Arizona medical billing and payer rules

Timely filing in Arizona medical billing and payer rules

Arizona medical billing and payer rules surprise billing vs the federal NSA

Major payers

How does AHCCCS (Arizona Medicaid) billing work?

Arizona's Medicaid program is the Arizona Health Care Cost Containment System, called AHCCCS (pronounced "access"). Per its Fee-For-Service Provider Billing Manual, AHCCCS pays providers in two ways: a monthly capitation payment to a health plan that pays you, or a fee-for-service payment from AHCCCS itself for members not enrolled with a plan.

That split decides where the claim goes. Fee-for-service members include the American Indian Health Program, Tribal ALTCS and Hospital Presumptive Eligibility members. Everyone else is with a plan, billed under that plan's manual.

Fee-for-service claims go to AHCCCS directly. It accepts HIPAA 837 electronic claims from certified submitters, claims keyed in the AHCCCS Online portal, and paper claims mailed to AHCCCS Claims, P.O. Box 1700, Phoenix, AZ 85001. A returned paper claim must be resubmitted on a new red claim form, not a black and white copy.

A provider must be an active registered AHCCCS provider to be paid by AHCCCS or by any plan. The AHCCCS Provider Enrollment Portal (APEP) is the enrollment entry point. Our Medicaid payer guide covers the national picture.

One rule catches billing offices. A.R.S. 36-2903.01(K), quoted in the manual, bars billing AHCCCS members, including QMB Only members, for AHCCCS-covered services. For QMB Only the manual says AHCCCS pays only the Medicare deductible and coinsurance when Medicare pays first (A.A.C. R9-29-301).

Which AHCCCS Complete Care plans pay Arizona claims?

Most members are in an AHCCCS Complete Care (ACC) plan, which covers physical and behavioral health together. The FFS manual says AHCCCS integrated the two for most members on October 1, 2018.

The AHCCCS Available Health Plans list (revised October 7, 2024) names six ACC plans: Arizona Complete Health Complete Care Plan, Banner-University Family Care, Molina Healthcare, Mercy Care, Health Choice Arizona and UnitedHealthcare Community Plan. Counties differ by plan, and plans change, so check the current list before building a payer table.

The same list shows ALTCS plans (the Arizona Long Term Care System), ACC-RBHA behavioral health plans and tribal contractors. The manual says it covers fee-for-service only and is "not intended as a substitute or a replacement for a health plan's or a program contractor's billing manual." Each plan sets its own portal, prior authorization and appeal steps.

What is the AHCCCS timely filing limit?

An initial AHCCCS claim must be received within 6 months of the date of service, and it must reach clean claim status within 12 months. Both limits come from A.R.S. 36-2904(G), and FFS manual Chapter 4 (revised September 10, 2024) repeats them.

The statute applies them to contractors too: contractors "shall not pay claims for system covered services that are initially submitted more than six months after the date of the service" or submitted as clean claims more than twelve months after it. We still read each plan's contract before relying on any longer window.

Claims first received after 6 months, other than retro-eligibility claims, will be denied, the manual says, and a claim that is not clean or correctly adjusted within 12 months leaves AHCCCS not liable. "Submitted" means the day AHCCCS or the plan receives it, shown by a date stamp or other record, so keep the clearinghouse acceptance report.

How do I correct or dispute a denied AHCCCS claim?

Replace the claim, do not send a new one. A replacement must carry the original AHCCCS Claim Reference Number (CRN), or the system treats it as new and it can deny as timely filing exceeded or as a duplicate.

On facility claims, UB-04 field 14 (Admit Type) must be 1 (emergency), 5 (trauma) or 4 (newborn) on emergency claims, and the manual says all other admit types, including 2 for urgent, mark the claim non-emergent. We check this before release in hospital and facility billing.

If processing steps fail, file a claim dispute with the AHCCCS Office of Administrative Legal Services (OALS). Chapter 28 sets the deadline at 12 months from the ending date of service, eligibility posting or discharge date, or 60 days after the denial of a timely claim, whichever is later. If AHCCCS acts on a timely clean claim in the last 60 days of that window or after it, you get 60 days from the adverse action date on the remittance advice.

The dispute must be in writing and state the factual and legal basis and the relief sought. A state fair hearing request after a Notice of Decision is due in writing within 30 days of receipt.

Who is the Medicare MAC for Arizona?

Noridian Healthcare Solutions, LLC is the Medicare Administrative Contractor (MAC) for Arizona Part A and Part B claims, in Jurisdiction F (JF). CMS's list of MACs by state puts Alaska, Arizona, Idaho, Montana, North Dakota, Oregon, South Dakota, Utah, Washington and Wyoming in JF.

The same list (dated March 2023) places Arizona in DME Jurisdiction D, also Noridian, and shows home health and hospice claims with National Government Services in Jurisdiction 6.

Under 42 CFR 424.44(a)(1), a Medicare claim must be filed no later than the close of the period ending 1 calendar year after the date of service. Noridian offers a free Noridian Medicare Portal (NMP) for Part A, Part B and DME users in JF, and its JF Part B contact page gives 877-908-8431. Our Medicare payer guide covers the national rules.

What is Arizona's prompt pay rule for insurers?

A health care insurer must adjudicate a clean claim within 30 days after receiving it, or within the contract period, under A.R.S. 20-3102(A). Without a written contract term, it must pay the approved portion within 30 days after adjudication, and late payment carries interest at the "legal rate" from the due date.

If the claim is not clean, the insurer must send a written request for more information within 30 days, state every reason for the delay, and adjudicate within 30 days of receiving everything. It may not delay a clean claim without reasonable justification, ask for unrelated information, or ask you to resend what you can document you already sent.

Also, neither side may adjust a paid or denied claim more than one year later except in fraud (20-3102(J)),. A.R.S. 20-3101 defines a clean claim as one processed without further information, including coordination of benefits information. The statute sets no separate paper and electronic deadlines; claims in a surprise bill arbitration are outside it (20-3102(N)).

Does Arizona have its own surprise billing law?

Yes. A.R.S. 20-3111 through 20-3119 sets a patient-started arbitration program for surprise out-of-network bills, run by the Department of Insurance and Financial Institutions (DIFI) as the Surprise Out of Network Billing Dispute Resolution (SOONBDR) program. DIFI also cites Arizona Administrative Code R20-6-2401 to R20-6-2406.

A surprise bill is a bill from a non-contracted provider for care in a network facility. Under 20-3113 it qualifies if it is for emergency services, including related inpatient care, or for non-emergency care where the provider gave no written, dated disclosure naming it as out of network with an estimated cost, or the enrollee declined to sign one. A signed disclosure can waive the right to dispute only while the bill stays within the estimate (20-3114(C)).

Section 20-3112 excludes uncovered services, limited benefit coverage, state employee coverage, plans without out-of-network coverage and self-funded plans that ERISA (ERISA) preempts. DIFI also lists HMO plans among common ineligible bills, saying they carry other balance billing protections.

Only the enrollee can start it, within one year of the date of service (paused during a health care appeal), and the amount owed after cost sharing and the insurer's allowable must be at least $1,000 (20-3114(A)).

Insurer and provider must both take part, and a side that does not pays the whole arbitration cost; otherwise they split it and the enrollee pays none (20-3115(F), (T)). After resolution the provider, directly or through its billing company, may not send a further balance bill (20-3115(S)). A provider that hears from an enrollee must give DIFI's written notice unless the claim is subject to federal IDR (20-3117(C)).

Do I use the Arizona process, open negotiation or federal IDR?

For a dispute over what a plan paid you, start from the federal process. CMS wrote to Arizona officials on February 23, 2022 that A.R.S. 20-3111 to 20-3119 "is not a specified state law because it requires an enrollee who has received a surprise out-of-network bill and who disputes the amount of the bill to initiate dispute resolution."

The letter says federal independent dispute resolution applies in Arizona to insured group and individual coverage for plan years from January 1, 2022. Arizona is also not among the six states CMS lists as letting self-insured plans opt in to a state law. We read no CMS update after this 2022 letter.

For a hospital or emergency group the working order is the federal one: eligibility and plan type, the initial payment dispute, open negotiation, then federal IDR. The Arizona program is the patient's route, which is why the statute makes providers give the notice. Our out-of-network billing and IDR service confirms the pathway on each claim, and the state surprise billing laws page compares states.

How do I file a complaint with Arizona DIFI?

Use DIFI's online Consumer Complaint system. For a surprise bill, DIFI says the enrollee completes and signs Form SOONBDR and attaches the bills, both sides of the insurance card and the explanation of benefits in one upload, because the system allows a single attempt. If documents were missed, write to soonbdr@difi.az.gov with the complaint number instead of filing again.

DIFI does not adjudicate individual claims between insurers and providers (A.R.S. 20-3102(H)). A provider's slow-payment complaint starts in the insurer's internal grievance system, whose records the director may review.

Which payers matter for an Arizona hospital or ER group?

Every Arizona facility meets the same layers: Medicare under Noridian JF, Medicare Advantage plans, AHCCCS fee-for-service, ACC and ALTCS plans, and commercial and self-funded coverage. This page cites no Arizona carrier market share table, so no commercial carriers are named. Neighbours follow different rules: see Nevada, California and Utah.

How we handle billing in Arizona

For Arizona clients we sort every claim on day one into Medicare under Noridian JF, AHCCCS fee-for-service, an AHCCCS plan, fully insured commercial, or self-funded. That sets the filing clock (6 and 12 months for AHCCCS, 12 months for Medicare) and, for out-of-network claims, the dispute route.

Claims go out within 24 hours of charge entry and denials are worked within 48 hours. We carry the AHCCCS dates on the account and replace denied claims with the original CRN in the right field. To talk through your Arizona payer mix, book a call.