Whose Date of Birth Goes on the Insurance Claim?

Last reviewed: October 7, 2026.

The patient’s own date of birth always goes in the patient fields, and it must match the payer’s record. The subscriber’s date of birth is required on the claim only when the patient is the subscriber. When the patient is a spouse or child on someone else’s plan, payers generally process the claim without the subscriber’s birth date.

Patient versus subscriber

The patient is the person you saw. The subscriber (also called the policyholder or insured) is the person the coverage is issued to. A parent who pays the bill, or a spouse who is the billing contact, is not automatically the subscriber. Check the card and the relationship before you copy one person’s details into the other’s fields.

SimplePractice’s insurance setup instructions keep client details separate from the policyholder section; use Same as client only when the client really is the policyholder. Sessions Health’s client setup guide likewise keeps the client’s birthday and legal name separate from contacts.

What we see in practice

• A one-day-off birth date stops claims. We have had claims held because the patient’s birth date on file was a single day off from the payer’s record. The fix was to have the practice confirm the date with the client, correct it, and resubmit.

• Insurance cards often leave the birth date off. Many cards print the member ID and plan but no birth date, so you cannot fill it in from the card. Get it from intake or the client.

• Same names cause mix-ups. In one case a payer had merged a client’s coverage record with a parent who had the same name. Confirming the client’s birth date exposed the problem, and the client had to call the payer to separate the records.

• You usually do not need the subscriber’s birth date for a dependent. Our billing team has seen dependent claims paid with no subscriber birth date or address on file. In the standard electronic claim, subscriber demographics are required only when the patient is the subscriber.

One catch: some EHRs will not save a policy with a non-self subscriber unless you enter that person’s birth date. In that case you do need it from the client. Never guess it.

Fixing a date-of-birth rejection

1. Read the rejection: does it point to the patient or the subscriber?

2. Confirm the relationship on the policy (self, spouse, child, other).

3. Confirm the correct birth date with the client, against their member record or intake form.

4. Correct the date in the EHR; do not change other people’s records to match.

5. Resend the claim, or ask your biller to. If the payer’s own record is wrong, the client has to ask the payer to fix it before the claim will process.

Do not keep resubmitting with different birth dates until one goes through. That creates a trail of rejected claims and can mask a payer record problem.

For client-uploaded insurance, see the Sessions Health insurance-upload checklist.

Related Guides

• Insurance Card Name Does Not Match the Sessions Health Chart

Frequently Asked Questions

Do I need the parent’s birth date to bill for a child?

Usually not for the claim itself; payers process dependent claims with the child’s details and the family member ID. Some EHRs still require it to save the policy, so you may need it for setup.

Does the person paying count as the subscriber?

No. The subscriber is the person the insurance is issued to, which may be different from whoever pays your invoices.

The client says the payer has their birth date wrong. What now?

Keep the correct date in your records and have the client call the payer’s member services to fix theirs. Hold the claims until the payer confirms the correction.

Sources

SimplePractice: Setting up insurance billing for your clients

Sessions Health: Client Setup