Skip to main content

N794 Remark Code: Payment Adjusted for Technology Type

N794 means the payer adjusted payment for the service based on the type of technology or equipment used to perform it. It explains a reduction rather than a denial, and the details depend on the payer's policy.

Quick facts

Code
N794 (RARC N794)
Status
Active In use since July 1, 2017.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • CO (Contractual Obligation): The reduction is a provider write-off under the payer's pricing rules and is not billable to the patient.
Official description
Payment adjusted based on type of technology used.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N794 means

Some payment rules depend not on what service was performed but on how. When a payer pays differently for the same service depending on the equipment or technology behind it, N794 is the remark that tells you that rule was applied to your line.

The best-known examples come from Medicare imaging policy, which reduces payment for certain services performed with older equipment and uses modifiers to identify them: FX for X-rays taken using film, FY for X-rays taken with computed radiography, and CT for CT scans on equipment that does not meet a specified dose standard. Other payers may have their own technology-based rules. Medicare pairs N794 with CARC 237 (legislated/regulatory penalty) for the computed radiography reduction; other payers may use a different reason code, such as CARC 45.

Common causes

  • A technology modifier was reported, correctly or by mistake, and triggered a reduced rate.
  • The equipment really is older technology subject to a payer or regulatory reduction.
  • Default charge-master settings add a modifier to every line from a certain room or device, including ones that shouldn’t carry it.
  • A payer policy change took effect for the date of service.

What to do

  1. Look at the modifiers on the line. Confirm whether a technology modifier was billed and whether it describes the equipment actually used.
  2. Check your equipment records for the device used on the date of service.
  3. If the modifier was wrong, submit a corrected claim with resubmission code 7 in box 22 and the right modifiers in box 24D.
  4. If the modifier was right, post the reduction as a contractual adjustment.
  5. If you think the payer misapplied its policy, contact provider services and ask for the policy reference, then request reprocessing or file a reconsideration.

How to prevent it

  • Review device-driven modifier rules in your charge master whenever equipment is replaced.
  • Keep an inventory of imaging and diagnostic equipment with the standards each unit meets.
  • Watch for N794 in ERA Analyzer trends. A sudden rise usually points to a configuration change, not a policy one.

Codes that may appear with N794

  • CO-45 (Charge exceeds fee schedule/maximum allowable or contracted/legislated fee arrangement.): The allowed amount was reduced under the payer's fee schedule or a legislated fee arrangement.
  • CO-237 (Legislated/Regulatory Penalty.): A legislated or regulatory payment penalty, which some technology-based reductions are.
  • N13 (Payment based on professional/technical component modifier(s).): Payment based on professional or technical component modifiers, another way the service's structure changes the rate.
  • N701 (Payment adjusted based on the Value-based Payment Modifier.): A payment adjustment tied to a value-based modifier rather than the equipment used.
  • N807 (Payment adjustment based on the Merit-based Incentive Payment System (MIPS).): A Medicare adjustment driven by the clinician's MIPS performance, not the technology.

N794 FAQ

Is N794 a denial?

No. It explains why the payment is lower than expected. The service was processed and paid at an adjusted amount.

Can I appeal an N794 reduction?

If the payer applied a technology reduction in error, for example because a modifier was reported incorrectly or the equipment actually meets the standard, correct the claim or ask for reprocessing. A correctly applied policy reduction is generally not overturned on appeal.

Where do I find the payer's technology rules?

In the payer's fee schedule notes, payment policies, or provider manual for the service type. Ask provider services if the policy isn't obvious.