US behavioral health practices have a sharper intake-form problem than most clinical areas. PHQ-9, GAD-7, PCL-5, AUDIT-10, and the rest of the screening battery are the form, repeated visit after visit, with scores that have to land back in the clinical record as Observations a clinician can trend. A FHIR form builder that handles those instruments cleanly is the one US behavioral health practices keep.
This list covers the FHIR form builders most often picked for US behavioral health intake in 2026. For the FHIR learning path, the broader hub covers the related topics.
For the architectural context first, the complete guide to FHIR-driven intake forms for US health systems in 2026 frames the field this list narrows into.
FHIR Form Builders Built for US Behavioral Health Intake
Order tracks how often each shows up in active US behavioral health intake deployments in 2026.
- NLM LHC Forms. The reference SDC renderer ships pre-built PHQ-9, GAD-7, and PCL-5 Questionnaires, which makes it the natural starting point for US behavioral health builds.
- Medplum Forms. TypeScript-first form layer that fits the digital-health behavioral-health product stack, with clean QuestionnaireResponse-to-Observation extraction for screening scores.
- Smart Forms. Open-source SDC renderer with strong calculated-expression support, important for the scoring rules embedded in PHQ-9 and similar instruments.
- Aidbox Forms. Commercial form builder paired with the Aidbox FHIR backend, used by US behavioral health platforms that want one vendor across forms and the clinical record.
- Formbox. Commercial form builder with pre-built behavioral health screening instruments and managed content updates.
What "Behavioral-Health-Intake-Ready" Actually Means
Three concrete behaviors separate a behavioral-health-ready form builder from a generic one:
- Native handling of behavioral-health screening instruments with their scoring rules, including the conditional follow-up questions PHQ-9 question nine triggers.
- Clean QuestionnaireResponse-to-Observation extraction so a PHQ-9 score lands in the clinical record as an Observation a clinician can trend.
- Privacy-aware handling of substance-use intake under 42 CFR Part 2, including segmented disclosure when the screening crosses Part 2 boundaries.
The five above all clear those bars in production deployments. Several technically capable form builders handle PHQ-9 mechanically but stumble on the QuestionnaireResponse-to-Observation extraction or the Part 2 segmentation.
Which Form Builder for Which Behavioral-Health Pattern
US behavioral health startups going fast lean toward Medplum or Aidbox for the integrated story. US behavioral health networks that want strong screening-instrument coverage out of the box pick NLM LHC Forms or Formbox. Academic behavioral health centers with engineering capacity stay on Smart Forms for the calculated-expression control.
For US behavioral health practices that operate primarily through telehealth, Top 4 FHIR Questionnaire engines for US telehealth visits in 2026 is the more useful adjacent reference. For long-term-care behavioral health overlap, Top 4 SDC form engines for US skilled nursing facility onboarding covers the SNF intake angle.
How to Pilot a Behavioral-Health Form Builder
Pick the screening battery a US behavioral health practice actually uses every visit. Build PHQ-9, GAD-7, and PCL-5 as SDC Questionnaires with their full scoring rules. Render them in the candidate form builder, complete them as a synthetic patient, and confirm the resulting QuestionnaireResponse extracts to an Observation with the right score. Walk through a 42 CFR Part 2 segmentation pattern end to end.
The candidate that handles the scoring, the Observation extraction, and the Part 2 segmentation cleanly is the one to short-list. The one that needs application-layer glue for any of the three is the one to drop before the rollout grows expensive.
Sources
- PHQ-9 FHIR Questionnaire example - example, HL7 International, 2024
- GAD-7 LOINC code 69737-5 - code page, Regenstrief / LOINC, 2024
- 42 CFR Part 2 final rule fact sheet - webpage, HHS, 2024