PR-16: Missing Information or Billing Error
The patient is responsible for this adjustment amount. Verify the balance and collect from the patient.
What Does PR-16 Mean?
With PR (Patient Responsibility), the amount adjusted under CARC 16 is owed by the patient. The payer determined that this portion — related to missing information or billing error — falls under the patient's financial obligation per their plan benefits.
CARC 16 is used when the payer determines that missing information or billing error. The claim could not be processed as submitted because required information was absent, incomplete, or did not meet the payer's submission standards.
Common scenarios that trigger this adjustment include: incorrect date of birth, misspelled name, wrong member ID, or gender mismatch between the claim and the payer's enrollment file; Inactive NPI, missing PECOS enrollment, wrong taxonomy code, or ordering/referring provider not on file with the payer; Service required prior authorization but the auth number was not included on the claim, or the authorization expired before the date of service. The group code paired with CARC 16 determines who bears the financial responsibility — CO places it on the provider as a contractual obligation, PR shifts it to the patient, OA indicates a coordination of benefits or other payer adjustment.
Common Causes
| Cause | Frequency |
|---|---|
| Patient failed to provide current insurance information Patient did not present updated insurance card, provided expired or incorrect policy number, or failed to disclose a change in coverage | Most Common |
| Patient did not obtain required referral Patient's plan requires a referral from their PCP but the patient did not obtain one before receiving services | Common |
| Patient failed to provide accident or injury details When services are related to an accident or injury, the patient did not supply required information such as date of injury, workers' comp details, or third-party liability info | Common |
| Missing or incorrect patient demographic details Patient provided wrong date of birth, address, or other demographic information that the provider submitted as-is to the payer | Common |
How to Resolve
- Verify the adjusted amount Cross-reference the adjusted amount against the patient's benefits summary or eligibility response to confirm the adjustment amount was applied correctly per plan terms.
- Confirm plan benefit details Review the patient's specific plan structure. Confirm the correct amount was applied for this service type.
- Generate a patient statement Prepare a clear statement showing the service rendered, the allowed amount, the adjustment amount, and the balance the patient owes.
- Collect from the patient Send the statement and follow your practice's collection workflow. Offer payment plan options for substantial balances.
- Track and follow up Record payments received, update the account balance, and follow up on outstanding amounts per your collection policy.
PR-16 indicates the patient is financially responsible. Instead of appealing, collect the missing information from the patient and resubmit, or bill the patient for the denied amount. If you believe the denial should have been CO instead of PR, contact the payer directly.
Common RARC Pairings
The RARC code tells you exactly what triggered the PR-16:
| RARC | Description |
|---|---|
| MA130 | General missing/incomplete/invalid information Contact patient for missing information → |
| MA63 | Missing/invalid date of birth Verify patient DOB with patient → |
| N362 | Alert: The number of days or units of service exceeds the payer's acceptable maximum for this procedure or benefit period. Verify the number of days or units billed does not exceed the payer maximum and adjust if needed → |
How to Prevent PR-16
- Collect and verify patient insurance information at every visit, including photographing both sides of the insurance card
- Confirm referral requirements with the patient's plan before rendering services and document the referral number
- Use patient intake forms that capture accident/injury details, workers' comp information, and third-party liability data upfront
- Send pre-visit reminders asking patients to bring updated insurance cards and referral documentation
- Implement real-time eligibility verification at check-in to catch coverage changes before the visit
Also Filed As
The same CARC 16 may appear with different Group Codes:
Related Denial Codes
Sources
- https://www.mdclarity.com/denial-code/16
- https://etactics.com/blog/denial-code-co16
- https://www.medstates.com/co-16-denial-code/
- https://medsolercm.com/blog/denial-codes-co-16-denial-code
- https://denialcode.com/16
- https://droidal.com/blog/medical-billing-denial-codes/
- Codes maintained by X12. Visit x12.org for official definitions.