Before a scheduled medical visit, test, procedure, or treatment, your healthcare provider may check your insurance eligibility and benefits. This process helps the provider confirm whether your coverage is active, understand how your plan may cover the service, and estimate what you may need to pay.
Eligibility verification can happen before an office visit, diagnostic test, imaging service, therapy appointment, hospital admission, outpatient procedure, or surgery. It helps identify missing insurance information and coverage requirements before treatment begins.
What is eligibility verification in medical billing?
Eligibility verification is the process a hospital, clinic, physician’s office, laboratory, imaging center, or other healthcare organization uses to confirm your health insurance information before treatment.
The provider generally checks:
- Whether your policy is active on the planned date of service.
- Whether you are enrolled as the subscriber or an eligible dependent.
- Whether the physician and facility participate in your plan’s network.
- Whether your plan includes benefits for the planned service.
- How much of your deductible you have met.
- Whether a copayment or coinsurance may apply.
- Whether your plan requires prior authorization.
- Whether you need a referral from your primary care provider.
- Whether another insurance plan should pay first.
- Whether your plan has visit, frequency, unit, dollar, or benefit limits.
Under federal healthcare transaction standards, providers can send an electronic 270 eligibility inquiry to a health plan. The insurer returns a 271 eligibility response with available eligibility and benefit information.
The response may include active coverage, deductibles, copayments, coinsurance, and coverage information for specific service categories. For more information, review the CMS eligibility and benefit transaction guidance.
Eligibility, benefits, authorization, and payment are different
These terms describe separate parts of the insurance process. Active coverage does not automatically mean that every service will be covered.
| Term | What it tells you | What it does not guarantee |
|---|---|---|
| Eligibility | Whether you are enrolled in an active insurance plan on the date of service. | That a specific treatment is covered or that the claim will be paid. |
| Benefits verification | How your plan may cover a particular category of care. | That the final claim meets every coverage requirement. |
| Network verification | Whether the physician or facility participates in your specific plan. | That every professional involved in your care is in-network. |
| Referral | Whether your primary care provider must direct you to a specialist or service. | That the insurer has also granted prior authorization. |
| Prior authorization | Whether the health plan approved a specific service before treatment. | That the insurer will pay the final claim. |
| Medical necessity | Whether the service meets the insurer’s clinical coverage requirements. | That active coverage alone makes every treatment payable. |
| Claim adjudication | How the insurer processes the claim after treatment. | That the pre-service estimate will equal your final balance. |
Eligibility
Eligibility answers a basic question: Is your insurance active on the planned date of service?
You can have active coverage while a particular treatment is excluded, limited, out-of-network, or subject to additional requirements.
Benefits verification
Benefits verification looks more closely at how your plan covers a particular type of care. A plan may apply different benefits to primary care, specialist visits, hospital services, imaging, therapy, mental health care, laboratory testing, medical equipment, and prescription drugs.
Prior authorization
Prior authorization is approval that a health plan may require before you receive a service, treatment, or prescription. A service may be included in your benefits but still require advance approval.
For more information, review the HealthCare.gov definition of prior authorization.
Referral
A referral is usually a written order from your primary care provider directing you to a specialist or another medical service. Many health maintenance organization plans require referrals for certain types of care.
For more information, review the HealthCare.gov referral definition.
Medical necessity
Having active insurance does not automatically mean every treatment will be covered. The insurer may review the service to decide whether it meets the plan’s medical-necessity requirements.
In other words, the insurer considers whether the treatment is appropriate and necessary for your condition under the plan’s coverage policy.
Claim payment
Your insurer makes the final payment decision after your provider submits the claim. The insurer reviews what services you received, where you received them, who provided them, and whether the claim meets the plan’s coverage requirements.
Eligibility check before treatment
What happens before your appointment
The exact process varies by provider and health plan, but most eligibility checks include these stages.
- Collect your information
The provider records your legal name, date of birth, insurance card, member ID, and subscriber details.
- Confirm active coverage
The provider checks whether your policy is active on the planned date of service.
- Review your benefits
The provider checks the deductible, copayment, coinsurance, service benefits, and plan limits.
- Check plan requirements
The provider reviews network status, referrals, prior authorization, and other insurance coverage.
- Discuss expected costs
The provider shares the available estimate and explains which details still need confirmation.
How eligibility verification works
You schedule an appointment or service
Eligibility verification often begins when you call, book online, or receive an order for treatment.
The scheduling team may ask for:
- Your name and date of birth.
- Your reason for the visit.
- Your insurance company.
- Your member identification number.
- The policyholder’s name.
- A copy of the front and back of your insurance card.
- Information about secondary coverage.
- The referring provider’s name.
- The planned service or procedure.
For a routine office visit, the provider may complete the check shortly before the appointment. Verification for surgery, imaging, infusion therapy, rehabilitation, or another higher-cost service may begin several days or weeks earlier.
The provider matches your information to the insurance record
The provider enters your information into its registration, practice management, billing, or electronic health record system.
Your legal name, date of birth, member ID, and policyholder information generally need to match the insurer’s enrollment record. A typo, missing number, outdated card, or nickname can prevent the system from locating the correct policy.
The provider sends an eligibility inquiry
The provider may check your coverage through:
- An electronic 270 and 271 transaction.
- The insurer’s provider portal.
- A healthcare clearinghouse.
- An automated telephone system.
- The insurer’s provider-services department.
For Medicare, authorized providers and clearinghouses can use the HIPAA Eligibility Transaction System to submit real-time 270 requests and receive 271 responses.
The insurer returns eligibility and benefit information
The response may include:
- Active or inactive coverage.
- Effective and termination dates.
- The plan name and plan type.
- Primary care provider information.
- In-network and out-of-network benefits.
- The annual deductible.
- The amount of the deductible already met.
- Copayment and coinsurance information.
- Out-of-pocket maximum information.
- Service limits.
- Coordination-of-benefits information.
- Possible referral or authorization requirements.
Not every insurer returns the same level of detail. When the electronic response is incomplete, the provider may need to use the payer portal or contact the insurer directly.
The provider reviews the planned service
Active medical coverage does not automatically confirm coverage for a specific treatment. The provider should compare the plan information with the actual service you expect to receive.
This review may include:
- The expected procedure or treatment.
- The reason for the service.
- The treating physician or professional.
- The facility.
- The planned date of service.
- The place of service.
- The expected number of visits or treatment units.
For example, active medical coverage alone does not confirm benefits for an MRI, outpatient surgery, physical therapy, genetic testing, durable medical equipment, or an out-of-network specialist.
The provider confirms network status
The provider may confirm whether the physician and facility are in-network for your specific plan.
A single insurance company may offer several plans with different provider networks. A physician may participate in one plan but not another.
Before hospital-based or surgical care, consider checking the network status of:
- The hospital or facility.
- The surgeon.
- The anesthesiology group.
- The radiologist.
- The pathologist.
- The laboratory.
- The assistant surgeon.
- The medical equipment supplier.
For an explanation of provider networks, review the HealthCare.gov network definition.
The provider checks referral and authorization requirements
Your health plan may require one or more of the following before treatment:
- Prior authorization.
- Precertification.
- Admission notification.
- A referral from your primary care provider.
- Step therapy.
- A specific network facility.
- A particular site of service.
- Supporting clinical records.
- A physician order.
An authorization number does not always complete the process. The approval may apply only to a specific procedure, provider, facility, date range, place of service, number of visits, or number of units.
If the treatment plan changes, the provider may need to update the authorization or request a new one. RCMGen’s prior authorization services support providers with requirement screening, documentation submission, tracking, and payer follow-up.
The provider reviews other insurance coverage
If you have more than one plan, coordination-of-benefits rules determine which insurer processes the claim first.
The primary insurer pays according to its coverage first. The secondary insurer may then consider part of the remaining eligible balance. Secondary insurance does not necessarily pay every amount the primary insurer leaves unpaid.
Tell the provider if you have:
- Employer-sponsored insurance.
- Coverage through a spouse or parent.
- Medicare.
- Medicaid.
- TRICARE.
- COBRA.
- Workers’ compensation.
- Automobile or no-fault insurance.
- Liability coverage.
- A supplemental health plan.
For more information, review the CMS coordination-of-benefits guidance.
The provider estimates what you may owe
After reviewing the available benefit information, the provider may estimate your financial responsibility.
The estimate may include:
- A copayment.
- Your remaining deductible.
- Coinsurance.
- Charges for noncovered services.
- Out-of-network costs.
- Amounts above plan limits.
- Facility charges.
- Separate professional charges.
A deductible is the amount you generally pay for covered services before the plan begins paying according to its benefits. A copayment is usually a fixed amount. Coinsurance is the percentage of the plan’s allowed amount that you may need to pay. Review the HealthCare.gov definitions of deductible, copayment, coinsurance, and allowed amount.
The estimate may change if the physician performs additional services, the procedure changes, another provider becomes involved, your deductible changes, or the insurer applies a different benefit.
The provider may verify your coverage again
Your insurance information can change between scheduling and treatment. The provider may repeat the verification:
- A few days before the appointment.
- On the date of service.
- Before a high-cost procedure.
- When you report a coverage change.
- At the start of a new calendar year.
- When current information does not match an earlier response.
Bring or submit your current insurance card at every visit, even when you have received care from the same provider before.
What information do you need before treatment?
Complete and accurate information helps the provider locate the correct policy, check the correct benefits, and avoid unnecessary billing delays.
Your identification information
Be prepared to provide:
- Your full legal name exactly as it appears on your insurance card.
- Your date of birth.
- Your current home address.
- Your telephone number.
- Your email address.
- A photo ID when requested.
- Any previous name used in your insurance or medical records.
Your primary insurance information
Provide:
- The insurance company’s name.
- The plan name or plan type.
- Your member or policy ID.
- Your group number.
- A clear copy of the front and back of your insurance card.
- The payer or claims information printed on the card.
- The policy’s effective date, when known.
The subscriber’s information
If the policy belongs to another person, the provider may need:
- The subscriber’s full legal name.
- The subscriber’s date of birth.
- Your relationship to the subscriber.
- The subscriber’s address.
- The subscriber’s employer or group name.
- Any subscriber or employee number required by the plan.
Your secondary insurance information
Provide the same information for every secondary or supplemental plan, including the front and back of each insurance card.
Tell the provider which plan you believe is primary. The provider or insurers may still need to confirm the correct payment order.
Information about the planned treatment
For a detailed benefit check, the provider may need:
- The treating physician’s name.
- The facility where treatment will occur.
- The expected date of service.
- The type of visit, test, procedure, or treatment.
- The physician’s order.
- The diagnosis or reason for treatment.
- The expected procedure code, when available.
- The number of planned visits or treatment units.
- Whether the service is inpatient or outpatient.
- Whether the service will occur in an office, hospital, clinic, or ambulatory surgery center.
Your referral or authorization information
When applicable, keep the following information ready:
- The referring physician’s name.
- A copy of the referral.
- The authorization number.
- The authorization effective dates.
- The approved procedure or service.
- The approved number of visits or units.
- The approved provider and facility.
Accident or work-injury information
If your treatment relates to an accident or workplace injury, the provider may ask for:
- The date and location of the accident.
- Whether the injury happened at work.
- Your employer’s name.
- The workers’ compensation carrier.
- The claim number.
- The adjuster’s name and contact information.
- Automobile insurance information.
- A police or accident report number.
- Attorney information, when applicable.
This information helps the provider determine whether health insurance, workers’ compensation, automobile insurance, or another liability payer should process the claim first.
What does the provider verify before treatment?
Whether the policy is active
The provider checks whether your insurance policy is active on the planned date of service. Presenting an insurance card does not prove that the policy remains active.
Whether you are covered under the policy
The provider confirms whether you are the subscriber, spouse, child, or another eligible dependent.
Whether the provider and facility are in-network
The physician and facility may have separate network contracts. Confirm both before scheduled hospital care, imaging, surgery, anesthesia, laboratory work, or other facility-based services.
Whether the planned service is covered
The provider checks the applicable benefit category and any exclusions, restrictions, or limitations.
How much of the deductible remains
The provider may review:
- The annual deductible.
- The amount already met.
- The remaining amount.
- Individual and family deductibles.
- In-network and out-of-network deductibles.
- Separate medical and prescription deductibles.
Whether a copayment applies
Your plan may apply different copayments to primary care, specialist visits, urgent care, emergency care, therapy, imaging, laboratory services, and prescription drugs.
Whether coinsurance applies
After you meet the applicable deductible, you may need to pay a percentage of the plan’s allowed amount. This percentage is your coinsurance.
Your out-of-pocket maximum
The out-of-pocket maximum generally limits how much you pay in a plan year for covered in-network services through deductibles, copayments, and coinsurance.
Premiums, noncovered services, many out-of-network charges, and costs above the allowed amount generally do not count toward this limit. Review the HealthCare.gov out-of-pocket maximum definition.
Whether benefit limits apply
Your plan may limit:
- Therapy visits.
- Chiropractic visits.
- Home health services.
- Behavioral health sessions.
- Durable medical equipment.
- Certain tests or procedures.
- Treatment frequency.
- Inpatient or skilled nursing days.
Whether the plan requires a specific treatment location
Your coverage and cost may vary depending on whether you receive the service in:
- A physician’s office.
- A hospital outpatient department.
- An ambulatory surgery center.
- An independent imaging center.
- An in-network laboratory.
Questions to ask before treatment
Patient insurance checklist
- Is my insurance active for the planned date of service?
- Is the physician in-network for my exact plan?
- Is the hospital, clinic, laboratory, or surgery center in-network?
- Is the planned treatment a covered benefit?
- Does the service require prior authorization?
- Do I need a referral from my primary care provider?
- Has the authorization been approved for the correct procedure, provider, facility, date, and number of visits?
- How much of my deductible remains?
- Will I owe a copayment or coinsurance?
- Are there separate facility, anesthesia, laboratory, imaging, pathology, or equipment charges?
- Does the plan limit the number of visits or treatment units?
- Can the provider give me a written cost estimate?
- Could any part of my treatment be out-of-network?
- Will more than one provider or organization send me a bill?
- What should I do if the insurer later denies the claim?
When you contact the insurer, write down the date, the representative’s name, and any reference number provided during the call.
Why verification does not guarantee payment
Insurance verification shows that your coverage is active and that the planned service may fall within your benefits. The insurance company makes its final payment decision only after reviewing the submitted claim.
The claim may still be denied or processed differently when:
- Your information is incorrect or incomplete.
- The service is excluded from your plan.
- Prior authorization was required but not obtained.
- A required referral was missing.
- The insurer decides that the service did not meet its medical-necessity criteria.
- The provider or facility is outside your plan’s network.
- You reached a visit, unit, or benefit limit.
- Another insurer should have processed the claim first.
- The claim contains coding errors or inconsistencies.
- Supporting medical records were missing.
- Your coverage changed before treatment.
- The service occurred outside the authorization period.
- The billed treatment did not match the authorized service.
Eligibility verification reflects the information in the insurer’s system at the time of the check. The final decision depends on the actual services, submitted codes, documentation, authorization details, and plan rules.
What to do if the provider cannot verify your coverage
When the office cannot confirm your coverage, first check whether the information you provided matches your current insurance card.
- Confirm your legal name, date of birth, member ID, and group number.
- Give the provider a clear copy of both sides of your current insurance card.
- Call the member-services number printed on the card.
- Ask whether your policy is active for the planned date of service.
- Confirm that your premiums or enrollment are current.
- Ask whether the physician and facility are in-network.
- Ask whether the insurer has another plan listed as primary.
- Request a confirmation or call reference number.
- Contact your employer’s benefits department if the plan is job-based.
- Ask whether the appointment can proceed as self-pay if the problem cannot be resolved.
Do not assume that presenting an insurance card proves that the policy is active.
What uninsured and self-pay patients should know
If you do not have health insurance or choose not to use it, you can generally request a good faith estimate of expected charges.
Providers usually must give you an estimate when you request one or schedule care at least three business days in advance. A good faith estimate lists the expected charges from the provider or facility that issues it.
Review the CMS good faith estimate guide.
A single estimate may not include every organization involved in your care. For example, you may need separate estimates from the surgeon, hospital, anesthesiologist, laboratory, or imaging provider.
If one provider’s bill is at least $400 more than that provider’s good faith estimate, you may qualify for the federal patient-provider dispute process. Review the CMS medical bill dispute requirements.
Emergency treatment works differently
Insurance verification should not delay emergency evaluation or stabilizing treatment.
Under the Emergency Medical Treatment and Labor Act, Medicare-participating hospitals that provide emergency services must offer an appropriate medical screening examination when a person requests examination or treatment for an emergency condition. Hospitals must provide stabilizing treatment when an emergency medical condition is identified, regardless of the person’s ability to pay.
For more information, review the CMS Emergency Medical Treatment and Labor Act resource.
The No Surprises Act also protects many patients with private insurance from certain unexpected out-of-network bills involving emergency care and some nonemergency services at in-network facilities.
Review the CMS medical billing rights guide.
A quick check before your appointment
- Confirm your appointment date, time, provider, and location.
- Bring your most recent insurance card.
- Check that your legal name and date of birth match the insurer’s record.
- Tell the provider about every insurance plan you have.
- Ask whether the provider and facility are in-network.
- Ask whether the service requires authorization or a referral.
- Confirm that the authorization matches the planned service.
- Ask about your deductible, copayment, and coinsurance.
- Ask whether other professionals will bill separately.
- Request a written estimate when available.
- Keep copies of referrals, authorizations, estimates, and insurer reference numbers.
- Tell the provider immediately if your insurance changes.
Frequently asked questions
What is eligibility verification in medical billing?
Eligibility verification is the process a healthcare provider uses to confirm that your health insurance is active and review available benefit information before treatment.
What information is needed to verify insurance?
The provider generally needs your legal name, date of birth, current insurance card, member ID, group number, subscriber information, secondary insurance, and details about the planned treatment.
Does active insurance mean the service is covered?
No. Active coverage confirms enrollment in the plan. A service may still be excluded, limited, out-of-network, or subject to a referral, authorization, or medical-necessity review.
What are 270 and 271 transactions?
A healthcare provider sends a 270 eligibility inquiry to the health plan. The insurer returns a 271 response with available eligibility and benefit information.
Does eligibility verification guarantee payment?
No. The insurer makes the final decision after it reviews the submitted claim and applies the plan’s coverage requirements.
What is the difference between eligibility and prior authorization?
Eligibility confirms that your policy is active. Prior authorization is a separate approval that your plan may require for a specific treatment, medication, provider, location, date range, or number of visits.
Can I verify my insurance myself?
Yes. Call the member-services number on your insurance card or use your plan’s member portal. Ask about active coverage, network status, service benefits, deductible, copayment, coinsurance, referral requirements, and prior authorization.
Why does the provider request my insurance card at every visit?
Plan information, member IDs, networks, coverage dates, and coordination-of-benefits records can change. A current card helps the provider verify the correct policy.
Why can my final bill differ from the estimate?
The final treatment, procedure codes, deductible balance, network status, insurer decision, and services from other professionals may differ from the information available before treatment.
What should I do if my insurance changes before treatment?
Contact the provider as soon as possible. Provide the new insurance card and ask the office to repeat the eligibility, benefit, network, referral, and authorization checks.