The payer did not deny the claim. It handed the claim to the entity that actually processes chiropractic benefits for that plan, and payment or denial will come from there.
Many commercial plans carve chiropractic out to a benefits manager such as ASH. The claim you sent the main payer gets auto forwarded, and the B11 on the remittance confuses billers into rebilling, which creates duplicates at the carve out. The money conversation is now with the carve out entity, not the payer you billed.
A commercial plan carves chiropractic out to a benefits manager. The office bills the main payer, which forwards the claim and reports B11. The biller, reading it as a denial, rebills the main payer twice more, creating two more forwarded copies. Meanwhile the carve out manager has been holding the original for a records request nobody saw.
Cervica recognizes B11 as a forwarded claim and holds it instead of queueing a rebill, tracking it against the carve out’s eventual response so it cannot silently vanish between two payers.
General information for billing teams, not legal or payer specific advice. CARC definitions belong to X12; payer policies vary and control. Verify against the payer contract before acting on any individual claim.