How to Fill Out and Submit the BCBSTX Coordination of Benefits Form

The BCBSTX Coordination of Benefits form is a one-page questionnaire you complete whenever you or a dependent has health coverage in addition to your Blue Cross and Blue Shield of Texas plan. To fill it out, gather both insurance cards and any Medicare card or court decree, enter your policyholder information at the top, complete the four lettered sections about the other coverage, sign and date it, and return it to BCBSTX by the member portal, mail, or fax. Until BCBSTX has this information, it may hold or deny your claims.1Blue Cross and Blue Shield of Texas. BCBSTX Help Center

When BCBSTX Needs This Form From You

BCBSTX sends the questionnaire when its records suggest another payer might exist, but you don’t have to wait for a letter. File it anytime your coverage picture changes. Common triggers:

  • You carry your own employer plan and are also listed as a dependent on a spouse’s or partner’s plan.
  • You or a dependent become eligible for Medicare Part A, Part B, or Part D while still on a BCBSTX policy.
  • A dependent under 26 stays on a parent’s BCBSTX plan while also enrolling through their own employer or the marketplace.2HealthCare.gov. Health Insurance Coverage For Children and Young Adults Under 26
  • A family member has TRICARE, Medicaid, or another government program alongside the BCBSTX policy.
  • A divorce, separation, or remarriage changes who pays first for the children.
  • A secondary plan terminates, and BCBSTX needs to stop coordinating with a carrier that no longer covers you.

Skipping the form, or ignoring a questionnaire that arrives in the mail, usually ends the same way: claims get held or denied because BCBSTX doesn’t know whether to pay first or second.

What to Have in Front of You Before You Start

Pull everything together first. Missing information is the most common reason the form comes back for clarification.

  • Your BCBSTX member ID card, for your member ID number and group number.
  • The other insurer’s ID card, for the carrier’s full legal name, policy or contract number, group number, and claims phone number.
  • Effective date of the other coverage, and the termination date if it has ended.
  • The other policyholder’s employer name and address, and whether that person is actively working, retired, inactive, or on COBRA.
  • Any Medicare card involved, with the Medicare number and the separate effective dates for Part A, Part B, and Part D.
  • Any court decree assigning responsibility for a child’s health coverage.
  • Names, dates of birth, sex, and relationship for every dependent on your BCBSTX policy.

Filling Out Each Section

The questionnaire has a header block, four lettered sections, and a signature line.

Header: Policyholder Information

Enter your name exactly as it appears on your BCBSTX policy, your group number, and your member ID. Verify the digits against your card. Transposed numbers are the single most common reason a form gets kicked back.

Section A: Other Insurance

Check whether the other coverage is health or dental, and whether it is a group plan, individual policy, student policy, or Medicare supplement. Fill in the carrier’s name, mailing address, and phone number. Enter the other policyholder’s name, date of birth, and policy ID number. List every dependent from your household who is also covered under that other plan, with each dependent’s effective or cancellation date if it differs from the policyholder’s. Finally, note the policyholder’s employment status with that plan’s employer: actively working, retired (with retirement date), inactive, or on COBRA (with COBRA start date).

Section B: Medicare

If no one on your BCBSTX policy has Medicare, check “No” and move on. Otherwise, list each covered person’s name and Medicare number, then enter the Part A, Part B, and Part D effective dates in separate fields. Indicate the reason for eligibility: age, disability, or end-stage renal disease. For disability or ESRD, the form also asks for the first date of disability or the first date of dialysis, whether dialysis began in a facility or at home, and whether a transplant has been performed. The reason for Medicare matters because it changes which plan pays first.3Medicare. How Medicare Works With Other Insurance

Section C: Court Order

Answer whether a court order requires a specific person to maintain health coverage for any of your dependents. If yes, list the dependent names, the person required to carry coverage, that person’s relationship to the children, and who has custody more than 50 percent of the time. Don’t leave Section C blank because you’re unsure. A blank answer tells BCBSTX there is no decree, and that changes how the order of benefits is determined.4Legal Information Institute. 28 Texas Admin Code 3-3507 – Rules for COB and Order of Benefits

Section D: Dependent Information

List every dependent on your BCBSTX policy, whether or not they are on the other plan. Provide name, relationship, date of birth, and sex for each. Social Security numbers are optional but can speed processing if BCBSTX needs to match records across carriers.

Signature

Sign and date the form at the bottom. An unsigned form will not be processed.

A Quick Word on Which Plan Pays First

You don’t choose. Texas regulations set the order automatically, and knowing the basics helps you answer Sections A, B, and C without second-guessing. If you are covered under one plan as the employee or subscriber and another as a dependent, the plan that covers you in your own right is primary. For a child covered under both parents who live together, the parent whose birthday falls earlier in the calendar year is primary; only the month and day count. If a court decree names one parent as responsible for the child’s health coverage, that parent’s plan is primary once the insurer knows about the decree, which is why Section C exists. For Medicare, an active employee’s employer plan is usually primary and Medicare secondary; after retirement, Medicare becomes primary. TRICARE is secondary to employer-sponsored or private coverage for everyone except active-duty service members, and Medicaid is always the payer of last resort by federal law.5Centers for Medicare and Medicaid Services. Coordination of Benefits6National Association of Insurance Commissioners. Coordination of Benefits Model Regulation

How to Submit the Completed Form

Pick whichever channel gives you the best paper trail.

  • Online through Blue Access for Members: log in at bcbstx.com, open the message center, and attach the completed form as a scanned PDF or photo. Wait for the confirmation screen and save a screenshot.
  • Mail: send it to the address printed on your questionnaire. The main BCBSTX processing office is 1001 E. Lookout Drive, Richardson, TX 75082, but some group plans route elsewhere, so follow the instructions on your form. Certified mail gives you a delivery receipt.7Blue Cross and Blue Shield of Texas. Contact Us
  • Fax: use the number printed at the bottom of the questionnaire and keep the transmission confirmation.
  • Phone: for help filling it out, call the member services number on the back of your ID card. In some cases, customer service can update COB information verbally.

If you don’t already have the questionnaire, download it from the Form Finder tool in the forms-and-documents area of bcbstx.com, or from inside Blue Access for Members after logging in.8Blue Cross and Blue Shield of Texas. Access BCBSTX Forms and Documents

After You Submit

BCBSTX doesn’t publish an official processing time for COB updates. In practice, give it two to three weeks before expecting your profile to reflect the change. You can check status by logging into Blue Access for Members and viewing the “other insurance” section of your profile; once it processes, the status should move from pending to active or updated.

Until then, claims may be held or denied because BCBSTX’s system still shows outdated coverage. If you have an appointment during that window, tell the provider’s billing office that a COB update is in progress and which plan should be billed as primary. That one call heads off the most common post-submission problem: a claim bouncing between carriers because neither has current information.

File a new questionnaire anytime your situation shifts again. A spouse changes jobs, a plan ends, Medicare kicks in: BCBSTX’s records don’t update on their own when something changes at another carrier, so every change needs a fresh form.