Getting the paperwork right for infant OT referral
Most people entering this field learn about Occupational Therapy Early Intervention through their state's Part C program handbook. The handbook is accurate and useless at the same time. It tells you what to do. It doesn't tell you what happens when the insurance company denies a referral because the pediatrician wrote "global developmental delay" without any measurable milestones on the chart. I've seen this happen more times than I can count. Here's how it works in practice.
What Occupational Therapy Early Intervention actually requires
Early intervention OT for infants and toddlers isn't about teaching a baby to button a shirt. It's about assessing and supporting the neural and sensory-motor foundations that precede all later function. Feeding, visual tracking, tactile processing, postural control, joint protection, caregiver-infant interaction patterns. Those are the real targets. The evaluation framework most states follow is the ASQ-3 combined with a standardized OT instrument like the Peery Infant-Toddler Scales or the BOT-2 for the 2-to-5 age range. Some evaluators use the PEPSI or the Sensory Profile 2-Juniors as supplementary data. Pick your instruments before you start doing evaluations. Switching mid-stream because one tool doesn't fit a particular child creates inconsistency that will come back to haunt you during any review process. The biggest mistake I see new therapists make is evaluating too broadly. They try to assess everything and end up with fifteen pages of observations and no clear clinical rationale. You need a focused referral question before you walk into that home visit. What is the family concerned about? What is the pediatrician flagging? What does the birth history suggest? Everything else flows from that.
A specific problem that almost cost me a caseload
About three years ago I took a referral for an 8-month-old who had been identified with hypotonia at 4 months. The referring physician's note was two lines long. "Hypotonia. Refer for OT." The family had been told nothing else. No timeline. No goals. Just a phone call from the hospital discharge planner and a packet of papers they didn't understand. When I assessed the child, the hypotonia was real but it wasn't the primary issue. The child had significant oral sensory aversion that was causing feeding refusal, poor weight gain, and a secondary delay in postural control because the infant wasn't spending adequate tummy time due to discomfort. The hypotonia was partly deconditioning from reduced active movement, not purely neurological. This is the kind of thing that takes a while to untangle if you're looking only at muscle tone charts. The workaround I used was to reframe the referral and treatment plan around functional oral sensory integration and feeding therapy rather than generic "tone strengthening." I documented the differential carefully, including the feeding assessment data from the SFA (Sensory Feeding Assessment), and submitted it with the state's eligibility documentation. The team approved it. The child made measurable progress in both oral tolerance and trunk control over six months. If I had just written a standard tone-focused treatment plan, this kid would have been stuck in a box that didn't fit.
Get the Full Details

How to document so you don't get audited
State Part C programs require specific documentation elements. I won't pretend every state has the same form, but they all require: a measurable baseline, a clear functional deficit linked to a daily routine, a goal that identifies the specific skill, the frequency and duration of services, and a timeline for reassessment. Skip any one of those and your file is vulnerable. Write goals in observable behavioral terms. "Child will maintain midline during seated feeding for 10 minutes" is better than "Child will improve postural control." You will thank yourself six months from now when you're writing the progress report and you actually have data to pull from.
Counter-intuitive things nobody tells you
First: family involvement is not optional and it is not something you tack on at the end of a session. In early intervention, the family IS the intervention vehicle. If you're doing therapy without actively coaching caregivers in the moment, you're billing for entertainment, not outcomes. This means your session notes should reflect what the caregiver learned, not just what the child did while you were in the room. Second: standardization matters less than clinical reasoning at this age. A child who scores "delayed" on a norm-referenced tool might have zero functional impact on their daily life. Another child who scores "average" might be unable to feed themselves or tolerate a car seat strap. Don't let the test score override your clinical observation. Document both. Let the score support your narrative, not replace it.
Limitations and when this approach breaks down
Early intervention OT has real bottlenecks. Caseloads in public Part C programs often run 35 to 50 per therapist because the staffing ratios are terrible and turnover is high. You will not have time for the kind of granular assessment you want to give every child. You'll triage. Some kids will fall through the cracks because they don't present with an obvious physical disability and the referral pipeline filters them out before they reach you. Another hard limit: insurance coverage for private early intervention OT is thin. Most private plans cover pediatric OT but rarely cover the family coaching component that makes early intervention effective. If you're working in private practice with this population, you'll spend a significant portion of your week on authorization battles that have nothing to do with clinical skill. If you find yourself in that position, consider partnering with a local Early Intervention public program instead of going fully private. The pay is lower but the administrative burden drops dramatically and you retain clinical autonomy over treatment decisions.

The bottom line is that early intervention OT is less about technique and more about reading a family system quickly, identifying the functional barrier, and giving the caregivers a realistic path forward. Everything else is documentation, and the documentation is what keeps you employed.