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Anthem (BCBS) Behavioral Health Appeals in Colorado

Appealing an Anthem (BCBS) behavioral health denial in Colorado means tracking two separate clocks: Anthem (BCBS)'s own 30-day Level-1 appeal window, and Colorado's 30-day prompt-payment statute (C.R.S. § 10-16-106.5) for clean-claim payment. This guide covers both, plus Anthem (BCBS)'s filing address and Colorado's parity protections.

Where to file your Anthem (BCBS) appeal

Appeal Address
Anthem Blue Cross Appeals Unit
P.O. Box 60007
Los Angeles, CA 90060
Level-1 Response Window

30 calendar days

External Review Deadline

60 days from Level-1 denial

Provider Portal
File online
Fax

1-866-755-2680

Colorado's prompt-payment window

In Colorado, state-regulated (fully-insured) plans — including many Anthem (BCBS) plans — generally must pay or formally respond to a clean claim within 30 calendar days under C.R.S. § 10-16-106.5. This deadline does not bind self-funded ERISA plans. This is a claim-payment deadline, not the appeal-decision deadline. If Anthem (BCBS) missed this window on your claim, cite it as a separate payment violation alongside your Anthem (BCBS) appeal — not as the deadline for the appeal decision itself.

30 days EFT / 45 days paper. CO SB 167 (2019) added NQTL parity requirements exceeding federal MHPAEA; invoke explicitly when filing BH appeals.

MHPAEA parity for Anthem (BCBS) in Colorado

Colorado adds state-level parity protection

Colorado SB 167 (2019) added explicit NQTL parity requirements to state insurance law, requiring health plans to document that NQTLs for mental health benefits are no more restrictive than those for medical/surgical benefits. The Colorado Division of Insurance can require plans to produce comparative analyses and take enforcement action independently of federal MHPAEA enforcement.

Statute: C.R.S. § 10-16-104(5.5) (verify current section); CO SB 167 (2019) (confirm the current section before citing)

Anthem (BCBS)'s parity posture: Anthem (now Elevance Health) is a major BCBS licensee operating in ~14 states. File appeals to the state-specific Anthem entity; addresses vary by state. Behavioral health managed through Sydney Health / Anthem Behavioral Health.

When appealing an Anthem (BCBS) denial in Colorado on a state-regulated, fully-insured plan, cite both federal MHPAEA (29 CFR § 2590.712) and C.R.S. § 10-16-104(5.5) (verify current section); CO SB 167 (2019) (confirm the current section before citing) together — the state statute remains in force regardless of the 2025 federal non-enforcement of the 2024 MHPAEA Final Rule. Self-funded ERISA plans are preempted from state insurance law, so rely on federal MHPAEA alone there.

Common Anthem (BCBS) denial codes

The most common Anthem (BCBS) denial codes for behavioral health are: CO-4, CO-50, CO-97, CO-119. Each has a dedicated guide with the denial explanation and appeal strategy.

Colorado's insurance commissioner

If your internal Anthem (BCBS) appeal is denied, Colorado's Department of Insurance can help with a complaint or external review for fully-insured plans. Look up the official contact via the NAIC consumer locator.

Note: self-funded ERISA plans are generally exempt from state insurance regulation. If your patient's Anthem (BCBS) plan is employer-sponsored and self-funded, your remedies run through the U.S. Department of Labor (EBSA) rather than Colorado's commissioner.

Generate your Anthem (BCBS) appeal letter

AppealWin generates a complete, editable appeal letter with the correct regulatory citations for Colorado and Anthem (BCBS) in minutes. Therapists get 5 free letters every month; a one-time $19 patient letter is also available.

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Frequently asked questions

How long does Anthem (BCBS) have to respond to an appeal in Colorado?

Anthem (BCBS) generally has 30 calendar days to respond to a Level-1 appeal. If denied, you have 60 days to request external review. Separately, Colorado's prompt-payment statute gives payers 30 days to respond to a clean claim (C.R.S. § 10-16-106.5) — a different deadline governing claim payment, not the appeal decision.

Does MHPAEA apply to Anthem (BCBS) in Colorado?

Generally, yes — for Anthem (BCBS)'s group health plans. Federal MHPAEA applies to Anthem (BCBS)'s group health plans in Colorado. C.R.S. § 10-16-104(5.5) (verify current section); CO SB 167 (2019) (confirm the current section before citing) additionally applies for state-regulated, fully-insured plans — self-funded ERISA plans are preempted from state insurance law and rely on federal MHPAEA alone; where it applies, Colorado's state law remains in force regardless of the 2025 federal non-enforcement announcement.

Where do I mail or fax a Anthem (BCBS) appeal?

Mail to Anthem Blue Cross Appeals Unit, P.O. Box 60007, Los Angeles, CA 90060. You can also fax to 1-866-755-2680. This address is the same nationally, including for Colorado providers.