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N606 Remark Code: Oregon PIP Based on WC Fee Schedule

N606 means the Oregon allowed amount for this procedure comes from the Oregon Workers' Compensation Fee Schedule (OAR 436-009), calculated in accordance with Section 4 of ORS 742.524, which governs Personal Injury Protection benefits.

Quick facts

Code
N606 (RARC N606)
Status
Active In use since July 15, 2013.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • CO (Contractual Obligation): The reduction to the Oregon workers' compensation-based PIP allowance. Oregon law governs whether any balance can be collected.
Official description
The Oregon allowed amount for this procedure is based upon the Workers Compensation Fee Schedule (OAR 436-009). The allowed amount has been calculated in accordance with Section 4 of ORS 742.524.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N606 means

Oregon’s PIP statute lets auto insurers pay medical bills based on the state’s workers’ compensation fee schedule. N606 is the carrier’s statement that it did exactly that: it valued your service using OAR 436-009 and the method in ORS 742.524, Section 4.

N606 applies only to Oregon auto injury claims. It is a property and casualty remark and generally appears with CARC P23 or 45.

How to check the allowance

  1. Locate the service in the Oregon workers’ compensation medical fee schedule for the date of service.
  2. Apply the schedule’s rules on modifiers, multiple procedures, and site of service.
  3. Compare the result with the allowed amount on the remittance.
  4. Look for separate patient cost-sharing or policy-limit issues, which are reported with other codes.

If the allowance looks wrong

  • Request the carrier’s calculation, including the schedule edition it used.
  • Correct any code or modifier error through a corrected bill.
  • Dispute through the carrier and Oregon’s available remedies if you still disagree.

Staying ahead

Oregon PIP pricing ties to the workers’ comp schedule, so when that schedule is updated, your expected PIP allowances change too. Keep both in sync in your fee schedule tables. For a general approach to reading these codes, see how CARC and RARC codes work together.

Codes that may appear with N606

  • CO-P23 (Medical Payments Coverage (MPC) or Personal Injury Protection (PIP)): A PIP jurisdictional fee schedule adjustment.
  • CO-45 (Charge exceeds fee schedule/maximum allowable or contracted/legislated fee arrangement.): The charge exceeds the fee schedule or maximum allowable amount.
  • N604 (In accordance with New York No-Fault Law, Regulation 68, this base fee was calculated according to the New York Workers' Compensation Board Schedule…): New York no-fault fees also borrow a workers' compensation schedule.
  • N601 (In accordance with Hawaii Administrative Rules, Title 16, Chapter 23 Motor Vehicle Insurance Law payment is recommended based on Medicare Resource…): Hawaii's auto payment based on Medicare RBRVS.
  • N577 (Personal Injury Protection (PIP)): Identifies Personal Injury Protection coverage.

N606 FAQ

Is N606 used for Oregon workers' comp claims?

The text refers to PIP under ORS 742.524, so it describes auto PIP claims priced with the workers' compensation schedule. Oregon workers' comp claims have their own remittance codes.

Which fee schedule edition applies?

The one in effect for the date of service under the Oregon rules. Confirm the carrier used the same edition.

Can I dispute the allowance?

Yes. Ask the carrier for its calculation and use the dispute options available under Oregon PIP rules.