N502 Remark Code: Vocational Report Incomplete
N502 means the carrier received a vocational report but could not accept it. It may not cover the dates or services billed, may lack required content such as the return-to-work plan, may be unsigned, or may not match the carrier's referral.
Quick facts
- Code
- N502 (RARC N502)
- Status
- Active In use since July 1, 2008.
- Code set
- Remittance Advice Remark Codes (RARC)
- Group codes
-
- CO (Contractual Obligation): The vocational provider must correct the report. The injured worker is not responsible for the adjustment.
- Official description
Incomplete/invalid Vocational Report.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026- Last verified
- against the official X12 list.
What N502 means
The vocational report is in the carrier’s file, but it did not justify payment. Where N501 means the report never arrived, N502 means it arrived and failed review. Carriers pay vocational providers for authorized activities, so the report has to line up with the referral, the dates, and the time or services billed.
Common deficiencies
- Coverage gap. The report describes a different period than the bill.
- Activities not documented. The bill lists services such as testing, job analysis, or placement contacts that the report does not describe.
- Missing plan elements. No return-to-work goal, retraining plan, or labor market findings where the referral asked for them.
- Outside the referral. Services went beyond what the carrier authorized.
- Administrative problems. No signature, credentials, or claim number.
How to fix it
- Get the specific objection from the carrier’s explanation of review or the adjuster.
- Amend the report to document the activities, dates, and findings that support the bill.
- Correct the bill instead if it overstated time or listed services that were not performed.
- Resubmit the amended report and bill together, labeled as corrected.
- Dispute through the jurisdiction’s process if the carrier’s objection is inconsistent with the referral or state rules.
How to prevent it
Write vocational reports against the referral: address every question the carrier asked and log each billed activity with its date and time. A quick reconciliation of report to bill before submission prevents most N502 rejections.
Codes that may appear with N502
- CO-251 (The attachment/other documentation that was received was incomplete or deficient.): The report was received but was deficient.
- CO-16 (Claim/service lacks information or has submission/billing error(s).): The bill or its support contained missing or invalid information.
- CO-P13 (Payment reduced or denied based on workers' compensation jurisdictional regulations or payment policies, use only if no other code is applicable.): The reduction or denial is based on workers' compensation jurisdictional rules.
Related and easily confused codes
- N501 (Missing Vocational Report.): No vocational report was received.
- N504 (Incomplete/invalid Work Status Report.): The work status report is incomplete or invalid instead.
- N206 (The supporting documentation does not match the information sent on the claim.): Supporting documentation does not match the bill.
N502 FAQ
Why would a vocational report not support the bill?
The carrier compares the report to the services and time billed. If the report does not describe the activities billed, covers a different period, or goes beyond what the referral authorized, the bill may be reduced or denied.
Can the adjuster tell me what is missing?
Usually yes. Ask the adjuster or bill reviewer for the specific deficiency before revising the report.
Is N502 used by health plans?
It is intended for workers' compensation and similar injury claims. Group health plans do not generally pay for vocational rehabilitation services.