Who can deliver ABA under AHCCCS?

AMPM 320-S makes Behavior Analysis Services a covered benefit for autism spectrum disorder and for other diagnoses where medical necessity is established. Services must be directed and overseen by a Behavior Analyst licensed under A.R.S. §32-2091, and may be supported by Behavior Analysis Trainees and Behavior Technicians working under the supervision standards that licence carries.

Is prior authorization required?

Yes. AHCCCS requires prior authorization for behavior analysis services, with limits on the amount covered within a benefit year. Authorization is held per member, so remaining units — not just an approval on file — are what determines whether the next session is billable.

Does EVV apply to ABA in Arizona?

It depends on the service category you bill under, which is the single most common point of confusion. AHCCCS mandates EVV for non-skilled in-home services — attendant care, personal care, homemaker, habilitation and respite — and for in-home skilled nursing. In-home ABA billed as habilitation is therefore in scope; clinic-based ABA is not. Confirm the category your programme bills under before assuming either way.

Which EVV system must I use?

Arizona runs an Open Vendor Model. Sandata Technologies is the statewide contractor and operates the AHCCCS aggregator, but providers may keep an existing EVV system or choose an alternate vendor — provided that vendor transmits visit data to the Sandata aggregator. Claims validate against what reaches the aggregator, so a visit missing from it does not get paid.

Built by operators who ran ABA practices.

All-in-one ABA software for Arizona practices.

Q: Does Wilma support AHCCCS billing?

Yes. Wilma bills the ABA-specific CPT® and HCPCS codes Arizona plans use, applies Arizona’s payer modifier rules per claim, tracks authorization units, and submits through a built-in EDI clearinghouse with ERA posting. Insurance is captured at intake and kept on the client record. Wilma applies Arizona’s billing rules; it does not run payer eligibility checks.

Q: How much does ABA software cost in Arizona?

Wilma is a flat $30/user/month for the full platform — the same published price everywhere, with no per-client fees and no Arizona-specific surcharge. Core has a 10-licence minimum, so accounts start at $300/month. Optional add-ons: AI (+$20/user/month) for note drafting and claim scrubbing, and Phone (+$10/user/month) for a shared practice line. Annual prepay saves about 17%.

Q: Is Wilma a fit for a solo BCBA in Arizona?

No. Wilma has a 10-licence minimum, so Core starts at $300/month — it is built for a practice running a team, not for a single practitioner. In ABA your RBTs are users too, so a real agency is usually 1 BCBA + 4-8 RBTs + a biller and passes 10 people quickly; if you are there or close, Wilma fits and you will not replatform as you grow. If you are genuinely a one-person practice today, a lighter tool will serve you better until you start hiring. Small practices in Arizona typically go live in under a week, with migration included.

Q: Does Wilma work for multi-site Arizona practices?

Yes. Multi-entity billing with NPI, tax ID, and billing address per location, plus SSO and role-based access at scale — all on one data model. You can run several Arizona locations without replatforming as you grow.

AHCCCS billing, native EVV, real-time data collection, and session notes — every workflow on one record. From $300/month — $30/user/month, 10-licence minimum. Live in 1–2 weeks.

built for Arizona practices
EVV + Medicaid rule packs: Native
per user / month, flat: $30
weeks to go live: 1–2

The short answer

How do you bill AHCCCS for ABA in Arizona?

Arizona covers ABA under Arizona Health Care Cost Containment System (AHCCCS), governed by AMPM 320-S — Behavior Analysis Services. Services are directed by a licensed Behavior Analyst, prior authorization is required with benefit-year limits, and where the service falls under Electronic Visit Verification the visit data must reach the state aggregator before the claim will pay.

Verified against Arizona Health Care Cost Containment System (AHCCCS) primary sources on 2026-09-08. State rules change — check the sources below before relying on any of it for a claim.

ABA Medicaid billing in Arizona: the rules that actually bite

The CPT codes are national. Everything wrapped around them — who may deliver the service, what has to be authorised first, and whether the visit needs verifying electronically — is set by AHCCCS. This is what Arizona requires.

Who can deliver ABA under AHCCCS?: AMPM 320-S makes Behavior Analysis Services a covered benefit for autism spectrum disorder and for other diagnoses where medical necessity is established. Services must be directed and overseen by a Behavior Analyst licensed under A.R.S. §32-2091, and may be supported by Behavior Analysis Trainees and Behavior Technicians working under the supervision standards that licence carries.
Is prior authorization required?: Yes. AHCCCS requires prior authorization for behavior analysis services, with limits on the amount covered within a benefit year. Authorization is held per member, so remaining units — not just an approval on file — are what determines whether the next session is billable.
Does EVV apply to ABA in Arizona?: It depends on the service category you bill under, which is the single most common point of confusion. AHCCCS mandates EVV for non-skilled in-home services — attendant care, personal care, homemaker, habilitation and respite — and for in-home skilled nursing. In-home ABA billed as habilitation is therefore in scope; clinic-based ABA is not. Confirm the category your programme bills under before assuming either way.
Which EVV system must I use?: Arizona runs an Open Vendor Model. Sandata Technologies is the statewide contractor and operates the AHCCCS aggregator, but providers may keep an existing EVV system or choose an alternate vendor — provided that vendor transmits visit data to the Sandata aggregator. Claims validate against what reaches the aggregator, so a visit missing from it does not get paid.

Sources — checked 2026-09-08

AHCCCS Medical Policy Manual 320-S — Behavior Analysis Services
AHCCCS FFS Provider Manual, Chapter 19 — Behavioral Health Services
AHCCCS Electronic Visit Verification programme

Published as a starting point, not as billing advice. AHCCCS policy is revised regularly and plan-level rules vary — confirm against the current source before you bill.

ABA software in Arizona

Made for how Arizona practices bill and deliver ABA.

Running an ABA practice in Arizona means billing AHCCCS and commercial payers under their specific code and modifier rules, and — where your services fall under it — meeting Arizona's Electronic Visit Verification requirements. Wilma® is all-in-one ABA software that handles both natively: state payer rule packs and native EVV on the same record as your data collection, session notes, scheduling, and parent portal — so a booked session becomes a verified visit and a clean claim without re-keying or a separate portal.

Bill AHCCCS without the busywork.

Wilma bills ABA-specific CPT® and HCPCS codes with the payer-specific modifier rules Arizona plans require, tracks authorization units live, and scrubs claims before they ship — so Arizona Medicaid and commercial claims go out clean the first time.

Payer rule packs

Arizona modifier and code rules applied per claim.

Auth tracking

Units decrement per session; renewals surface early.

EDI + ERA

Clearinghouse built in; ERAs auto-post to claims.

Intake capture

Insurance captured at intake, on the record.

EVV compliance, where Arizona requires it.

Where your Arizona Medicaid services fall under Electronic Visit Verification, Wilma captures the visit natively — time- and location-stamped, geofenced where required, and aligned to your state's EVV program — so verified visits feed billing with nothing to reconcile in a separate portal.

Native EVV

Captured on the schedule, not a bolt-on app.

Aggregator-ready

Built to align with Arizona's EVV program.

Geofenced

Clock-in/out verification where required.

Verified → billed

A verified visit is a billable visit.

Every workflow your Arizona practice runs, on one record.

Data collection, scheduling, session notes, billing, EVV, a parent portal, supervision, and compliance on one database — so Arizona clinicians capture data once and it flows into the note and the claim without re-keying.

Data → notes

AI drafts the note; the BCBA reviews and signs.

One login

No pile of disconnected tools to reconcile.

Parent portal

Branded, on the same record as care.

Supervision

BACB ratios and credential expirations tracked.

Priced flat — from a single clinic to a multi-site Arizona group.

Wilma is $30/user/month with a 10-licence minimum, so a Arizona practice starts at $300/month for the full platform — no per-client fees, so your cost doesn't balloon as your caseload grows. Multi-site groups get multi-entity billing with NPI per location and SSO on the same data model.

Flat pricing

Published $30/user/month, 10-licence minimum. No per-client fees.

Multi-entity

NPI, tax ID, and billing per location.

Live in 1–2 weeks

Migration included in onboarding.

No replatforming

Same platform as you grow in-state.

Buyer's Checklist

Evaluating ABA software in Arizona? Demand every line.

Go deeper on the pieces that matter in Arizona:

FAQ

ABA software in Arizona — questions, answered.

Does Wilma support AHCCCS billing?

Is Wilma Arizona EVV compliant?

How much does ABA software cost in Arizona?

Is Wilma a fit for a solo BCBA in Arizona?

Does Wilma work for multi-site Arizona practices?

How long does it take to switch in Arizona?

Is Wilma HIPAA compliant?

See Wilma® run a Arizona practice, end to end.

Thirty minutes. Bring your Arizona payer mix and EVV requirements — we'll show a booked session become a verified visit and a clean claim on one record.

Keep reading

Related guides on running an ABA practice — the same operation, from a different angle.