMS, 2026 Medicare Parts A & B Premiums and Deductibles (accessed 2026-10-12)
- CMS, Final CY 2026 Part D Redesign Program Instructions (accessed 2026-10-12)
- HealthCare.gov, Medicaid expansion and you (accessed 2026-10-12)
- CMS, Medicaid Community Engagement Requirement for Certain Individuals Interim Final Rule (CMS-2454-IFC) (accessed 2026-10-12)
- Federal Register, Medicaid Program; Community Engagement Requirement for Certain Individuals (June 3, 2026) (accessed 2026-10-12)
- NCHS Data Brief No. 470 (June 2023) (accessed 2026-10-12)
- CMS, Interoperability and Prior Authorization Final Rule (CMS-0057-F) fact sheet (accessed 2026-10-12)
Keep reading
Cost awareness in the exam room
List price, allowed amount, out-of-pocket, and how to talk about all three
How care gets paid for
Fee-for-service, capitation, shared savings, and what each one rewards
The HSA: A Stealth Retirement Account
The only account in the tax code where money is never taxed — going in, growing, or coming out. Used as a debit card it does one job; invested, it does three.