Appealing a Horizon Blue Cross Blue Shield of NJ CO-22 Denial
A Horizon Blue Cross Blue Shield of NJ CO-22 denial (coordination of benefits) is one of the most common claim rejections behavioral health therapists face. This guide explains exactly what caused the denial and the most effective appeal strategy for behavioral health practices.
What this denial means
The payer believes another insurer should pay first. This triggers when a patient has multiple insurance plans and the primary/secondary sequence was not established or was submitted out of order.
Your appeal strategy
Verify the patient's COB information and confirm which plan is primary. Submit the EOB from the primary payer with the secondary claim. If your payer is primary but coded the claim as secondary, provide the COB letter or member insurance card showing your payer's priority status.
What Horizon Blue Cross Blue Shield of NJ requires
P.O. Box 820
Newark, NJ 07101
30 calendar days (Level-1 appeal)
60 days from Level-1 denial
1-973-466-5210
New Jersey has strong mental-health parity law (N.J.S.A. 17:48-6e). Horizon administers BH through Magellan in some product lines — verify the correct entity before filing.
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Generate my appeal letter →Frequently asked questions
How long does Horizon Blue Cross Blue Shield of NJ have to respond to a CO-22 appeal?
Under federal regulations and most state prompt-payment laws, Horizon Blue Cross Blue Shield of NJ must respond to a Level-1 internal appeal within 30 calendar days. If you receive an adverse determination, you typically have 60 calendar days from the date of the Level-1 denial to request external review. Send the appeal via certified mail or through the payer's portal and keep documentation of the submission date.
Does MHPAEA apply to CO-22 denials?
CO-22 denials are not directly tied to mental health parity protections in most cases — this code is a general adjudication rule that applies equally to all claim types. MHPAEA may still be relevant if the underlying reason for the denial differs for mental health vs. medical/surgical services. When in doubt, include a parity argument in your appeal.
Can I appeal a CO-22 denial more than once?
Yes. Most payers, including Horizon Blue Cross Blue Shield of NJ, allow at least two levels of internal appeal (Level-1 and Level-2 or "expedited" review). After exhausting internal appeals, you have the right to request an Independent Medical Review (IMR) or external review through your state insurance commissioner. Keep copies of every appeal, submission confirmation, and payer response.
What documentation do I need to appeal a CO-22 denial from Horizon Blue Cross Blue Shield of NJ?
At minimum: the original Explanation of Benefits (EOB) or Remittance Advice (RA) showing the CO-22 denial, the original claim details (CPT code, date of service, NPI, charge amount), and any clinical documentation supporting medical necessity. Submit everything in one packet with a cover letter citing the specific denial code, the date of service, and the claim number.