The cash lane inside an in-network practice: which services qualify

Which services can you charge cash for while in network?

Three categories survive contact with a participation agreement: a service the plan excludes from its benefit altogether, a service for a patient who is not that plan's member, and a single visit an insured patient elects as self-pay before it happens, where the agreement permits it. A covered service for a contracted patient is not one of them. It goes to the plan at the contracted rate.

The closed cell is the one clinicians ask about, and it is closed by contract. For Medicare Advantage the prohibition is written into federal rule, which requires the plan's contracts with its network providers to bar the provider from holding an enrollee liable for amounts beyond the plan's own cost sharing on a covered service 1Ref 1Centers for Medicare & Medicaid Services (HHS) (2025).42 CFR § 422.504 — Contract provisions.Supports the point that for Medicare Advantage plans the bar on billing a network enrollee beyond the plan's own cost sharing on a covered service is a federally required contract term, and is the model most in-network hold-harmless clauses follow by private contract.. In most agreements the clause carrying that duty is named hold harmless, and most commercial contracts carry their own version of it.

But the patient in front of you is often not in that cell at all.

A patient with no coverage from that plan, a patient whose plan excludes the service outright, a patient who wants an extended visit the plan does not recognize as a benefit: each sits somewhere else. Run three questions in order. Does the plan cover this service at all? Is this patient a member of the plan you contracted with? And does the agreement you signed say anything about what you may charge outside it?

Non-covered services are the durable cash line

A service the plan never covered is the cash line a participation agreement has the least to say about, because there is no covered benefit for the contract to price or to protect. Medicare's own exclusions are the clearest published example. Cosmetic surgery and related services are excluded except as required for the prompt repair of accidental injury or the improvement of the functioning of a malformed body member, and hearing aids, along with the examinations to prescribe, fit or change them, are excluded outright 2Ref 2Centers for Medicare & Medicaid Services (HHS) (2025).42 CFR § 411.15 — Particular services excluded from coverage.Supports the worked example of services sitting outside a payer's covered benefit altogether: cosmetic surgery except as required for the prompt repair of accidental injury or the improvement of the functioning of a malformed body member, and hearing aids with the examinations to prescribe, fit or change them..

Medicare's list is a worked example and never a universal one. Commercial plans write their own exclusions, and the documents that govern your cash line are the member's certificate of coverage read against your contract's definition of covered services. Two plans in the same market can put the same service on opposite sides of that line, and the same plan can move it at renewal.

But some services run hard the other way. A non-grandfathered plan or issuer must cover an item or service rated A or B by the United States Preventive Services Task Force with no copayment, coinsurance or deductible, and that zero-cost-sharing requirement stops applying once a non-participating provider delivers it 3Ref 3U.S. Department of Health and Human Services (2010).Coverage of preventive health services.Supports the counter-example that a non-grandfathered plan must cover a USPSTF A or B rated item or service with no copayment, coinsurance or deductible, and that the zero-cost-sharing requirement stops applying once a non-participating provider delivers it.. For a patient on your own panel, an A or B preventive service is not available as a cash line. The plan owes it at zero.

What your participation agreement decides

Everything the regulations leave open, your own contract closes. For commercial plans no public statute answers whether you may sell a cash add-on alongside a covered visit; the permission or the prohibition lives in the participating-provider agreement you signed, and it varies by payer and by contract year. Read four clauses before you price anything: covered services, hold harmless, any exclusivity or most-favored-nation language, and the amendment provision.

The covered-services definition tells you which of your services the contract reaches, which is the same question the exclusion list answers from the other side. The hold-harmless clause tells you what you may collect from a member on those services, and for Medicare Advantage it sits there because federal rule put it there 1Ref 1Centers for Medicare & Medicaid Services (HHS) (2025).42 CFR § 422.504 — Contract provisions.Supports the point that for Medicare Advantage plans the bar on billing a network enrollee beyond the plan's own cost sharing on a covered service is a federally required contract term, and is the model most in-network hold-harmless clauses follow by private contract.. Some agreements go further and restrict what you may charge for services the contract does not cover, which is a clause worth looking for by name.

Silence in the contract is a question for the payer's provider relations desk. Ask in writing, name the clause, and keep the answer with the agreement.

Medicare and Medicaid patients narrow the lane

Two federal programs remove the choice. A Medicare beneficiary triggers a mandatory claim: the provider must submit a claim for every covered service furnished, regardless of any private fee arrangement, under a civil monetary penalty of up to $2,000 per violation, and the patient may not be charged for preparing or filing it 4Ref 4Noridian Healthcare Solutions (CMS Medicare Administrative Contractor, Jurisdiction E Part B) (2025).Mandatory Claim Submission - JE Part B.Supports the mandatory claim submission duty for every covered service furnished to a Medicare beneficiary regardless of any private fee arrangement, the up-to-$2,000 civil monetary penalty per violation, and the bar on charging the patient to prepare or file the claim.. A Medicaid-participating provider must accept the agency's payment plus any allowed cost sharing as payment in full for a covered service 5Ref 5Centers for Medicare & Medicaid Services (2013).§ 447.15 Acceptance of State payment as payment in full..Supports the rule that a Medicaid-participating provider must accept the agency's payment plus any allowed cost sharing as payment in full for a covered service, and the limit of that rule to services the provider is enrolled and billing for..

The claim duty is the part that catches retainer models. It attaches to the covered service furnished to a beneficiary, so a membership fee, a concierge tier or a cash rate the patient gladly agreed to does not stand in for the claim 4Ref 4Noridian Healthcare Solutions (CMS Medicare Administrative Contractor, Jurisdiction E Part B) (2025).Mandatory Claim Submission - JE Part B.Supports the mandatory claim submission duty for every covered service furnished to a Medicare beneficiary regardless of any private fee arrangement, the up-to-$2,000 civil monetary penalty per violation, and the bar on charging the patient to prepare or file the claim.. Billing the patient for the work of preparing that claim is separately prohibited.

Medicaid earns one more line. The payment-in-full rule binds while you are enrolled and billing the program for that service 5Ref 5Centers for Medicare & Medicaid Services (2013).§ 447.15 Acceptance of State payment as payment in full..Supports the rule that a Medicaid-participating provider must accept the agency's payment plus any allowed cost sharing as payment in full for a covered service, and the limit of that rule to services the provider is enrolled and billing for.. Whether a provider outside the program may privately charge a Medicaid-eligible patient for the same service is state law, and the state agency is the place to ask it.

Electing self-pay for one visit with an insured patient

An insured patient can be treated as self-pay for a single visit, and federal law already contemplates the case: under the No Surprises Act rules a patient who does have benefits for an item or service counts as a self-pay individual for that one item or service the moment the provider does not seek to have a claim submitted for it 6Ref 6U.S. Departments of Health and Human Services, Labor, and the Treasury (2025).45 CFR § 149.610 — Requirements for provision of good faith estimates of expected charges for uninsured (or self-pay) individuals.Supports the definition of a self-pay individual as a patient with benefits for whom the provider does not seek to have a claim submitted, plus the good faith estimate delivery deadlines and the minimum required contents.. The election creates paperwork rather than permission. What your plan contract allows is a separate question, and this rule does not reach it.

Once the election is made a written good faith estimate is due, and the clock runs from scheduling: within 1 business day when the service is booked at least 3 business days out, and within 3 business days when it is booked at least 10 business days out or when the patient asks for an estimate directly 6Ref 6U.S. Departments of Health and Human Services, Labor, and the Treasury (2025).45 CFR § 149.610 — Requirements for provision of good faith estimates of expected charges for uninsured (or self-pay) individuals.Supports the definition of a self-pay individual as a patient with benefits for whom the provider does not seek to have a claim submitted, plus the good faith estimate delivery deadlines and the minimum required contents..

The estimate itemizes by provider and facility and carries, at a minimum, the patient's name and date of birth and a plain-language description of the primary item or service, with its scheduled date where there is one 6Ref 6U.S. Departments of Health and Human Services, Labor, and the Treasury (2025).45 CFR § 149.610 — Requirements for provision of good faith estimates of expected charges for uninsured (or self-pay) individuals.Supports the definition of a self-pay individual as a patient with benefits for whom the provider does not seek to have a claim submitted, plus the good faith estimate delivery deadlines and the minimum required contents.. Build it once as a template. The required fields do not change between patients, and the visit that gets booked on a Friday afternoon is the one that will otherwise miss the deadline.

The estimate has teeth: a self-pay patient's bill has to come in at least $400 more than the total expected charges listed on the estimate before it counts as substantially in excess and opens the federal patient-provider dispute process 7Ref 7U.S. Departments of Health and Human Services, Labor, and the Treasury (2025).45 CFR § 149.620 — Requirements for the patient-provider dispute resolution process.Supports the single numeric guardrail: a self-pay bill must exceed the good faith estimate by at least $400 before it counts as substantially in excess and opens the federal patient-provider dispute process..

The election covers one service for one patient. It is no route off the panel, and it changes nothing about the services you are still billing to the plan.

Pricing the line and writing it down

Set the price against what delivering the service costs you, then put the number in front of the patient in writing before the visit. No public schedule prices an extended wellness visit, a coaching package or a group program, so no lookup produces the figure. The costs of standing the line up, the room, the software, the extra hour of your time, belong in the startup budget for it.

A cash line also removes work. No eligibility check, no claim, no remittance to post, no appeal when the claim comes back short: the subtraction list is real money, and it is why a cash rate can sit under the contracted rate and still clear more per hour of your time.

Discipline changes the arithmetic underneath that. Pricing cash-based physical therapy is a different exercise from pricing a dermatology cosmetic line, because the covered-benefit boundary sits in a different place and the visit volumes behind each hour are different.

Start with the documents you already hold. Pull each participation agreement, find the covered-services definition and the hold-harmless clause, and list the services you want to sell for cash against the plan's published exclusions and the member's certificate of coverage. Where the language is genuinely ambiguous, that is the hour to buy from health care counsel. Take the clause number into that conversation.