CARC B16 Active

OA-B16: New Patient Qualifications Not Met

TL;DR

The patient does not qualify as a new patient — they were seen by the same physician or same specialty in the same group within 3 years. Rebill with the correct established patient E/M code or appeal if the patient truly meets new patient criteria.

Action
Review & Decide
Who Pays
Depends
Appeal
No
Patient Impact
Indirect
Disclaimer
This content is for informational purposes only and does not constitute professional billing advice. Always verify information against your payer contracts and current coding guidelines. Consult a certified billing specialist for specific claim issues.

What Does OA-B16 Mean?

CARC B16 indicates the payer denied the new patient E/M code because the patient does not meet the qualification for new patient status. Per CMS guidelines, a new patient is one who has not received professional services from the same physician or a physician of the same specialty in the same group practice within the previous 3 years.

The most common cause is simply using a new patient E/M code (99202-99205) when the patient is established (should use 99211-99215). This happens when scheduling staff assign new patient status without checking the practice's visit history, when the payer's claims data shows a prior visit within 3 years, or when another physician of the same specialty in the same group already saw the patient.

The resolution is straightforward: recode the visit with the appropriate established patient E/M code and resubmit. If the patient genuinely meets new patient criteria (different specialty, different group, or no visit within 3 years), appeal with documentation proving the qualification.

How to Resolve

Verify the patient's visit history, recode with the established patient E/M code if needed, or appeal if new patient status is correct.

  1. Check visit history Review your practice management system and payer claims data for prior visits within 3 years by the same physician or same specialty in the same group.
  2. Recode if established If the patient was seen within 3 years, change the new patient E/M code to the appropriate established patient E/M code and resubmit.
  3. Appeal if truly new If the patient meets new patient criteria (no visit within 3 years, different specialty, or different group), appeal with documentation including visit history and specialty differentiation.
  4. Update scheduling workflows Correct any workflow issues that caused the incorrect new patient designation.
Do Not Appeal This Code

New Patient Qualifications Not Met grouped under OA is an Other Adjustment that doesn't fall into the standard contractual write-off or patient responsibility categories. Whether action is needed depends on the specific reason — review any accompanying RARC codes and payer guidance to decide whether this is a final adjustment to accept or an issue to resolve through resubmission.

Also Filed As

The same CARC B16 may appear with different Group Codes:

CO-B16 PR-B16

Related Denial Codes

OA-74 — Indirect Medical Education Adjustment OA-75 — Direct Medical Education Adjustment OA-76 — Disproportionate Share Adjustment OA-85 — Patient Interest Adjustment OA-89 — Professional Fees Removed from Charges

Sources

  1. https://x12.org/codes/claim-adjustment-reason-codes
  2. https://www.cms.gov/regulations-and-guidance/guidance/manuals
  3. Codes maintained by X12. Visit x12.org for official definitions.