Missouri runs statewide Medicaid managed care — Healthy Blue, Home State Health, UnitedHealthcare, and the Show Me Healthy Kids specialty plan — but for ABA, none of that matters: the benefit is fully carved out of managed care, and every MO HealthNet member receives ABA on a fee-for-service basis directly from the state. The Behavioral Health Services Manual says it plainly, and the plans' own manuals confirm it. For an ABA practice, MO HealthNet is effectively a single-payer state: one precertification pathway (a form faxed to the state help desk — no UM vendor, no portal), one fee schedule, and zero MCO contracting or credentialing for ABA. The whole intake playbook below is about working that one pathway well.
The Behavioral Health Services Manual states that participants enrolled in a MO HealthNet Managed Care health plan receive ABA services on a FFS basis, outside the managed-care benefit package — and the plans corroborate it in their own documents. Healthy Blue's provider manual lists ABA among services "reimbursed by the state agency on a fee-for-service basis," and the Show Me Healthy Kids manual's benefit grid routes ABA to "MO HealthNet Fee For Service." So whichever card a family shows — Healthy Blue, Home State Health, UnitedHealthcare Community Plan, or Show Me Healthy Kids (the statewide specialty plan for foster-care and adoption-subsidy children, a population with elevated behavioral needs) — the ABA answer is identical: state FFS, state precert, state fee schedule. MCO case managers are a referral source, not a payer; note that OT/PT/speech remain plan-covered with the MCO, which makes multi-service kids a coordination point, not a contracting one. The state's own MO HealthNet Managed Care Policy Statements (revised 7/2023 — confirmed as of this review still the current edition; no newer version was found) directly corroborates the carve-out: it lists ABA among services managed-care plans are not required to provide, states ABA is covered "when provided by MO HealthNet enrolled providers" (i.e., FFS), and confirms "All ABA services require precertification."[2][18][6][7]
All ABA services require precertification — the manual's sole exception is school-based ABA delivered under an IEP. The mechanics are refreshingly analog: complete the "Applied Behavior Analysis Request for Precertification" form (form 2575-045) and fax it to the MHD Behavioral Health Services help desk at (573) 635-6516. The state reviews in-house and faxes back the approved hours and the precert start and end dates. The initial "ABA Assessment for Intervention Planning" precert requires the diagnostic evaluation attached; the initial intervention precert requires that assessment plus the intervention plan; and continued intervention requires the current plan, progress data and graphs, and — where progress isn't evident — identified barriers and strategies. Intervention may be precertified for up to six months from the start date, with a new precert required to continue beyond it.[2][4][5]
Eligibility is diagnosis-flexible in a way intake teams should not miss: the standard benefit requires a participant under 21 with a diagnostic evaluation by a licensed physician or licensed psychologist producing an ASD diagnosis (precertifiable ICD-10 codes F84.0, F84.3, F84.5, F84.8) and recommending ABA as medically necessary — with evaluations expected to follow the Missouri Autism Guidelines Initiative's best-practice guidelines. But under the Healthy Children and Youth (EPSDT) program, ABA is also covered for participants under 21 with other diagnoses when medically necessary. An autism diagnosis is not an absolute gate — don't turn a non-ASD family away before the EPSDT analysis.[2][4][5]
Missouri pays by rendering-practitioner tier, flagged with modifiers: HO = behavior analyst or psychologist, HN = assistant behavior analyst, HM = behavior technician/RBT (billed by the licensed supervisor), U8 = home or other place of service, TM = school-based IEP direct services (billed by the school district, not telemedicine). Per 15-minute unit from the official fee schedule: 97151 assessment pays $25.26 (max 32 units); 97153 direct treatment pays $20.13 at both the HO and HN tiers but $16.37 with the HM technician modifier (raised effective 7/1/2024 from $17.73; max 32 units — 8 hours/day); 97155 pays $25.26 HO ($27.46 with U8 in-home, $17.73 HN; max 24 units); 97156 family training pays $25.26 HO / $20.13 HN (max 16 units). Two quirks worth wiring into billing: the TM rows on the fee file, marked as not requiring prior authorization, are school-based IEP services billed by the school district (telemedicine uses the ordinary code with POS 02 or 10 and needs the same precertification as in person), and technicians' claims must never carry the U8 modifier. The daily unit maximums are real — an October 2022 hot tip confirmed a system fix after 97153/97155 claims wrongly denied on limit restrictions.[3]
Missouri made the national RBT credential mandatory with a 90-day grace period: a behavior technician (18+, high-school diploma, 40-hour RBT training, passed initial competency assessment) may render services for up to 90 calendar days from passing the competency assessment, but must pass the national RBT exam and hold the BACB credential by day 90 to continue — effective April 1, 2024 and reiterated in MHD's June 2026 billing-compliance bulletin. Technicians and RBTs cannot enroll as MHD providers; their services are billed by the licensed supervisor with the HM modifier plus the supervisor's specialty modifier. Enrolled behavior analysts hold the Missouri (or home-state) LBA license, and psychologists may only bill ABA once MHD approves them for the ABA specialty (credential documents fax to MMAC Provider Enrollment, (573) 634-3105). One structural recommendation from the state's own training: group practices with two or more licensed behavior analysts should enroll as an "Autism Clinic" (Provider Type 50 – Clinic/Group, specialty AC), which parks precerts at the clinic level so any performing provider in the clinic can serve the client — a genuine continuity-of-care advantage when supervisors change.[4][5][2]
At the technician level, Missouri layers almost nothing on the BACB — because it delegated the whole credential: 13 CSR 70-98.030 requires technicians to be "credentialed by the Behavior Analyst Certification Board (BACB) as a Registered Behavior Technician," with no state-registry alternative, and the April 1, 2024 policy adds the age/education floor (18+, high-school diploma or national equivalent, the 40-hour training and competency assessment) alongside the 90-day exam runway covered above. That makes the BACB's own screening rules the binding check for every technician hire: within 180 days of paying for the RBT application, the applicant must pass a criminal background check and an abuse-registry check "comparable to those required of home health aides, child care professionals, and teachers" — an employer-run check inside that window satisfies it if you keep the documentation for audit. One pipeline wrinkle: applicants on or after January 1, 2026 need the updated 2026 40-hour training (certificate carrying the 2026 approval statement, trainer an active BCBA/BCaBA with supervision training) and the updated competency assessment.[8][9][10][11][12][13][14][15][16][17]
Supervisors carry the state's only individual-level fingerprint mandate. LBA and LaBA licensure under RSMo 337.315 (Behavior Analyst Advisory Board, Division of Professional Registration — applications now run through the MOPRO portal, launched January 14, 2025) requires two classified fingerprint sets: one processed by the Missouri State Highway Patrol against the state repository, the second forwarded to the FBI. Missouri also adds a training mandate found nowhere in the ABA payment rules: at least two hours of suicide assessment, referral, treatment, and management training at initial licensure and at every renewal (HB 1719, effective August 28, 2018). Useful for hiring pre-certification talent: the statute provides provisional licenses allowing practice under licensed supervision before BCBA/BCaBA certification — terminating automatically after one year, renewable once for a two-year maximum — plus 90-day temporary licenses (one extension) for practitioners licensed elsewhere. On structure, 13 CSR 70-98.030 requires each technician to work under an LBA, an LaBA, or a licensed psychologist officially granted supervisory privileges by the BACB, with the supervisory relationship documented in writing; the rule sets no numeric ratio of its own, so the BACB's 5%-of-monthly-hours RBT supervision minimum (two monthly face-to-face contacts, at least one individual) is the operative floor.[8][9][10][11][12][13][14][15][16][17]
At the agency level, screening runs through Missouri Medicaid Audit & Compliance: under 13 CSR 65-2 and 42 CFR 455.450, MMAC screens every provider at initial enrollment and revalidation by federal risk category — limited-risk screening covers cross-state license verification, identity confirmation, and database checks (SSA Death Master File, NPPES, OIG exclusions, Medicare enrollment, National Sex Offender Public Website); moderate risk (the default for any provider type not otherwise categorized) adds pre-enrollment and unannounced post-enrollment site visits; high risk adds fingerprint-based FBI and MSHP checks of every 5%-or-greater owner, submitted via the MACHS system through the state vendor IDEMIA, with an exemption for owners fingerprinted for Medicare or another state Medicaid within the last two years. Two honest caveats close the picture. First, Missouri's Family Care Safety Registry is not automatic for ABA agencies: RSMo 210.900 ties the "mental health worker" registration duty to personal-care staff of DD facilities and group homes, so a standard outpatient/in-home ABA clinic isn't covered by definition — though agencies operating DD facilities or group homes or employing personal-care workers are (registration within 15 days of hire), and many providers use the FCSR voluntarily as an inexpensive screening tool. Second, the MO HealthNet ABA rule itself contains no employee background-check provision, so the binding individual-level checks are exactly the BACB RBT check and the licensure fingerprinting above — confirm any employer-level extras with MMAC provider enrollment rather than assuming them.[8][9][10][11][12][13][14][15][16][17]
MO HealthNet publishes no rule that moves a precertification from one provider to another. What the Behavioral Health Services Manual does say shows where the precertification sits: it recommends that group practices with at least two licensed behavior analysts enroll as an Autism Clinic (Provider Type 50, specialty AC) because that "allows precertification under the clinic number so that other performing providers within the clinic can provide services if needed for continuity of care." Staff changes inside an Autism Clinic therefore do not need a new precertification. A move to a different agency is not addressed: all ABA except IEP school-based services requires precertification on the faxed request form, for up to six months, so ask the Behavioral Health Services help desk at (573) 635-6516 how the new provider should request before the first session.[2]
MO HealthNet sets required elements, not a DSM-5 template. 13 CSR 70-98.030(7) requires the treatment plan to be person-centered and individualized and developed by an LBA or LP. It must be based on the ABA assessment for intervention planning and "Include assessment and treatment protocols for addressing each of the target behaviors." It must include training for LABAs and RBTs, caregiver training (below), and care coordination. Goals must address the condition: the rule excludes solely educational, vocational or recreational services, but covers "ABA treatment goals, objectives, and procedures" related to those activities "but... medically necessary to address the deficits and symptoms of ASD." Continued precertification needs the current intervention plan and progress data/graphs. If progress is not evident, the request must identify barriers and strategies to improve effectiveness (Behavioral Health Services Manual §1.16; form 2575-045). Neither the rule nor the manual prescribes a goal template or a DSM-5 grouping.[19][2][20]
Caregiver training is a required part of the plan, but no minimum hours or utilization target is set. Under 13 CSR 70-98.030(7)(A), the plan shall "Include training and support to enable parents and other caregivers to participate in treatment planning and treatment plan implementation" and "Include care coordination involving the parents or caregiver(s)." Precertification form 2575-045 (January 2026) puts 97156 and 97157 on the intervention worksheet: you request units for each code, and they count toward the six-month total. Both codes require precertification (§1.16), and the faxed approval states the hours allowed. The only ceilings are unit limits: the MHD Applied Behavioral Analysis fee schedule (file dated 8/27/2026) lists "Maximum Units" of 16 for 97156 and 8 for 97157, following CMS medically unlikely edits. MHD's September 2026 billing tip adds that drop-off and pick-up conversations with caregivers are billable "only... if the behavior analyst or assistant behavior analyst is providing guidance, not just providing a status update."[19][20][2][1][21]
"Claims from participating providers that request MO HealthNet reimbursement must be filed by the provider and received by the state agency within twelve (12) months from the date of service" (13 CSR 70-3.100). Claims for a participant with other primary insurance go to that payer first but must still reach MO HealthNet within 12 months of the date of service, with the other payer’s adjudication attached or on file. On payment, MO HealthNet commits to pay 90% of clean claims from practitioners within 30 days of receipt and 99% within 90 days, and all other claims within 12 months (13 CSR 70-3.105). Members enrolled in a MO HealthNet managed care plan are billed to that plan, under its own filing rules.[23]
Yes. The Behavioral Health Services Manual's CMS-1500 instructions (§3.1) mark fields 17, 17a and 17b with a single asterisk, which "indicates required fields. These fields must be completed, or the claim is denied." Field 17: "Enter the name of the referring MO HealthNet enrolled primary care provider." Field 17b: "Enter the NPI number of the referring or ordering provider." Field 17a carries the ZZ qualifier and taxonomy only when the provider in 17b must report one to MHD.[2]
The same section governs every behavioral health claim, ABA included, so get the child's MO HealthNet-enrolled PCP (name and NPI) at intake, alongside the diagnostic evaluation by a licensed physician or psychologist that the precertification needs. The medical-record rules separately require "The name of the referring entity, when applicable."[2]
CPT codes with two modifiers, and no H-codes. The Behavioral Health Services Manual’s ABA billing table lists 97151, 97152, 97153, 97154, 97155, 97156, 97157, 97158, 0373T and 0362T, each billed with TM plus the rendering tier: HO for a psychologist or behavior analyst, HN for an assistant behavior analyst, and HM for services by an RBT or behavior technician billed under the licensed supervisor. Not every code is open at every tier: 97151, 0362T and 0373T are HO only, 97154 is HM only, and 97155 through 97158 take HO or HN but not HM. The manual lists no HCPCS H-code for ABA. Participants in a MO HealthNet managed care plan still receive ABA fee-for-service, so this table governs them too.[2]
The questions that decide whether a family can start with MO HealthNet (Missouri Medicaid), and what they have to bring. Each maps onto something intake should ask on the first call.
Under 21, on both pathways. “To be eligible for ABA services, participants must be under 21 and have a diagnostic evaluation performed by a licensed physician or licensed psychologist, resulting in a diagnosis of ASD, and recommending ABA services as medically necessary.” The Healthy Children and Youth (HCY) program — Missouri's EPSDT — keeps the same upper bound while widening the diagnosis: ABA is also covered for participants under 21 with other diagnoses if medically necessary. No lower age bound, no hour cap and no dollar cap are published.[2]
A short list: a licensed physician or a licensed psychologist. The diagnostic evaluation must be performed by one of those two, must result in an ASD diagnosis, and must recommend ABA as medically necessary. Under the HCY/EPSDT pathway the diagnosis need not be ASD at all, but the evaluation requirement stands. Note that the person who may diagnose and the person who may bill ABA are different populations in Missouri: psychologists may only bill ABA once MHD has approved them for the ABA specialty.[2]
Missouri names no instrument but names a standard. “The diagnostic evaluation should be performed in accordance with Autism Spectrum Disorders: Missouri Best Practice Guidelines for Screening, Diagnosis, and Assessment, published by the Missouri Autism Guidelines Initiative.” The precertification table treats instruments as a reassessment trigger rather than an entry requirement — re-administration of tools is listed among the clinical rationales for a periodic ABA Assessment for Intervention Planning. So collect the full evaluation report and whatever tools it used; do not expect a closed list to check it against.[2]
There is no separate referral document — the recommendation lives inside the diagnostic evaluation, which must result in an ASD diagnosis “and recommending ABA services as medically necessary.” What sits in a referral's place is precertification, and it is universal: “all ABA services (except for school-based ABA services included in an IEP) require precertification.” Fax form 2575-045 with the required clinicals to the Behavioral Health Services help desk at (573) 635-6516; there is no portal and no UM vendor. The initial assessment precert needs the diagnostic evaluation attached; the initial intervention precert needs that assessment plus the intervention plan; continuation needs the current plan, progress data and graphs, and — where progress is not evident — identified barriers and strategies.[2][4]
Permissive, and unusually explicit that technicians count. “Any licensed health care provider may provide telemedicine services if such services are within the scope of practice for which the health care provider is licensed… This includes applied behavior analysis services rendered by a behavior technician or RBT under the supervision of a licensed behavior analyst or licensed psychologist” (13 CSR 70-3.330(2)(A)). Services must meet the same standard of care as in person, and the provider must be fully licensed in Missouri and enrolled with MO HealthNet. Bill POS 02 (telemedicine not in home) or POS 10 (telemedicine in home); distant-site services on school grounds bill POS 03 with a GT modifier, and for a participant in a residential or inpatient place of service the claim carries the GT modifier and the POS where the participant physically is, never POS 02. Telemedicine in a school needs the parent or guardian's authorization first, which may cover the remainder of the school year. No ABA code is carved out, so the 97151 assessment and 97155 protocol modification (BCBA supervision of the technician) can be delivered by telemedicine like any other code within the provider's scope. Payment is "equal to the current Fee Schedule amount," and "a service provided through telemedicine is subject to the same precertification and utilization review requirements" as in person. Do not read the TM modifier on the ABA fee file as telemedicine: TM marks school-based IEP direct services, which are billed by the school district and are exempt from precertification. The manual sets no minimum share of supervision that must be in person.[2][3]
MO HealthNet decides ABA precertification itself (fee-for-service, faxed form 2575-045), and neither the Behavioral Health Services Manual nor the General Sections Manual publishes a decision timeframe. The federal fee-for-service floor therefore governs: since January 1, 2026 the state agency must decide a standard prior-authorization request "in no case later than 7 calendar days after receiving the request," extendable by up to 14 calendar days when the provider or participant asks or the agency needs more information, and an expedited request "in no case later than 72 hours after receiving the request." The clock starts on receipt, so send the complete package the ABA section lists with the form. Approvals come back by fax: "Providers will receive a faxed response indicating the number of hours allowed, as well as precertification start and end dates." ABA intervention is precertified "for a period of up to six (6) months from the start date," and nothing is backdated: "If services are initiated before the approval date on the Prior Authorization (PA) Request or after the authorization deadline, payment will not be made." Reauthorization lead time: "For services to continue after the expiration date of an existing PA Request, a new PA Request must be completed and submitted prior to the end of the current PA." No fixed number of days ahead is published.[24][2][25]
MO HealthNet pays last. "MHD does not and should not pay a claim for medical expenses until the provider submits documentation that all available TPRs have considered the claim for payment." Bill the child's commercial plan (or TRICARE, CHAMPVA, a non-custodial parent's court-ordered plan) first; MO HealthNet then pays only "the difference between the MHD allowable and the TPR benefit amount." If the commercial plan denies, attach a "legitimate denial" — an EOB stating the service is not payable "for reasons other than failure to meet claim filing requirements." MHD will not pay behind an administrative denial: "TPR's claim filing instructions were not followed" or "Any other payment precondition was not met," so get the commercial plan's own prior auth and network status right. An out-of-network commercial provider is paid only if that plan "has paid primary or there is a legitimate denial." Get the MO HealthNet precert too: the ABA rule has no other-insurance exception ("All ABA services (except for school-based ABA services included in an IEP) require precertification"), and the same manual states for behavioral-health precert that "Precertification is required when third party insurance coverage exists." The TPL bypass list (pay first, recover later) covers claims "Related to preventative pediatric care," personal care and ID/DD waiver services; ABA is not on it. Difficulty getting a primary EOB does not extend MO HealthNet's 12-month filing limit.[25][2][26]
No recency rule is published. §1.16 requires a diagnostic evaluation by a licensed physician or licensed psychologist but does not state how recent it must be, and the precertification table asks for the diagnostic evaluation on the initial assessment request without a date test. The only currency requirement sits on the assessment rather than the diagnosis: a periodic re-assessment precertification must carry a clinical rationale — re-administration of tools, a new behavior observed, a new environment where the participant is responding differently, or a lack of adequate progress.[2]
Ask the plan: MHD Behavioral Health Services help desk at (573) 635-6516 when faxing form 2575-045 — ask whether an evaluation of this age will be accepted before you book the assessment.
Coverage decides whether MO HealthNet (Missouri Medicaid) pays. These decide whether the claim survives: how sessions must be staffed and supervised, what may be billed concurrently, the per-day ceilings, who signs the note, where the service is payable, and whose NPI the claim goes out under.
Missouri delegates the ratio and keeps the accountability. 13 CSR 70-98.030 requires each technician to work under an LBA, an LaBA, or a licensed psychologist granted supervisory privileges by the BACB, “the supervisory relationship with a licensed ABA practitioner must be documented in writing, and the licensed supervisor is responsible for the work performed by unlicensed individuals.” The rule sets no numeric ratio of its own, so the BACB's 5-percent-of-monthly-hours RBT supervision minimum (two monthly face-to-face contacts, at least one individual) is the operative floor. Technicians have 90 calendar days from passing the initial competency assessment to hold the national RBT credential, and the grace period attaches to the person, not to your company.[2][8][9]
Allowed, on separate lines with separate clocks. MHD's September 9, 2026 ABA billing hot tip settles the 97153/97155 question the manual left open: “if a Behavior Analyst provides concurrent protocol modification (CPT 97155) during part of this session… the behavior analyst must document their own discrete start/stop times in the participant record and bill their units on a single, separate line under CPT 97155.” The same notice sets the claim shape for every ABA code: sum the day's active minutes per code first, convert once to 15-minute units, and submit “one single line with the total daily units per procedure code” — multiple lines for the same code on the same day deny as duplicates in eMOMED. Only active service time counts: naps, free play, waiting and transitions are never billable, meals and toileting only against a specific assessment or BIP goal, and progress notes written after the session are not billable. Travel time is also excluded (§1.16).[21][2]
Real, published and worth wiring into scheduling: per 15-minute unit, 97151 is capped at 32 units a day, 97153 at 32 units (8 hours) a day, 97155 at 24 units, and 97156 family training at 16 units. The precertification itself sets the other ceiling — ABA intervention may be precertified for up to six months from the start date, and the faxed response comes back with the number of hours allowed plus the start and end dates. The daily maximums bite: an October 2022 hot tip confirmed a system fix after 97153 and 97155 claims wrongly denied on limit restrictions. Count units against the cap the way MHD's September 2026 hot tip prescribes — total the day's active minutes per code, then convert once (8–22 minutes = 1 unit, 23–37 = 2, and so on), never rounding each short session up before adding.[21][3][2]
Missouri puts the signature on the supervisor, explicitly. For behavior technicians and RBTs, “the licensed supervisor is responsible for the work performed by unlicensed individuals, including reviewing and signing documentation for services provided by the behavior technicians and RBTs they supervise.” Beyond that, “all services provided must be adequately documented in the medical record” under 13 CSR 70-3.030 and the Title XIX Provider Participation Agreement — see the manual's own definitions of adequate documentation and adequate medical records. MHD's September 2026 ABA hot tip adds a timing rule: the record must note “the exact start and stop times for each ABA service,” with non-therapy time subtracted — an “8:00 AM to 4:00 PM (32 units)” block entry invites post-payment recoupment. No signing deadline is published.[2][21][8]
Four settings, and the modifier follows the setting. “Services may be provided in POS 11 (office), 12 (home), 03 (school) or 99 (other). The U8 modifier should be used for services billed with a POS 12 (home) or 99 (other)” — and the U8 modifier must never be used on a behavior technician or RBT line. School-based ABA delivered under an IEP is the single precertification exemption in the whole benefit. Telemedicine uses POS 02 (not in home) or POS 10 (in home), except that distant-site services delivered on school grounds bill POS 03 with a GT modifier.[2]
The supervisor bills; the technician cannot. “Services provided by a behavior technician or RBT must be billed by the licensed supervisor using the codes and modifiers specified… Behavior technicians and RBTs are not allowed to enroll as MHD providers.” The HM modifier flags technician delivery and the supervisor adds their own specialty modifier (HO for behavior analyst or psychologist, HN for assistant behavior analyst). Psychologists may bill ABA only once MHD approves them for the ABA specialty, and should not use the AH modifier with these codes. MHD recommends that group practices with two or more licensed behavior analysts enroll as an Autism Clinic (Provider Type 50 — Clinic/Group, specialty AC), which parks the precertification at the clinic level so any performing provider in the clinic can serve the client.[2][5]
Yes — for participants under 21, with precertification. The standard benefit requires an ASD diagnosis from a licensed physician or psychologist; under EPSDT/HCY, ABA is also covered for other diagnoses when medically necessary.
No. ABA is fully carved out of managed care — every member, including MCO and Show Me Healthy Kids enrollees, gets ABA through state fee-for-service. One payer, one precert form, no MCO credentialing for ABA.
Fax form 2575-045 (the ABA Request for Precertification) with the required clinicals to the Behavioral Health Services help desk at (573) 635-6516. There's no portal or UM vendor — approval comes back by fax with hours and dates, for periods up to 6 months.
Per 15-minute unit: 97151 at $25.26; 97153 at $20.13 (analyst/assistant tiers) or $16.37 with the HM technician modifier; 97155 at $25.26 ($27.46 in-home with U8); 97156 at $25.26. The HM-vs-HO split makes staffing mix the key revenue lever.
Only MO HealthNet publishes its ABA rates, so it is the only payer that can be compared on paper. Its Applied Behavioral Analysis fee schedule (file dated August 27, 2026) pays per 15-minute unit by rendering tier: 97153 $20.13 when billed at the behavior analyst (HO) or assistant (HN) tier and $16.37 with the RBT modifier (HM); 97151, 97155 and 97156 $25.26 at the HO tier, with 97155 at $27.46 in the home (U8); group codes pay very little (97154 $2.05, 97158 $3.16 HO). Commercial ABA rates in Missouri (Aetna, Cigna, UnitedHealthcare/Optum, Anthem BCBS) are not published; they are negotiated in each participating-provider agreement, so no public source ranks them — benchmark your offers against the MO HealthNet schedule. What does differ publicly is the benefit: fully insured commercial plans follow RSMo § 376.1224, which caps ABA at a $40,000 statutory base through age 18, inflation-indexed ($57,311 published for 2025) and exceedable with plan approval, while MO HealthNet covers ABA for participants under 21 and pays it fee-for-service for every Medicaid member, MCO enrollees included.
Yes, billed by the licensed supervisor with the HM modifier — but the national RBT credential is mandatory: technicians have 90 calendar days from passing the initial competency assessment to pass the RBT exam and be BACB-credentialed.
Yes. The telemedicine rule covers any service within the provider's scope, technicians included, paid at the fee-schedule amount. Bill POS 02 (not in home) or POS 10 (in home), or POS 03 with GT on school grounds. Telemedicine needs the same precertification as in person; the TM modifier on the fee file is for school-based IEP services, not telemedicine.
There is no MCO network to join for ABA. Every MO HealthNet member, including managed-care enrollees, receives ABA fee-for-service, so a provider enrolls with MO HealthNet through Missouri Medicaid Audit and Compliance rather than contracting with Healthy Blue, Home State Health or UnitedHealthcare. The manual recommends Autism Clinic enrollment for groups with two or more licensed behavior analysts.
The manual does not say it transfers. Inside an Autism Clinic the precertification sits under the clinic number, so other performing providers there can continue care. For a new agency, call the Behavioral Health Services help desk at (573) 635-6516 before the first session.
No DSM-5 template. 13 CSR 70-98.030 requires an individualized plan built on the ABA assessment, with assessment and treatment protocols for each target behavior and goals that address the deficits and symptoms of ASD.
Parent/caregiver training is a required treatment-plan element under 13 CSR 70-98.030(7), but no hour minimum is set; the fee schedule caps 97156 at 16 units and 97157 at 8 units. Request 97156/97157 units on form 2575-045; the precertification sets the hours.
Twelve months from the date of service, measured to the date MO HealthNet receives the claim (13 CSR 70-3.100). Managed care plans set their own limits.
Yes. In the Behavioral Health Services Manual's CMS-1500 instructions, fields 17 and 17b are required ("These fields must be completed, or the claim is denied"). Field 17 takes the referring MO HealthNet-enrolled primary care provider and 17b the referring or ordering NPI.
MO HealthNet publishes no clock-time rule against it. 13 CSR 70-98.030 requires services to "give consideration to the child's age, school attendance requirements, and other daily activities as documented in the treatment plan," and bills only active ABA time. Show the other therapies in the plan and keep separate start and stop times.
No. MO HealthNet bills ABA on CPT 97151–97158, 0362T and 0373T with the TM modifier plus HO, HN or HM for the rendering tier; the Behavioral Health Services Manual lists no H-codes for ABA.
Yes. A continued ABA intervention precertification needs the current intervention plan and progress data and graphs, plus barriers and strategies where progress is not evident; intervention is precertified for up to six months at a time.
Payer policies change frequently and vary by plan, state, and funding type. This guide was compiled from the sources above and last reviewed October 2026; it is general information, not billing, legal, or clinical advice. Always verify current requirements against the payer's live policy and a benefits check for the specific member.
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