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N703 Remark Code: Conflicts With Other Claims on File

N703 means the billed service is incompatible with another claim that has been processed or is in process for the patient. The two can't both be right, for example because of overlapping dates, conflicting settings, or services that can't be performed together.

Code: N703 (RARC N703)
Status: Active In use since March 1, 2014.
Code set: Remittance Advice Remark Codes (RARC)
Group codes: CO (Contractual Obligation): The line is denied because of the conflict with another claim. It is typically the provider's responsibility, not the patient's.
Official description: This service is incompatible with previously adjudicated claims or claims in process.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified: September 24, 2026 against the official X12 list.

What N703 means

Where N702 is about repetition, N703 is about contradiction. The payer found another claim for the patient that can’t coexist with yours as billed. Perhaps the patient is recorded as an inpatient at a hospital on the day you billed an office service, or another provider billed a service that’s mutually exclusive with yours, or the settings or dates overlap in a way that doesn’t make sense.

The payer won’t pay both, so it denies the claim that came second or that its rules consider inconsistent.

Common causes

Inpatient overlap: your outpatient or professional service fell within another facility’s inpatient dates, where the payer expects the facility to bill it or requires a different setting.
Home health or hospice overlap: services billed separately during an episode or election that covers them.
Wrong date of service on either claim.
Wrong patient: a claim filed under the wrong member created a false conflict.
Mutually exclusive services billed by two different providers.

How to fix it

Ask the payer what claim conflicts with yours: the type of service, dates, and setting.
Verify your claim details: the date in box 24A, place of service in box 24B, and patient identifiers.
Correct your claim with resubmission code 7 in box 22 if you find an error.
Coordinate with the other provider if its claim is wrong, or send the facility the information it needs to bill the service under arrangement, where that applies.
Appeal with documentation if both services were legitimately provided as billed.

How to prevent it

Ask patients about recent hospital stays, home health, or hospice care at scheduling. Checking eligibility responses for active episodes before the visit catches many of these conflicts before the claim is sent.

Codes that may appear with N703

CO-236 (This procedure or procedure/modifier combination is not compatible with another procedure or procedure/modifier combination provided on the same day…): The procedure or procedure-modifier combination is not compatible with another procedure.
CO-231 (Mutually exclusive procedures cannot be done in the same day/setting.): Mutually exclusive procedures can't be done in the same day or setting.
CO-97 (The benefit for this service is included in the payment/allowance for another service/procedure that has already been adjudicated.): The service is included in the payment for another service already adjudicated.

N702 (Decision based on review of previously adjudicated claims or for claims in process for the same/similar type of services.): The decision was based on other claims for the same or similar services, a repeat rather than a conflict.
CO-5 (The procedure code/type of bill is inconsistent with the place of service.): The procedure code or type of bill is inconsistent with the place of service.
CO-60 (Charges for outpatient services are not covered when performed within a period of time prior to or after inpatient services.): Outpatient services are not covered within a period before or after an inpatient stay.

N703 FAQ

What kind of conflicts trigger N703?

Examples include an outpatient service billed while the patient was an inpatient elsewhere, a service billed after a date of death on another claim, or services that are mutually exclusive with another provider's claim.

Which claim is wrong, mine or the other one?

Either could be. Compare dates, place of service, and patient details. If your claim is correct, the payer may need the other provider's claim corrected before it can pay yours.

Should I resubmit?

Only after correcting something on your claim. If your claim is accurate, request a review instead.

Important: read before using this information

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