CO-13 Denial: "Date of Death Precedes Date of Service"

5 min read

Summary

CO-13 means the insurance records show the patient died before the date of service. For a living patient, this is almost always a records error: a wrong date, a mixed-up member, or a mistaken death record. It needs to be corrected at the source.

What happened

A claim was denied with CO-13. The official wording is: "The date of death precedes the date of service." The plan's records show a date of death that is earlier than the date the care was given.

This can be upsetting to read. If the patient is living, it is a records problem, not a statement about you.

What it means

There are a few common causes:

Wrong date of service on the claim (a typo, or the wrong year).
Wrong member on the claim, such as a family member with a similar name or ID.
A mistaken death record. Sometimes a living person is wrongly marked as deceased, for example in Social Security records. Medicare and other plans can pick this up.
Care for a loved one who has died, where the recorded date of death is wrong, or the service date on the claim is after the actual death.

CO means Contractual Obligation. While the error is sorted out, an in-network provider generally should not shift this amount to you.

Who handles this

The provider's billing office fixes a wrong date of service or wrong member and resubmits the claim.
Your insurance plan fixes its own member record.
The Social Security Administration fixes a mistaken death record. For Medicare, this is often the source.

What to do next

Call your plan. Ask what date of death is on file and where it came from.
If the date of death is wrong and you are living, contact Social Security right away and bring proof of identity. A wrong death record can also affect benefits and banking.
After the record is fixed, ask the provider to resubmit the claim.
If the date of service or member was wrong, ask the provider to send a corrected claim.
For a loved one who has died, ask the provider to confirm the service date against the death certificate.
Keep notes of every call: date, name, reference number.

Call script: your insurance plan

"Hi, I'm calling about a claim from [date] that was denied with code CO-13, date of death precedes date of service. I am the member and I am alive. Can you tell me what date of death is on file and where that information came from? What do you need from me to correct it, and can you add a note to reprocess the claim once it's fixed? Can I have a reference number?"

Call script: provider billing office

"Hi, a claim for [patient name], date of service [date], was denied with CO-13. Can you check that the date of service and member ID on the claim are correct? If they are, the plan's record needs to be fixed and I'm working on that. Please hold the account and don't send it to collections while this is corrected. Can I have your name and a reference number?"

Call script: Social Security (if you were wrongly listed as deceased)

"Hi, I've learned that my record may list me as deceased, and it's causing my medical claims to be denied. I'd like to correct my record. What proof of identity do I need to bring, and can I make an appointment at a local office?"

Key takeaways

CO-13 means records show a date of death before the service date.
For a living patient, it is a records error, not a real denial of care.
Common causes: wrong service date, wrong member, or a mistaken death record.
Social Security fixes a mistaken death record; the provider fixes claim errors.
Ask the provider to hold the bill while the record is corrected.

Common questions

Do I have to pay a CO-13 denied claim?

Usually not while it's a records error. Ask the provider to hold the account while the record is corrected and the claim is resubmitted.

How do I fix a wrong death record?

Contact the Social Security Administration and bring proof of identity. Once corrected, your plan's record can be updated.

What if the patient has really passed away?

Ask the provider to check the date of service against the death certificate. If the dates are right, the estate or family should talk with the provider and plan about next steps.

Should I file an appeal?

Most CO-13 problems are fixed by correcting the record and resubmitting, not by an appeal. Ask your plan which route they need.

Helpful resources

Social Security Administration
Correct a mistaken death record or find a local office.
Medicare.gov
Contact Medicare about claims and your member record.
X12 Claim Adjustment Reason Codes
The official list of adjustment codes and their exact wording.

A verse for encouragement

“Don't you be afraid, for I am with you. Don't be dismayed, for I am your God.”

— Isaiah 41:10

Scripture is offered for encouragement and reflection and is not a substitute for professional medical, legal, financial, or healthcare advice. Verses are quoted from the World English Bible, a public domain translation.

This article is educational information about how the healthcare system works. It is not medical, legal, or financial advice, and it does not describe any specific person’s case. Always confirm details with your insurer, your provider, or an official government source.