A parent sits across from you after their child's initial evaluation. They ask a simple question: "Is my child behind?"

That question deserves a clinically precise, evidence-grounded answer — not a clinical impression, not a general observation, and not a narrative description of what you watched the child do for 45 minutes.

That answer comes from outcome measures. Specifically, it comes from knowing which measure to administer, what its scores actually mean, how confident you can be in those scores, and how they translate into functional goals that a Medicaid MCO, an IEP team, or a school district will accept as evidence of need.

Outcome measure selection is one of the highest-leverage clinical decisions a pediatric OT makes — and one of the least discussed in day-to-day practice. The right tool chosen for the right child in the right setting makes the difference between a defensible evaluation and a denied authorization. Between an IEP team that trusts your data and one that questions your methodology. Between a family that understands their child's needs and one that leaves the evaluation confused.

This guide covers the four outcome measures that appear most frequently in pediatric OT practice in 2026 — the PEDI-CAT, PDMS-2, BOT-2, and SPM-2 — at practitioner depth: what each measures, who it is designed for, how its scores should be interpreted, where it fits in a documentation workflow, and where each tool has limits that practitioners need to understand before relying on it.

What Is the PEDI-CAT — and Why Has It Become the Default Functional Outcome Measure for Pediatric OT?

The Pediatric Evaluation of Disability Inventory — Computer Adaptive Test (PEDI-CAT) is a revised, technology-enabled version of the original PEDI, first published in 1992 by Haley, Coster, and colleagues at Boston University. Where the original PEDI was a structured parent interview administered by a clinician in 45–60 minutes, the PEDI-CAT is a computer-administered adaptive test that uses item response theory (IRT) to deliver only the most relevant items for a given child — consistently completing in under 20 minutes for most parent respondents.

The PEDI-CAT covers children and youth from birth through 20 years of age across four domains:

•        Daily Activities: self-care tasks including eating, dressing, bathing, and home management

•        Mobility: locomotion, transitions, and carrying objects in functional contexts

•        Social/Cognitive: communication, interaction, self-management, and problem-solving

•        Responsibility: the extent to which the child or caregiver manages complex multi-step life tasks — a domain added specifically to support transition-age planning

What Do PEDI-CAT Scores Actually Tell You — and What Do They Not?

The PEDI-CAT generates T-scores with a mean of 50 and standard deviation of 10, available across 21 age groups in one-year intervals. A T-score between 40 and 60 places a child within one standard deviation of age-expected function. Scores below 40 indicate clinically meaningful functional delay.

Test-retest reliability across all four domains is excellent: intraclass correlation coefficients (ICCs) range from 0.96 to 0.99 (Haley et al., 2011, Developmental Medicine and Child Neurology; Shore et al., 2019, Archives of Physical Medicine and Rehabilitation). This makes the PEDI-CAT particularly well-suited to re-evaluation at authorization renewal — the score change from baseline to re-evaluation provides the quantitative progress evidence that payer reviewers require.

ICC 0.96–0.99 — PEDI-CAT test-retest reliability across all four domains — among the highest of any pediatric functional outcome measure (Shore et al., 2019, Archives of Physical Medicine and Rehabilitation)

What PEDI-CAT scores do not tell you: the mechanism underlying the functional difficulty. A low Daily Activities score tells you the child struggles with self-care tasks. It does not tell you whether that difficulty is driven by motor planning problems, sensory processing differences, executive function deficits, or behavioral factors. PEDI-CAT is a functional measure, not a diagnostic measure — it answers "how is the child performing?" not "why is the child struggling?" That is why the PEDI-CAT works best in combination with performance-based or sensory-specific tools, not as a standalone evaluation battery.

Where Does the PEDI-CAT Fit in 2026 Documentation and Payer Workflows?

The PEDI-CAT is one of the few pediatric outcome measures that can be administered by parent report via telehealth — making it operationally unique in a post-COVID OT practice landscape where hybrid and telehealth delivery is standard for evaluation follow-ups and re-evaluations. For practices using automated documentation platforms, PEDI-CAT scores can be embedded directly into the evaluation report workflow, with score changes calculated automatically against the baseline established at the initial evaluation.

From a payer perspective, the PEDI-CAT is accepted by Medicaid managed care programs, EI Part C providers, commercial insurers, and IDEA-governed school programs across the US. The Responsibility domain is particularly valuable for transition-age OT documentation (ages 16–21 under IDEA), where the functional focus of the PEDI-CAT aligns directly with secondary transition planning requirements.

 What Is the PDMS-2 — and When Is It the Right Tool for Early Childhood OT Evaluations?

The Peabody Developmental Motor Scales, Second Edition (PDMS-2), published by Folio and Fewell (2000, Pro-Ed), is the dominant standardized motor assessment for children from birth through 5 years, 11 months. Unlike the PEDI-CAT's functional report format, the PDMS-2 is performance-based — the child performs tasks directly while the examiner scores them on a three-point scale: 0 (cannot attempt or fails), 1 (partial performance), or 2 (criterion performance).

The PDMS-2 generates three composite quotients that are critical for EI and early childhood OT documentation:

•        Gross Motor Quotient (GMQ): combines stationary, locomotion, and object manipulation subtests

•        Fine Motor Quotient (FMQ): combines grasping and visual-motor integration subtests

•        Total Motor Quotient (TMQ): composite of all six subtests — the most commonly reported score for payer and IDEA eligibility determination

How Should You Interpret PDMS-2 Quotient Scores for Medicaid and EI Documentation?

PDMS-2 quotients are standard scores with a mean of 100 and standard deviation of 15. A score below 70 (more than two standard deviations below the mean) is the threshold commonly used by state EI programs for Part C eligibility determination under IDEA — though individual state policies vary. Scores in the 70–85 range (one to two SDs below mean) typically indicate "at risk" status and may qualify for monitoring programs or early evaluation under specific state policies.

The PDMS-2 also provides age equivalents, which are useful for caregiver communication but must be interpreted carefully in documentation: payers and IEP teams rely on standard scores and percentile ranks, not age equivalents, for eligibility and progress decisions. Documenting only age equivalents without standard scores is a common documentation error that can delay authorization.

A PDMS-2 total motor quotient (TMQ) below 70 is the most widely recognized early intervention eligibility threshold under IDEA Part C. Always document the TMQ alongside the GMQ and FMQ — and include the percentile rank for each. Age equivalents alone are not sufficient for payer or IDEA eligibility documentation.

What Are the Key Limitations of the PDMS-2 That Practitioners Often Miss?

The most operationally significant limitation of the PDMS-2 is its age ceiling: the normative sample ends at 5 years, 11 months. For a child who enters an OT caseload at age 3 and ages out of the PDMS-2 at age 6, the practice needs a documented transition plan to a different outcome measure — typically the BOT-2 for motor proficiency — to maintain measurement continuity across the re-evaluation cycle. Practices that administer the PDMS-2 beyond its normative age range produce scores that cannot be interpreted against peer norms, which undermines the documentation's evidentiary value.

A second limitation: the PDMS-2 requires in-person administration with physical materials. It cannot be adapted for telehealth. For practices with hybrid delivery models, this means initial evaluations for children under six must occur in-person — a scheduling and access consideration worth building into intake workflows.

What Is the BOT-2 — and How Do You Use It Correctly in School-Based and Outpatient Settings?

The Bruininks-Oseretsky Test of Motor Proficiency, Second Edition (BOT-2; Bruininks & Bruininks, 2005, Pearson) is the most widely used standardized motor assessment for school-aged children and adolescents in the US. It covers ages 4 through 21 across four motor area composites: Fine Manual Control, Manual Coordination, Body Coordination, and Strength and Agility — eight subtests in total.

The BOT-2 has two administration forms. The Complete Form (53 items, 45–60 minutes) is the most reliable and is recommended for eligibility determination and diagnostic documentation. The Short Form (14 items, 15–20 minutes) provides a quick screen of overall motor function and is appropriate for progress monitoring where a full re-evaluation is not required.

How Do BOT-2 Composite Scores Map to IDEA and Medicaid Documentation Requirements?

The BOT-2 generates standard scores (mean 50, SD 10 for composites) and percentile ranks at the subtest and composite level. For school-based IDEA documentation, the Total Motor Composite score is the primary evidence for motor eligibility — though APTA's evidence summary and Deitz, Kartin, and Kopp (2007, Physical and Occupational Therapy in Pediatrics) note an important limitation: a child with a significant discrepancy between fine and gross motor performance may produce a Total Motor Composite score within the normative range, effectively masking a clinically meaningful deficit in one area.

This is not a minor technical point. For a child whose fine motor deficits affect handwriting and classroom participation but whose strong gross motor scores bring the composite into the average range, BOT-2 composite scoring alone may disqualify them from school-based OT services even when functional impairment is clearly present. The clinical and documentation response: supplement the Total Motor Composite with subtest-level scores and functional observation data that document the educational impact of the fine motor deficit — the IDEA educational necessity standard requires functional impact, not just a below-average composite score.

The BOT-2 Complete Form total composite score is the most defensible evidence for school-based motor eligibility under IDEA Part B. But for children with discrepant fine and gross motor profiles, subtest scores and functional impact documentation are essential. A composite score within normal limits does not automatically indicate that OT services are unnecessary.

What Should Practitioners Know About BOT-2 Norms in 2026?

The BOT-2 normative sample was collected in 2001 using Current Population Survey data from the US Bureau of the Census. In 2026, those norms are 25 years old. Research in pediatric motor assessment has noted that aging normative samples can affect score interpretation, particularly for culturally and demographically diverse populations. A 2025 cross-national comparison study (Al-Thumali, Hay, and Beamish, HAYEF: Journal of Education, 2025) found that the BOT-2 is a reliable instrument for cross-national motor assessment, but practitioners working with diverse pediatric populations should be aware that norms may not fully reflect current demographic distributions.

Pearson has not published a BOT-3 as of early 2026. When evaluating a child whose cultural or demographic background differs substantially from the 2001 norm sample, practitioners should document this context in the evaluation report and supplement with functional observational data. This is both good clinical practice and E-E-A-T compliant documentation — it demonstrates the clinical reasoning behind score interpretation rather than presenting a standard score as self-evidently sufficient.

What Is the SPM-2 — and How Do You Use It to Document Sensory Integration Interventions?

The Sensory Processing Measure, Second Edition (SPM-2; Parham, Ecker, Miller Kuhaneck, Henry, and Glennon; Western Psychological Services, 2021) is a norm-referenced caregiver and teacher rating scale that assesses sensory processing across eight sensory systems — vision, hearing, touch, taste/smell, body awareness (proprioception), balance (vestibular), planning and ideas (praxis), and social participation — in children ages 2 through 12.

Unlike the PEDI-CAT, PDMS-2, and BOT-2, the SPM-2 does not measure what a child can do. It measures how a child's nervous system processes sensory information — and how those processing patterns affect their ability to participate in daily activities at home, in the classroom, and in the community.

How Do SPM-2 Scores Justify Sensory Integration Intervention to Payers?

The SPM-2 generates T-scores for each sensory system and for the composite Social Participation scale. Scores in the Typical range (T-score 40–59) indicate age-expected sensory processing. Scores in the Some Problems range (T-score 60–69) indicate emerging sensory processing differences with functional impact. Scores in the Definite Dysfunction range (T-score ≥70) indicate significant sensory processing differences that are interfering with daily participation.

For Medicaid and commercial payers, SPM-2 scores in the Definite Dysfunction range — combined with documented functional impact in the evaluation report — provide the most defensible justification for sensory integration interventions billed under CPT 97533 (sensory integrative techniques, per 15 minutes). The AOTA Practice Guidelines for Sensory Integration with Children Experiencing Difficulties Processing and Integrating Sensory Information (2019) established the evidence base for SI interventions; the SPM-2 provides the individual patient measurement that connects that evidence base to the specific child's documented need.

The SPM-2's dual-rater format — with separate Home and School forms completed by caregiver and classroom teacher respectively — is clinically and documentarily significant. Consistent Definite Dysfunction scores across both raters demonstrate that the sensory processing pattern is not context-specific or behavior-driven, but a neurologically consistent processing difference. This cross-rater consistency is the strongest SPM-2 documentation argument for sensory-based OT intervention.

What Are the Clinical Boundaries of the SPM-2 That Practitioners Must Communicate?

The SPM-2 does not diagnose Sensory Processing Disorder. This is the most important limitation to communicate — to families, to referral sources, and in documentation. The SPM-2 identifies sensory processing patterns that differ from age-expected norms. Clinical interpretation of those patterns — determining whether they constitute a diagnosable condition, how they interact with co-occurring diagnoses such as ASD or ADHD, and what interventions are appropriate — requires licensed OT clinical judgment. Presenting SPM-2 results without clinical interpretation in an evaluation report is both clinically insufficient and documentarily inadequate.

How Do These Four Assessments Compare? A Practitioner-Level Reference

The table below compares PEDI-CAT, PDMS-2, BOT-2, and SPM-2 across the criteria that matter most in day-to-day pediatric OT practice: administration format, psychometric properties, payer acceptance, and clinical use case.

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Which Assessment Should You Choose? A Clinical Scenario Guide

Most pediatric OT evaluations benefit from combining a functional outcome measure with a performance-based or sensory-specific tool. The table below maps common clinical scenarios to recommended assessment combinations — with the rationale behind each pairing.

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How Is Outcome Measure Selection Changing in 2026 — and What Should Practitioners Watch?

Three developments are reshaping how pediatric OTs select, administer, and document outcome measures in 2026.

Digital-First Administration Is Now the Expectation, Not the Exception

The PEDI-CAT and SPM-2 are both fully administrable via telehealth parent-report formats. As hybrid and telehealth OT delivery becomes standard, practices that rely exclusively on performance-based measures for re-evaluations face access and scheduling constraints that can disrupt re-authorization timelines. Building a hybrid assessment battery — one performance-based tool for initial evaluation, one parent-report tool for re-evaluation monitoring — allows practices to maintain measurement continuity without requiring in-person attendance for every re-eval.

Payer Scrutiny of Sensory Intervention Documentation Is Increasing

CMS's 2026 prior authorization expansion and increased Medicaid managed care scrutiny of sensory integration services (CPT 97533) has elevated the documentation standard for SI-based OT. SPM-2 Definite Dysfunction scores, combined with explicit medical necessity language linking sensory processing patterns to functional ADL participation, are now the minimum documentation baseline for practices seeking to maintain authorization for sensory-based interventions. Practices relying on clinical observation alone — without standardized sensory outcome measure data — are at elevated audit risk in 2026.

AI-Assisted Score Interpretation Is Emerging — With Real Quality Concerns

AI documentation tools are beginning to offer auto-populated outcome measure language based on score inputs. The quality risk parallels the broader AI documentation concern: fluent, plausible language that lacks the clinical specificity required for payer review. An AI-generated PEDI-CAT interpretation that describes a T-score of 35 as indicating "some difficulties with daily activities" without specifying which domain, the functional impact on occupational participation, and the OTPF-4 performance skill area affected is not adequate documentation — regardless of how grammatically smooth it reads. Practitioners using AI assistance for score interpretation should treat AI-generated language as a first draft requiring clinical annotation, not a final documentation deliverable.

Spry's pediatric OT documentation platform integrates outcome measure score entry directly into the evaluation workflow — auto-calculating score changes from baseline at re-evaluation, generating OTPF-4 aligned interpretation language for review, and flagging when assessment data is incomplete before a note is signed.

What Is the Most Important Thing to Get Right About Outcome Measures in Pediatric OT?

It is not the tool selection. It is understanding what any tool's scores can and cannot tell you — and documenting that understanding explicitly in your evaluation report.

A PEDI-CAT T-score of 32 in Daily Activities is powerful evidence. But it only does its full clinical and documentation work when paired with a statement that translates that score into what it means for this child's participation in this family's daily life — and why skilled OT intervention is the appropriate and necessary response.

Outcome measures are the quantitative spine of a pediatric OT evaluation. They provide the standardized evidence that payers, IEP teams, families, and auditors need to understand a child's functional status and the progress of intervention. But they do not replace clinical reasoning — they anchor it.

In 2026, with payer scrutiny increasing and documentation standards tightening across Medicaid MCOs and IDEA programs, the practices that consistently win authorizations and survive audits are those where outcome measure selection is intentional, score interpretation is explicit, and functional documentation bridges the gap between a number on a report and a child's life.

Spry's pediatric OT platform supports outcome measure documentation with automated score tracking, baseline-to-re-evaluation progress calculation, and OTPF-4 aligned evaluation report templates — so your clinical data works as hard as your clinical reasoning. Learn more at sprypt.com.

Frequently Asked Questions

What is the most commonly used outcome measure in pediatric occupational therapy?

The PEDI-CAT is the most widely adopted functional outcome measure across pediatric OT settings in the US, valued for its broad age range (birth–20), computer-adaptive efficiency (typically under 20 minutes), excellent test-retest reliability (ICC 0.96–0.99 across all domains), and acceptance by Medicaid, commercial payers, EI Part C programs, and IDEA school settings. For motor-specific evaluations, the PDMS-2 is dominant for early childhood (birth–5;11) and the BOT-2 for school-aged and adolescent populations (ages 4–21). The SPM-2 is the primary sensory processing measure for SI intervention justification.

Can PDMS-2, BOT-2, or PEDI-CAT be administered via telehealth?

Only the PEDI-CAT and SPM-2 can be administered via telehealth in their standard formats, as both rely on parent or teacher report rather than direct performance observation. The PDMS-2 and BOT-2 are performance-based assessments requiring in-person administration with physical test materials — they cannot be reliably adapted for telehealth. For practices using telehealth for re-evaluations, the PEDI-CAT is the most practical option for tracking functional progress between in-person assessment episodes.

What PEDI-CAT score qualifies a child for OT services under Medicaid?

There is no universal PEDI-CAT score cutoff for Medicaid OT eligibility — criteria vary by state and MCO. However, T-scores below 40 (more than one standard deviation below the age mean) in any domain are generally considered clinically significant and provide strong documentation support for OT necessity. T-scores below 30 (two or more SDs below mean) indicate substantial functional delay. Always pair score data with explicit medical necessity language in the evaluation report — the score alone is not the authorization; the documented clinical argument is.

How do you document sensory integration interventions using the SPM-2?

Document SPM-2 T-scores for each sensory system and the Social Participation composite, noting which scores fall in the Some Problems (60–69) or Definite Dysfunction (≥70) range. Include scores from both the Home form (caregiver) and the School form (teacher) when both are available — cross-rater consistency strengthens the documentation argument. Then explicitly link each Definite Dysfunction score to a specific functional participation impact in the session note or evaluation report. For CPT 97533 (sensory integrative techniques), the documentation should state which sensory processing deficit is being addressed, why sensory integration techniques are the appropriate intervention, and what functional goal the intervention is working toward.

How often should pediatric OT outcome measures be re-administered?

Re-administration frequency depends on the payer, the measure, and the child's rate of change. Most Medicaid MCOs and commercial payers require formal re-evaluation (with standardized scores) at authorization renewal — typically every 90 days for outpatient Medicaid and every six to twelve months for IDEA-governed school services. The PEDI-CAT's test-retest reliability and brief administration time make it the most practical re-evaluation tool for tracking functional progress at authorization cycles. For the PDMS-2 and BOT-2, re-administration is most meaningful when at least three to six months have elapsed — shorter intervals may not detect genuine developmental change and can produce ceiling or floor effects.

References

1. Haley SM, Coster WJ, Dumas HM, Fragala-Pinkham MA, Ni PS, Kramer J, Feng T, Kao YC, Moed R, Ludlow LH. (2011). Accuracy and precision of the Pediatric Evaluation of Disability Inventory Computer Adaptive Tests (PEDI-CAT). Developmental Medicine and Child Neurology, 53(12), 1100–1106. https://doi.org/10.1111/j.1469-8749.2011.04074.x

2. Shore BJ, Allar BG, Miller PE, Matheney TH, Snyder BD, Fragala-Pinkham MA. (2019). Measuring the Reliability and Construct Validity of the PEDI-CAT in Children with Cerebral Palsy. Archives of Physical Medicine and Rehabilitation, 100(1), 45–51. https://doi.org/10.1016/j.apmr.2018.07.427

3. Dumas HM, Fragala-Pinkham MA, Haley SM, et al. (2012). Computer Adaptive Test Performance in Children With and Without Disabilities: Prospective Field Study of the PEDI-CAT. Disability and Rehabilitation, 34(5), 393–401. https://doi.org/10.3109/09638288.2011.607217

4. Haley SM, Coster WJ, Ludlow LH, Haltiwanger JT, Andrellos PA. (1992). Pediatric Evaluation of Disability Inventory (PEDI): Development, Standardization and Administration Manual. Boston, MA: Trustees of Boston University. [PEDI-CAT published 2012; updated content domains per Coster et al., PMC3631526]

5. Folio MR, Fewell RR. (2000). Peabody Developmental Motor Scales, Second Edition (PDMS-2). Austin, TX: Pro-Ed.

6. Bruininks RH, Bruininks BD. (2005). Bruininks-Oseretsky Test of Motor Proficiency, Second Edition (BOT-2). Minneapolis, MN: Pearson.

7. Parham LD, Ecker C, Miller Kuhaneck H, Henry DA, Glennon TJ. (2021). Sensory Processing Measure, Second Edition (SPM-2). Torrance, CA: Western Psychological Services.

8. Deitz JC, Kartin D, Kopp K. (2007). Review of the Bruininks-Oseretsky Test of Motor Proficiency, Second Edition (BOT-2). Physical and Occupational Therapy in Pediatrics, 27(4), 87–102. https://doi.org/10.1080/J006v27n04_06

9. AOTA. (2020). Occupational Therapy Practice Framework: Domain and Process, 4th Edition. American Journal of Occupational Therapy, 74(Suppl. 2). https://doi.org/10.5014/ajot.2020.74S2001

10. AOTA. (2019). Occupational Therapy Practice Guidelines for Sensory Integration with Children Experiencing Difficulties Processing and Integrating Sensory Information. Bethesda, MD: AOTA Press.

11. SRALAB. (2024). RehabMeasures Database: PEDI-CAT and BOT-2 Entries. Shirley Ryan AbilityLab. sralab.org/rehabilitation-measures

12. Al-Thumali F, Hay S, Beamish AW. (2025). Assessing Motor Skill Performance in Saudi School-Age Children: A Cross-National Comparison with BOT-2 Norms. HAYEF: Journal of Education, 22, 0003. https://doi.org/10.5152/hayef.2025.24003

13. Coster WJ, Haley SM, Ni PS, Dumas HM, Fragala-Pinkham MA. (2012). Assessing Self-Care and Social Function Using a Computer Adaptive Testing Version of the PEDI. Archives of Physical Medicine and Rehabilitation. PMC3631526

14. AOTA. (2026). 2026 Frequently Used CPT® and HCPCS Codes for Occupational Therapy (effective January 1, 2026). aota.org

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