Montana Medicaid

MedicaidMT

ABA billing requirements · Source: Montana Medicaid — ABA Services Coverage Policy

Medium confidence

Verified 2026-03-01

Authorization Requirements

Requires prior auth Yes

Initial auth duration6 months

Renewal auth duration6 months

Submission deadline14 days

Unit tracking cadenceTotal

Requires FBA Yes

Diagnostic eval validityN/A

Re-eval cadenceN/A

State licensure requiredBCBA state licensure required via MT Board of Behavioral Health

Documentation Requirements

Parent signatures required No

Start/stop times required Yes

Treatment plan componentsBehavior Identification Assessment, Treatment Plan

Progress summary cadenceEvery 6 months

Policy Notes

Initial authorization period is 180 calendar days or 1,260 units of service. Prior authorization is not needed for initial service delivery, but is required for continued services. Renewal requests must be submitted 14 days prior to expiration. Parent/guardian presence is not required for all treatment, only for training sessions. Annual clinical re-assessment is required for SED diagnosis.

CPT & Modifier Rules

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View H-codes, modifiers, unit limits, and billing restrictions for Montana Medicaid.

Official policy source:Montana Medicaid — ABA Services Coverage Policy

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Data last verified: 2026-03-01 · Confidence: Medium · See our methodology

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