Payer Enrollment: What to Do When a Contract Is Silent

Credentialing, contracting and payer enrollment are three decisions

A practice usually treats the payer packet as one process. It is three, and they finish on different dates. Credentialing is the clinical review: the plan checks licensure, work history and malpractice history, then approves the clinician to treat its members. Contracting is the business document that sets rates, effective date, termination rights and delegation. Enrollment is the administrative load of your NPI, TIN and location so a claim can adjudicate.

The order matters. A signed contract does not create a payable claim until the payer loads the provider record, and a credentialing approval does not create a rate. Medicare publishes all three steps, from the CMS-855 applications and PECOS to the effective-date rule in 42 CFR 424.520. Commercial payers publish less. We run the credentialing side of that work through medical credentialing services.

• Decide which of the three steps a question belongs to before you email the payer
• Get the team that owns the provider record named in the agreement
• Track the approval date, the signature date and the claims load date separately

What a payer enrollment application commits the practice to

An application is a signed certification. On the Medicare side, the CMS-855B used by a group practice asks for the practice location and the requested effective date, requires disclosure of ownership and managing control, and must carry a signature from an authorized or delegated official. CMS states that a missing signature or missing supporting documentation delays or returns the application.

Commercial applications copy that structure. You attest to licensure and sanctions status, disclose who owns the practice, name every location and tax identification number, and accept a duty to keep provider data current. Aetna’s provider manual puts a cadence on that duty: it states that federal and applicable state law require the provider and the plan to keep information current and confirm accuracy at least every 90 days.

The commitment that costs money sits in the paragraph nobody reads aloud. You agree to accept the contracted rate for every member in that product, to treat the plan’s payment as payment in full, and to hold the patient harmless for the balance. Sign on behalf of a group and the clinicians who never opened the application are bound by it too.

• Note who signs, and whether that authority covers every provider in the practice
• List the locations, tax identification numbers and products the application covers
• Read the hold harmless clause before you sign, not after a patient complaint

Effective-date mechanics decide whether you can bill backwards

Medicare’s effective date is a published rule rather than a negotiation. For physicians, non-physician practitioners and their organizations, 42 CFR 424.520 sets the effective date at the later of the date of filing of an application that is later approved, or the date the provider first began furnishing services at the enrolled location. Notice which date is absent from that test: the approval date.

42 CFR 424.521 then permits retrospective billing for up to 30 days before that effective date, extended to 90 days when a presidentially declared disaster precluded enrolling in advance. Documentation establishes both dates. The application receipt date stamped by the contractor, the license effective date, and the service records showing where and when care was furnished are the three pieces that decide the outcome.

Commercial payers are a different matter. No federal rule governs a commercial effective date, so the number comes from the participation agreement, and a payer can shorten or drop its retroactive window without announcing it. Maryland’s behavioral health provider manual shows how blunt the other posture can be: it states that Maryland Medicaid does not backdate applications, and that the effective date is the date the completed application was processed.

So put the date in the agreement. Ask for the effective date to be tied to the credentialing approval date instead of the signature date, and ask for the retroactive window in the same paragraph. If the payer will not move the date, the answer to get in writing is the earliest payable date of service.

Why the fee schedule is usually an addendum, not the contract

The agreement says you will be paid per the fee schedule. The schedule is an exhibit or addendum, held outside the signature pages, which is how a negotiated rate can change while the contract sits unchanged. Rates also arrive on request: Aetna’s state supplement asks providers who need allowable fees for 11 or more codes to send a spreadsheet and tells them to expect results within 30 business days.

Two habits keep this manageable. Date every fee schedule the moment it arrives and store it beside the agreement, because the addendum you were paid under in March is the evidence in a rate dispute in September. Then request rates only for codes you bill, so the payer can answer inside its own published turnaround instead of leaving the request open.

Silence one: the contract has no timely filing term

A missing filing term is the most expensive silence, because the payer still denies under a number nobody gave you. Highmark’s provider manual states the structure plainly: claims not submitted within the time frame established in your contract will be denied for untimeliness, and where the contract is silent, claims must be received within 365 days of the last date of service in Pennsylvania and West Virginia, and within 180 days in Delaware.

UnitedHealthcare’s Wisconsin guide takes the other route. It tells participating providers to file within the time frame specified in the participation agreement, and reserves the 365 day figure for providers outside the network. The Rocky Mountain Health Plans manual, its Colorado plan, names a number for one product: 120 days for standard PRIME claims when the provider agreement does not specify one.

The written ask is one sentence. Please confirm the timely filing limit that applies to our participation agreement, in days from date of service, and confirm whether corrected claims and coordination of benefits claims carry a separate window. A written answer also fixes the date it was given, which matters when the manual is updated and the number moves. We track those numbers per payer in a timely filing limits reference.

Silence two: no appeals address and no owner for behavioral claims

Two questions decide where a claim goes, and a silent contract answers neither. The first is the appeals address and the appeal window. Aetna Better Health of Virginia publishes both the appeals address and the 60 day window in its provider quick reference guide: provider appeals go to a named post office box within 60 days of the original denial, and the guide lists a separate address for member appeals. Confirm the current version rather than last year’s copy.

The second question is who adjudicates the claim. Behavioral health is often carved out to an entity other than the medical plan. Maryland’s behavioral health provider manual describes an administrative services organization model in which specialty behavioral health services are carved out of the managed care benefit package and run by a single state-contracted entity that manages authorizations and claims processing. We cover where those claims land in behavioral health carve-outs.

Medicare splits the same way from the other direction. Drug claims covered under the Part D benefit are handled by the Part D sponsor or its pharmacy benefits manager rather than by the medical plan, as CMS describes in its Part D materials. A practice that sends a behavioral health visit or a drug claim to the medical plan’s address is sending it to an entity that cannot pay it.

Silence three: no termination-without-cause notice period

A contract that lets either party terminate without cause, and states no notice period, lets the payer end your participation on short notice. Where a state has legislated, the number is published. New Jersey’s administrative code requires a carrier to give a health care professional at least 90 days written notice before terminating network participation off a renewal date.

Florida requires a health maintenance organization to give 60 days advance written notice to a provider before canceling without cause, and to give a written reason for the termination. Illinois sets 60 days for the plan’s notice to the provider, and 90 days for a provider terminating without cause. Three states, two different numbers, and nothing that applies nationally.

Because no national rule exists, the term belongs in your agreement. Ask for 90 days written notice, a written reason on request, and payment at the contracted rate for services already authorized or under way. Continuity for patients in an active course of treatment is worth naming in the same request, since that is the term a plan is most likely to grant.

If the payer refuses the term and then uses it against you, the escalation route runs through the state department of insurance, and it works better with a paper trail. The Texas Department of Insurance publishes a provider complaint route and a clean claims portal, and its prompt pay bulletin cites the Texas Insurance Code chapters that allow 30 days to determine an electronic claim and 45 days for a non-electronic one.

Questions practices ask us about this