CARC Code
284
Authorization Doesn't Match Billed Services
The authorization number on the claim is real and active, but it was issued for different services than what was actually billed. The authorization and the services don't match up.
authorizationHow to resolve this denial
▶✓ Pre-action checklist — verify before contacting the payer
Review the full remittance advice (ERA/EOB) for additional RARC codes that explain the denial.
Verify the claim was submitted with correct patient eligibility and benefit information.
Check if this denial applies to a specific line item or the entire claim.
▶More about CO-284 — stats, related codes, appeal template
60%
Recovery Rate
7-21 days
Avg. Resolution
Medium
Difficulty
Rare
Frequency
Payer-Specific Notes
How major payers handle CARC 284 by specialty.
General
Confirm payer-specific policy for CARC 284 and submit corrected claim or appeal as appropriate.
Common 835 Combinations
CARC 284 most often appears with these Group Code + RARC combinations on 835 remittances.
Appeal Letter Template
Generic appeal template for CARC 284 denials.
Dear [Payer Name] Appeals Department, We are writing to appeal the denial of claim [CLAIM #] for patient [PATIENT NAME] (Member ID: [ID]) for services rendered on [DATE OF SERVICE]. The claim was denied with CARC 284: "Precertification/authorization/notification/pre-treatment number may be valid but does not apply to the billed services or the billed provider." We believe this denial is in error for the following reasons: [INSERT CLINICAL/ADMINISTRATIVE JUSTIFICATION] We respectfully request reconsideration and payment of this claim. Sincerely, [Provider Name / Billing Contact]
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