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N384 Remark Code: Body Part or Tooth Already Removed

N384 means the payer's records show that the body part or tooth referenced on the claim was already removed in a previous procedure, so a service on it now appears impossible or inconsistent.

Quick facts

Code
N384 (RARC N384)
Status
Active In use since April 1, 2007.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • CO (Contractual Obligation): The claim was denied because it conflicts with the patient's history. The provider corrects the site or proves the history is wrong; the patient is not billed.
Official description
Records indicate that the referenced body part/tooth has been removed in a previous procedure.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N384 means

Payers keep a history of procedures for each patient. If a tooth was extracted or an organ removed, services billed later for that same tooth or organ trip an edit. N384 is the remark for that conflict: according to the payer, the body part or tooth on your claim no longer exists.

It commonly accompanies CARC 261 (inconsistent with the patient’s history) or CARC 16 when the underlying problem is a data error.

Common causes

  • Wrong tooth number. Universal numbering was mixed up, or a primary tooth letter was confused with a permanent tooth number.
  • Wrong side or site. A laterality error placed the service on the side where a structure had been removed.
  • Incorrect history. Another provider billed a removal with the wrong tooth or site, and your correct claim now conflicts with it.
  • Implants or replacements. A service on an implant or prosthesis replacing the removed structure was billed as though on the natural tooth or organ.

What to do

  1. Check your chart and imaging to confirm the exact tooth or site treated.
  2. If your claim has the wrong number or side, correct it and resubmit through the payer’s corrected-claim process.
  3. If your claim is right, ask the payer which earlier procedure it matched against, and gather documentation (radiographs, operative notes) showing the structure was present.
  4. Submit a reconsideration or appeal with that documentation. If another provider’s claim is wrong, the payer may need to correct its history first.
  5. For implant or prosthetic work, make sure the procedure coding reflects the replacement, not the natural structure.

How to prevent it

Confirm tooth numbers and body sites against current charting and imaging at charge entry. For new patients, record prior extractions and removals in the history so staff can spot conflicts before billing.

Codes that may appear with N384

  • CO-261 (The procedure or service is inconsistent with the patient's history.): The procedure or service is inconsistent with the patient's history.
  • CO-16 (Claim/service lacks information or has submission/billing error(s).): Claim information is wrong, often an incorrect tooth number or body site.
  • N37 (Missing/incomplete/invalid tooth number/letter.): Used when the tooth number or letter is missing or invalid.
  • N39 (Procedure code is not compatible with tooth number/letter.): Says the procedure is not compatible with the tooth number or letter reported.
  • N849 (Missing Tooth Clause: Tooth missing prior to the member effective date.): Applies a missing tooth clause when the tooth was missing before coverage began.

N384 FAQ

Why would a payer think the tooth was removed?

Its claim history shows an extraction or removal procedure for that tooth, submitted by you or another provider.

What if the earlier removal claim was wrong?

Contact the payer with your records. The earlier claim may need to be corrected by whoever submitted it before yours can be paid.

Does N384 apply outside dentistry?

Yes. It can apply to any body part, such as an organ or limb, that the payer's records show was previously removed.