TRICARE requires the same set of standardized questionnaires for every child in ABA. They are called outcome measures, and under the Autism Care Demonstration (ACD) they decide more than many parents expect: TRICARE will not issue a treatment authorization until the measures due that period are in. This guide explains each of the four measures, who fills out what, when they repeat and how to keep a late form from pausing your child's ABA. It is based on the TRICARE Operations Manual, tricare.mil and Humana Military's TRICARE East pages as of October 20, 2026.
What are TRICARE's ABA outcome measures, and why are they required?
Tricare.mil says you and your child's provider team "must complete four baseline outcome measures before your child can get ABA services. This will help monitor your child's progress." The TRICARE Operations Manual says all measures must use "norm-referenced, valid, and reliable evaluation tools" and be completed and reported "prior to issuing the treatment authorization."
The four measures are:
- Pervasive Developmental Disorder Behavior Inventory (PDDBI)
- Vineland Adaptive Behavior Scales, Third Edition (Vineland-3)
- Social Responsiveness Scale, Second Edition (SRS-2)
- Parenting Stress Index, Fourth Edition (PSI-4) for parents of children up to 12, or the Stress Index for Parents of Adolescents (SIPA) for ages 11 to 19
Your navigator adds the results to your child's comprehensive care plan, and the contractor uses them, along with the BCBA's reassessment, in each six-month clinical necessity review.
What does each measure look at?
PDDBI: the core autism measure
Humana Military says TRICARE chose the PDDBI "as it focuses on the core deficits of ASD based on the DSM-5 criteria." It is a rating scale for ages 2 to 18.5 covering problem behaviors and social, language and learning skills. At baseline only the parent form is required. After that, every six months, both a parent form and a teacher form are required. The manual says the teacher form "must be completed by only the BCBA," not by a classroom teacher, and that responsibility cannot be delegated.
Vineland-3: everyday living skills
The Vineland-3 measures adaptive behavior, the daily skills in communication, daily living, socialization and (for younger children) motor skills. TRICARE accepts the parent form, the teacher form or the interview form when a TRICARE-authorized provider conducts it. It is required at baseline and every year.
SRS-2: social communication
The SRS-2 is a 65-item rating scale of social behavior for ages 2 and a half through adulthood. TRICARE requires the parent form at baseline and every year.
PSI-4 or SIPA: how parenting stress is going
These ask about you, not your child. The PSI-4 short form, or the SIPA for parents of adolescents, is required at baseline and every six months. Humana Military says the PSI scores "are not used for modification of the TP but rather to support the individual family's specific needs," and that the PSI is not meant to diagnose a parent's mental health. A high stress score is a signal for support, such as respite or counseling referrals, not a mark against you.
When are the measures due?
| Measure | Form | Baseline | Then | Who completes or administers |
|---|---|---|---|---|
| PDDBI | Parent form at baseline; parent and teacher forms after | Yes | Every 6 months | Authorized ABA supervisor (BCBA); teacher form by the BCBA only |
| Vineland-3 | Parent, teacher or interview form | Yes | Every 12 months | Autism diagnosing provider, or the BCBA if pre-authorized |
| SRS-2 | Parent form | Yes | Every 12 months | Autism diagnosing provider, or the BCBA if pre-authorized |
| PSI-4 (to age 12) or SIPA (11 to 19) | PSI short form; SIPA form named in the manual | Yes | Every 6 months | Autism diagnosing provider, or the BCBA if pre-authorized |
In a typical first two years, that means all four measures before treatment starts, then the PDDBI and PSI or SIPA at six months, all four at one year, the PDDBI and PSI or SIPA at 18 months and all four at two years, when the new referral is also due. Your actual dates are set by when each form was received.
Timing rules that matter
- Not too early. Measures must be completed no more than 90 calendar days before their due date.
- Baseline can be recent, not old. The contractor may accept valid baseline measures dated up to one year before services start.
- Dates follow receipt. The next due date is counted from when the contractor received each measure. The Vineland and SRS are aligned to a yearly cycle.
- Moves do not reset the clock. The schedule "does not change when changing regions, provider, or beneficiary category." It resets only if you pause ACD services for more than 180 calendar days. See PCS to Florida with ABA.
What happens if a measure is late?
This is where families get caught. The manual tells the contractor to "terminate ASN services and not issue a subsequent ABA treatment authorization for failure to complete any and all outcome measures." Before that, the contractor must identify the problem and try to help the family resolve it.
Because reauthorization requests should go in 60 to 30 days before the current authorization ends, and the contractor cannot back-date late requests, a form that arrives late can leave a gap with no authorized sessions. Humana Military's guide puts it simply: "You must finish the measures to keep your authorization."
If your diagnosing provider cannot do the measures, Humana Military says your BCBA can complete them with pre-authorization, and its TRICARE East welcome guide notes that "your BCBA may complete the outcome measures if you do not have an ASD-diagnosing provider." Providers who are stuck can call Humana Military's ABA line, 866-323-7155.
How can parents make the forms easier and more accurate?
- Put due dates on your calendar as soon as you get them, with a reminder 60 days ahead. Ask your navigator for the dates if you do not have them; see your Autism Services Navigator.
- Use the same respondent when you can. TRICARE requires the respondent's name and relationship to your child on every form, and they must match. Changing who answers can make scores harder to compare.
- Answer for a typical recent week, not your child's best or worst day. Honest answers help the BCBA set the right goals and hours.
- Ask what each question means if it is unclear. Humana Military says staff will walk you through the process if you need help.
- Keep copies of every completed measure and the date sent. TRICARE requires the full score report, not just numbers typed into the treatment plan.
- Look at the results with your BCBA. Scores show trends over time alongside session data; our guide to reading an ABA progress report explains how they fit together.
Do the scores decide how many hours my child gets?
Not by themselves. The contractor reviews the BCBA's reassessment, treatment plan, progress data and outcome measures together. The manual says that if outcome measures show a child is not making clinically sufficient progress, the contractor works with the provider to revise the plan before authorizing it. Hours come from clinical necessity, and there is no yearly or lifetime cap on ABA under the ACD. For the bigger picture, see our TRICARE Autism Care Demonstration guide.
How Hope Center handles TRICARE outcome measures
Hope Center for Behavior Change accepts TRICARE East (Humana Military). Our BCBAs track each child's measure dates alongside the six-month treatment plan, explain the parent forms during weekly parent training and go over results with you before the plan is submitted. Our clinical director reviews every plan before it goes to TRICARE. For first-time families, our TRICARE ABA referral checklist shows where the baseline measures fit.
Visit our TRICARE ABA page, request a free consultation or call 561-337-8865.