Who has to pay after a code 14 denial?

Usually the provider's problem — not yours. The letters in front of the number matter: CO (contractual obligation) usually means an in-network provider must absorb it, while PR (patient responsibility) means the plan says you owe it.

How long do I have to appeal?

It depends on your coverage: 180 days for most employer and marketplace plans, 120 days for Original Medicare, about 90 days for Medicaid (varies by state), and only 65 days for Medicare Advantage. Set your deadline clock before you do anything else.

All denial codes · code 14

Denial code 14: what it means — and how to fight it

Denial code 14 (shown on your EOB as CO-14 or PR-14) means: “The date of birth follows the date of service.” In plain English: Your birth date on the claim is later than the day you got care, which is impossible. Someone typed a date wrong.

high appealability Usually the provider's problem — not yours

What they're really saying

“The date of birth follows the date of service.”

Your birth date on the claim is later than the day you got care, which is impossible. Someone typed a date wrong.

Your odds

Strong — this type of denial has real weaknesses.

Clerical fixes like this are corrected most of the time once someone looks.

Fewer than 1 in 100 denied claims are ever appealed. When people do appeal, roughly 4 in 10 win the first round — and independent external review overturns 40–50% of what reaches it.

How to appeal a code 14 denial

Decode. You just did — this page is step one.
Set your clock. 180 days for most employer and marketplace plans, 120 for Original Medicare, ~90 for Medicaid, only 65 for Medicare Advantage.
Urgent? If this is care you still need, call and request an expedited appeal — they must decide within 72 hours.
Read your date of birth off your insurance card and confirm it with the billing office. Compare your date of birth on your insurance card to what the office has on file. Ask for a corrected claim. If the wrong birth date is in the plan's own records, ask member services to update it so future claims do not bounce.
Send it certified. Letter plus evidence, keep copies of everything.
Escalate. Denied again? Independent external review — a doctor who doesn't work for your insurer decides.

Do it in minutes, free

The AppealClock tool translates your denial, drafts your appeal letter, computes your exact deadline — and watches the clock so you don't have to. No account. Your medical details never leave your device.

Start your appeal & set your clock →

Common questions

What does denial code 14 mean?: Your birth date on the claim is later than the day you got care, which is impossible. Someone typed a date wrong.
Can I appeal a CO-14 or PR-14 denial?: Yes. Appealing is free and it is your legal right. For this code the odds are high: Clerical fixes like this are corrected most of the time once someone looks. Fewer than 1 in 100 denials are ever appealed — insurers count on silence.
Who has to pay after a code 14 denial?: Usually the provider's problem — not yours. The letters in front of the number matter: CO (contractual obligation) usually means an in-network provider must absorb it, while PR (patient responsibility) means the plan says you owe it.
How long do I have to appeal?: It depends on your coverage: 180 days for most employer and marketplace plans, 120 days for Original Medicare, about 90 days for Medicaid (varies by state), and only 65 days for Medicare Advantage. Set your deadline clock before you do anything else.