Good faith estimate

What a Good Faith Estimate Is

A good faith estimate is a document given to uninsured or self-pay patients that lists the reasonably expected charges for a planned service or series of services. Federal law under the No Surprises Act requires most providers and facilities to give a GFE for scheduled non-emergency care when a patient asks or when a service is scheduled.

The estimate includes expected CPT/HCPCS codes, facility and professional charges, and any ancillary items that are reasonably expected at the time. For behavioral health, that usually means visits or days at a given level of care, such as weekly therapy sessions, IOP days, or residential per-diem rates, plus any standard add-ons like labs or UA screens if the program typically bills them.

Why a Good Faith Estimate Matters Operationally

A GFE is not just a courtesy quote. For uninsured and self-pay patients, it creates a legal expectation. If the final billed charges are substantially higher than the estimate, the patient may have a right to dispute the bill through the federal patient-provider dispute resolution process.

Operationally, that means:

• Front desk or intake must capture the right service plan before generating the estimate.
• Billing must keep charge structures and fee schedules current so the estimate is defensible.
• Clinical and utilization teams must flag material changes in the expected plan of care so an updated estimate can be offered.

If your estimate is way off and you still bill the full amount, you are not only inviting disputes and refunds. You also increase audit and compliance risk and create collections problems, because a patient who feels misled is far less likely to pay.

How a Good Faith Estimate Is Used and Read

Front-office or financial-counselor staff typically generate the GFE during scheduling or intake for uninsured or self-pay patients. The document must be in writing, use clear language, and list key details: patient information, service description, diagnosis if known, billing codes, estimated charges per service, and total estimated charges over the defined time period.

Billing leaders should read a GFE like a mini-projected treatment plan tied to your charge description master or fee schedule. Helpful questions:

• Do the CPT/HCPCS codes and units match how your team actually bills that program or level of care?
• Does the time span make sense for the episode, for example, 12 weeks of IOP, 30 days residential, or 6 months of weekly therapy?
• Are there obvious missing items, such as routine lab panels, UA screens, or psych evals that are almost always part of care?

Downstream, revenue cycle teams should reconcile high-dollar episodes against the original estimate. If the billed charges go far beyond what was projected, the account may need review for documentation, rate issues, or possible patient communication to avoid disputes.

• Quoting only the first session or first week for ongoing therapy, IOP, or residential, then billing months of care without ever updating the good faith estimate, which creates a huge variance and fuels disputes and complaints.
• Using generic descriptions like "therapy services" without listing actual CPT codes and expected frequency, which makes the estimate hard to defend when a patient or regulator asks how you calculated the numbers.
• Basing the estimate on outdated cash rates or an old fee schedule, then billing at new higher rates, which forces your team into write-offs or ad hoc discounts to avoid escalation under the No Surprises Act.
• Failing to adjust the estimate when the level of care changes, for example, moving a client from PHP to residential or extending a residential stay past the original days, which can make your bill look like a surprise even if the care was appropriate.
• Not documenting that the patient chose to be self-pay even though coverage existed, which can cause confusion later if the payer denies a late claim and the patient argues that the good faith estimate should cap what they owe.

Behavioral health programs see long, variable episodes of care and frequent level-of-care changes, which makes good faith estimates both harder and more important. A residential program quoting 30 days at a per-diem rate can easily end up at 60 or 90 days once clinical reality hits. If no updated estimate is offered, the family may challenge everything beyond the original window.

Carve-out behavioral health plans and Medicaid managed care add complexity because benefits for mental health or SUD may sit with a separate vendor. Even when a patient is ultimately insured, a family may choose self-pay to avoid narrow networks or prior auth. Those self-pay choices trigger GFE requirements and set expectations that can collide with later single-case agreements or retroactive authorization decisions.

Per-diem billing in residential, PHP, and IOP also distorts patient expectations. Patients often anchor on "per day" or "per week" rates quoted verbally. If the written GFE does not clearly state the total expected number of days or weeks, plus what happens if treatment is extended, you risk both collections delays and regulatory complaints.

State Medicaid and SUD authorities may also reference GFEs in program audits, especially for block-grant funded or hybrid models where some services are grant-funded and others are self-pay. Clean GFEs that match your actual billing pattern show that your pricing and patient communication practices are serious, which can matter when contracts or licenses are renewed.

AI can help with good faith estimates by pulling fee schedules, typical treatment plans, and known payer benefit data to propose realistic scenarios. An agent can look at diagnosis, level of care, and program patterns to suggest a likely course of care, then auto-fill the estimate with codes, units, and rates for staff to review before handing anything to a patient.

Supabill's benefits-verification agent can ingest eligibility responses, identify when a patient is uninsured or electing to be self-pay, and trigger GFE workflows with the correct charge data. A claims-scrubbing agent can later compare final billed charges to the original GFE and flag outliers so staff can decide if an updated estimate, patient outreach, or an internal compliance review is needed. Humans still own the judgment calls: choosing reasonable length-of-stay assumptions, handling edge cases like complex co-occurring disorders, and talking with patients and families when care needs to go beyond what was initially projected.

When is a good faith estimate required for behavioral health services?

A good faith estimate is required for most scheduled non-emergency services when a patient is uninsured or chooses not to use their insurance and requests or schedules care. That applies to therapy, psychiatry, IOP, PHP, residential, and most other non-emergency behavioral health services, including telehealth. Source

Does a good faith estimate have to be exact?

No, but it must be based on what is reasonably expected at the time. You are not expected to predict every change in treatment, but large unexplained gaps between the estimate and the final bill can trigger disputes and may lead to refunds or adjustments. Source

What happens if the final bill is higher than the good faith estimate?

If the final bill is substantially higher than the estimate, uninsured or self-pay patients may be able to start a patient-provider dispute resolution process under the No Surprises Act. In practice, many providers choose to adjust or write off charges above the estimate if the gap cannot be clinically and operationally justified. Source

Do good faith estimate rules apply when a patient uses insurance?

Current federal GFE requirements focus on uninsured and self-pay patients. For patients using insurance, separate advanced explanation of benefits rules may apply at the payer level, and you can still offer informal estimates as a best practice, but they do not carry the same formal dispute rights as an uninsured/self-pay GFE. Source

Are Medicaid and Medicare patients covered by good faith estimate rules?

Medicare and most Medicaid enrollees already have protections from surprise billing and balance billing, and those programs have their own estimate and notice rules. You should still provide clear cost information, but the No Surprises Act GFE process is aimed primarily at uninsured and self-pay patients. Source

• CMS - No Surprises Act