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RARC N480 · Remittance Advice Remark Code

RARC N480 Remark Code: Incomplete/invalid Explanation of Benefits (EOB)

Reviewed by QuickIntell RCM Editorial Team · Last reviewed

Updated

Not an ICD-10 code. RARC N480 is a remittance-advice remark code published by X12 and carried on the 835 LQ segment. Any ICD-10 code with the same letters and digits (e.g., ICD-10 M15 osteoarthritis, N130 other urinary tract disorders) is a separate, unrelated code set used in diagnoses on the 837. Confirm the context before acting on this page.

TL;DR

RARC N480 (X12 Incomplete/invalid Explanation of Benefits (EOB)). Commonly paired with CARC 22, CARC 23. RARC N480 flags a deficient primary-EOB attached to a secondary claim.

Official X12 description

“Incomplete/invalid Explanation of Benefits (EOB).”

Source: X12 Remittance Advice Remark Codes. X12 publishes and maintains the RARC set; always verify against the current release before building a claim workflow.

Paired CARC codes

RARC N480 almost never appears alone — it accompanies one of the CARCs below on the same 835 remittance line. Fix the CARC and the RARC typically clears; the RARC alone is informational.

Paired CARCWhat the CARC means
CARC 22This care may be covered by another payer per coordination of benefits.
CARC 23The impact of prior payer(s) adjudication including payments and/or adjustments.
CARC 24Charges are covered under a capitation agreement/managed care plan.
CARC 109Claim/service not covered by this payer/contractor. You must send the claim/service to the correct payer/contractor.

What RARC N480 actually means

RARC N480 flags a deficient primary-EOB attached to a secondary claim. Re-attach a complete EOB and rebill secondary.

Common root causes

  • Partial EOB image; missing pages or totals.

Prevention checklist

  • EOB-capture QA before secondary submission.

Resolution & appeal strategy — step by step

Because RARC N480 is supplemental to a CARC, the resolution path usually starts by fixing the underlying adjustment reason. A formal appeal of the RARC alone is rarely necessary.

  1. 1Attach complete EOB and rebill.
Sample reconsideration language referencing RARC N480
[Provider letterhead] Re: Reconsideration — Claim #{claim_number}, CARC 22 / RARC N480 Member: {member_name} · Member ID: {member_id} Date(s) of Service: {dos} The 835 remittance on {remittance_date} carried RARC N480: "Incomplete/invalid Explanation of Benefits (EOB)." We request reconsideration. The attached documentation rebuts the remark code: 1. [State the fact that rebuts the remark — authorization number, primary 835, modifier rationale, LCD citation, etc.] 2. [Reference the paired CARC and the corresponding fix] 3. [Attach the supporting document listed in step 1] Attached: {list supporting documents} Please process this line under the member's benefits. Contact the billing office at {provider_phone} for questions. Sincerely, {billing_manager_name}, {credentials}

Edit the bracketed fields before sending. Payer-specific reconsideration forms are often required — check the provider portal first.

How common is RARC N480?

Platform frequency
Pending ETL

Platform frequency ranks publish once the anonymized denial-rate pipeline reaches the publication threshold (strategy §12 Phase 2).

How QuickRCM handles RARC N480

QuickRCM reads RARC N480 alongside its paired CARC in the 835 LQ segment and routes the line to the correct worker queue with the right documentation already attached:

  • Denial routing rules tuned to the CARC+RARC pair — the paired combination tells QuickRCM which documentation the payer will accept.
  • Reconsideration template for this exact remark code pulls the supporting facts from the claim automatically.
  • Pre-submission scrubs that catch the preventable drivers surfaced on this page before the 837 leaves the clearinghouse.
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Frequently asked questions — RARC N480

What does RARC N480 mean?

RARC N480 is an X12 Remittance Advice Remark Code. The official X12 definition is: "Incomplete/invalid Explanation of Benefits (EOB)." It is supplemental to a Claim Adjustment Reason Code (CARC) on the same 835 line.

Which CARC is paired with RARC N480?

RARC N480 is most commonly paired with CARC 22, CARC 23, CARC 24, CARC 109. The CARC is the financial adjustment reason; the RARC is the informational remark. Fix the paired CARC first — the RARC usually clears with the corrected claim.

How do I resolve a RARC N480 remark on a remit?

Start from the root cause: Partial EOB image; missing pages or totals. First step: Attach complete EOB and rebill. Because RARCs are supplemental, the resolution is almost always to address the paired CARC rather than appeal the RARC alone.

Where does RARC N480 appear on the 835 ERA?

RARC N480 is carried on the 835 Loop 2110 LQ segment alongside the CARC in the CAS segment of the same service line. The code and its X12 description also print on the paper EOB in the "Remark Code" or "Remark" column next to the corresponding denial or adjustment reason.

Is RARC N480 the same as ICD-10 code N480?

No. RARC N480 is a remittance-advice remark code published by X12 and carried on the 835. Any ICD-10 code with the same letters and digits is a diagnosis code on the 837 HI segment — a completely different code set maintained by the WHO/CMS. Use the transaction context (835 = RARC; 837 = ICD-10) to disambiguate.

Disclaimer

This page is operational reference for medical-billing professionals. It is not legal, clinical, or contractual advice. X12 code descriptors are maintained by the X12 External Code Lists; always verify against the current X12 release and the payer's own published policy before submitting or appealing a claim.