7 ABA Session Notes Examples: Key Components and Best Practices for BCBAs

An ABA session note is the written record of one ABA therapy session, made by the person who ran it. The seven ABA session notes examples are complete, fictional notes for the sessions you document most.

It's 6:40 on a weeknight, and you've just run three sessions in a row. Your 3:00 note still says "had a good session" and little else. Whoever reviews that note later wasn't in the room, so they'll judge the session by what's on the page.

This article will help you write complete ABA session notes for any session in your ABA practice.

Key takeaways

• Write down what you saw and counted: A payer pays only for what the note shows, so record counts and prompt levels, and leave out guesses about how the client felt.
• Make each note match its claim: Check each note's times and codes against the schedule and the claim, and its goals against the treatment plan, since federal Medicaid audits keep finding these mismatches.
• Behavior technicians and BCBAs document different work: A behavior technician records what happened when the plan ran, and a BCBA records the clinical decisions behind the plan.
• Start from a draft and check it: Alpaca Health drafts your session documentation with AI session notes for you to review and sign, and its team handles the credentialing and billing behind each claim. If you own or plan to open an ABA practice, see how Alpaca Health works.

What are ABA session notes?

ABA session notes are the clinical and billing record of a single ABA therapy session. Each note ties one service on one date to the treatment plan and shows which programs ran and how the client responded. Payers and auditors read the same note your team does, sometimes years later, so it has to make sense to someone who wasn't there.

Your data sheet holds every trial from the session, and the note sums up what those trials show. For example, the note might say the client got 9 of 10 right with no prompts, up from 7 of 10 the session before.

Keeping notes and data in the same ABA data collection software makes them easier to check against each other.

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Why are ABA session notes important?

ABA session notes are important because each one is the payer's only proof that a billed service happened the way the claim says. Federal Medicaid law requires you to keep records that "fully disclose the extent of the services" you provide. If a required detail is missing, the reviewer treats that part as undocumented.

The Office of Inspector General at the Department of Health and Human Services (HHS-OIG) audited Indiana's Medicaid ABA payments. It reviewed 100 sampled months of claims, each for one child. Session notes failed federal and state documentation rules in 95 of those months.

The Indiana audit estimated at least $56.5 million in improper payments and recommended that Indiana refund $39.4 million, the federal government's share. Every sampled month in that audit included at least one improper or potentially improper payment. The same was true of every sampled month in the later Wisconsin audit and Colorado audit.

Section 3.11 of the Ethics Code for Behavior Analysts from the Behavior Analyst Certification Board (BACB) also calls for "detailed and high-quality documentation" of your work. Before you sign a note, read it as a stranger would and check that they could tell what happened.

Key components of ABA session notes

The key components of an ABA session note are the details a reviewer uses to match it to its claim and treatment plan. Payers word their rules differently, but they check the same core elements.

Centene's ABA documentation policy for its affiliated health plans, effective October 1, 2026, lists them. State Medicaid rules cover much of the same ground.

• Identifiers: The top of the note names your ABA practice, the rendering provider who delivered the service, and the client, with a birth date or ID number.
• Date and clock times: The note gives the date, the exact start and end times, and every pause, such as a 4:00 to 4:15 snack break.
• Location and service code: The setting and the CPT code (the five-digit billing code on the claim) let a reviewer match the note to its claim.
• Everyone present: The note lists who took part and their relationship to the client, without personal details about anyone else.
• Procedures and responses: Each program appears under the same name the treatment plan uses, with the client's responses in counts, durations, or trial results.
• Progress, barriers, and plan: The note compares today's data with plan goals, names what got in the way, and says what happens next.
• Signature and credential: The person who delivered the service signs with their credential after the session ends and before the claim goes out.

A note becomes billable when it supports the exact code and the number of 15-minute units on the claim. The 2026 CPT descriptors are the official wording for each code. Under them, 97153 is treatment by protocol, which a technician delivers under the direction of a qualified professional, usually the BCBA.

Its partner code, 97155, is treatment with protocol modification. That means the qualified professional fixes problems with the treatment protocol while the client is present. So a 97155 note has to show the protocol work.

7 ABA session notes examples

The seven examples cover a routine session, a good session, problem behavior, a session cut short, a mastered goal, BCBA telehealth, and parent training. Each one is a complete note for a fictional client, with invented data and staff names, and uses the 2026 CPT descriptors.

Example 1: A routine skill-building session, annotated

An RBT ran this fictional two-hour clinic session, which was billed as 97153.

Almost every line in this note gives a reviewer something to check. The hand-washing line can name the one step that still needs help because the skill was broken into a task analysis ahead of time.

Example 2: A session that went well

This fictional note covers a clinic session in which the client's manding (requesting) improved.

• Session details: Priya S., RBT, ran a 97153 session with the client at the clinic on October 7 from 9:00 to 11:00 a.m.
• Manding (goal 1.3): The client made 14 independent mands of 2 to 3 words, up from an average of 6 over 5 sessions.
• Generalization: Two mands went to a front desk staff member, the first recorded with anyone besides the RBT or a parent.
• Behavior and plan: The RBT recorded no target behaviors, and the BCBA reviews the generalization data on October 13.
• Signature: Priya S., RBT, signed the note electronically at 11:06 a.m.

A reviewer can check each number in this note, such as "14, up from an average of 6," against the data sheet.

Example 3: A session with problem behavior

This fictional note covers an in-home session in which the client screamed after a preferred item was removed.

• Session details: Marcus T., RBT, ran a 97153 session in the family home on October 8 from 3:30 to 5:30 p.m.
• Screaming: The RBT recorded 4 episodes of 10 to 25 seconds, as the behavior plan defines screaming.
• Pattern: Each episode came within 30 seconds of the tablet being removed, which fits the access function named in the plan.
• Planned response: The RBT kept the tablet off and prompted "more tablet, please," which the client used after 3 of 4 episodes.
• Outcome: The client returned to table work within 2 minutes each time, and no one was injured.
• Plan and signature: The RBT sends the episode data to the BCBA before October 14, and Marcus T., RBT, signed at 5:41 p.m.

The note counts and times each episode. It also ties the pattern to the function of the behavior named in the plan, which shows the RBT's response was planned.

Example 4: A session cut short

This fictional note covers a two-hour clinic session that ended after 45 minutes.

• Session details: Jordan P., RBT, was scheduled for a 97153 session at the clinic from 9:00 to 11:00 a.m. on October 9 and delivered 9:00 to 9:45 a.m.
• What happened: The client followed 3 of 12 table instructions, so the RBT moved to natural environment teaching per the plan, where the client completed 4 of 6 mand opportunities.
• Early end: The client said "tummy hurts" twice at 9:45 and held his stomach, so the RBT ended the session, told the BCBA, and called his mother.
• Units: The note supports 3 units for 9:00 to 9:45, and the rest of the scheduled time isn't billed.
• Plan and signature: The RBT repeats the preference assessment next session, and Jordan P., RBT, signed at 10:02 a.m.

You can usually still bill a short session for the time delivered if the note shows when it stopped and why. The switch to natural environment teaching reads as a planned step because the plan called for it.

Example 5: A session where a goal was mastered

This fictional note records the session in which a client met a mastery criterion.

• Session details: Jordan P., RBT, ran a 97153 session with the client at the clinic on October 9 from 1:00 to 3:00 p.m.
• Emotions in pictures (goal 3.2): The client answered 9 of 10 trials independently, after 9 of 10 and 10 of 10 in the two prior sessions, one of them run by Priya S., RBT.
• Mastery: That meets the plan's criterion of at least 9 of 10 across 3 consecutive sessions with 2 different staff members.
• Plan and signature: The data went to Dana R., BCBA, for review before maintenance probes start, and Jordan P., RBT, signed at 3:12 p.m.

A mastery note states the plan's criterion and the data that met it, then leaves the next decision to the BCBA. If the note said only "goal achieved," a reviewer couldn't check it against the plan.

Example 6: A BCBA telehealth session with a protocol change

In this fictional session, a BCBA joined by secure video from her office and changed one of the client's protocols.

• Session details: Dana R., BCBA, delivered 97155 by video from her office on October 9 from 4:00 to 4:32 p.m., with the client, RBT, and mother at home.
• Connection: Cameras and audio worked except for a 2-minute freeze at 4:12 p.m., which isn't billed, so the note supports 2 units.
• Clinical issue: Two-step instructions have held at 5 of 8 independent for 4 sessions in a row.
• Protocol change: The BCBA changed the step-2 prompt from gestural to a 2-second time delay and directed the RBT through 6 trials, with 4 of 6 independent.
• Plan and signature: The RBT runs the new procedure for 3 sessions before the BCBA reviews it, and Dana R., BCBA, signed at 4:40 p.m.

Telehealth notes should say where each person was and whether cameras and audio worked. For example, Centene's policy asks for a HIPAA-compliant platform with the provider's camera on and audio working. Check your payer's telehealth rules before you bill 97155 by video.

Example 7: A parent training session

This fictional note covers a BCBA teaching both parents a bedtime routine at home.

• Session details: Dana R., BCBA, met both parents at home for a 97156 session on October 10 from 5:00 to 6:00 p.m., and the client joined at 5:40 p.m.
• Caregiver goal 2: The BCBA modeled the 4-step bedtime visual schedule with the client and had each parent rehearse it.
• Caregiver fidelity: The mother completed 4 of 4 steps on her second try, and the father went from 3 of 4 to 4 of 4 after feedback.
• Barrier and plan: Bedtime overlaps with a sibling's bath, so the parents chose a 7:30 p.m. start and will log it each night.
• Signatures: Dana R., BCBA, signed the note, and both parents signed to show they took part.

Code 97156 covers coaching caregivers to carry out treatment protocols, so the note shows how each parent performed. Auditors in Indiana and Wisconsin flagged 97156 notes that recorded only a general discussion with parents.

How do RBT notes and BCBA notes differ?

An RBT's session note records what happened when the plan ran, and a BCBA's note records the clinical decisions that shape the plan. The notes split the same way the RBT and BCBA roles divide the work.

What goes in an RBT's session note?

An RBT's session note records which programs ran and how the client responded, with counts and durations for any behavior events. The note reports on a plan the BCBA already wrote. If something needs to change, the RBT flags it for the BCBA to decide.

The BACB's RBT Ethics Code says RBTs "accurately complete all required documentation," such as client data and billing records. The RBT Handbook requires supervision for at least 5% of the hours an RBT spends providing services each calendar month. One of the supervision activities it lists is reviewing daily progress notes and data sheets.

Naming the supervising BCBA on each note also helps. Auditors in Indiana and Colorado couldn't tell from many notes whether technicians were properly supervised.

What does a BCBA's session note add?

A BCBA's session note adds the clinical reasoning behind the session. Under the 2026 descriptor for 97155, that means the problem you saw, the protocol change you made, and why you made it.

When a 97155 note said nothing changed, HHS-OIG counted it as not supporting the code. Wisconsin's audit found that problem in 75 of 95 sampled months that included 97155.

Payers don't all read 97155 the same way. For example, Centene's policy accepts a written reason that no change was needed. The note has to list the protocol components you reviewed and the clinical reason to keep them.

The policy also says technician supervision alone or a team meeting doesn't count as protocol modification.

The AMA's new CPT code set takes effect on January 1, 2027. It replaces "protocol modification" with "analysis," narrows 97155 to directing a technician, and adds 97173 for treatment a BCBA delivers directly.

The ABA Coding Coalition's 2027 coding guidance says the BCBA's analysis must be documented clearly in the session note. Update your templates once your payers publish their 2027 policies.

Who signs each note?

The person who delivered the service signs the note for it. Indiana officials told HHS-OIG that RBTs must sign the session notes for the services they provide. At one Indiana facility, a BCBA signed notes for another BCBA's services, often months after the claims went out.

Electronic signatures are fine where your state and payer allow them. In Colorado, though, one facility's billing staff kept a scanned copy of each staff member's signature and pasted it onto notes before claims went out. Check that your ABA EHR software time-stamps each signature and shows it was applied electronically.

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Best practices for writing ABA session notes

Describe only what you saw and counted, and write each note before the details fade.

How do you word an ABA session note?

Use plain, neutral words that describe what the client did. A reader can check that kind of description against your data, but they can't check an interpretation.

• Describe what a camera could record: Write "hit the table 3 times," and leave out "was angry" unless you're quoting the client.
• Keep it short and professional: Skip slang, exclamation points, and filler, and mention play or meals only as part of treatment.
• Name the procedure: Write "first/then visual" or "token board" instead of "tried some visuals," and pair it with the client's response.
• Stay neutral: Words like "manipulative" and "non-compliant" judge the client's intent, so describe the action, how often it happened, and how long it lasted.
• Use terms a payer knows: Write "clinic-based session" instead of a room nickname like "the Discovery Room," which means nothing to a payer.

Notes worded this way are easier for a reviewer to check line by line.

"Had a good session" and "was non-compliant" both fail because neither gives a reviewer a behavior, a number, or a procedure to check. In Indiana, HHS-OIG found notes where the only description besides the data was the child's mood or what the child ate.

When should you write and sign an ABA session note?

Draft the note during natural breaks, finish it right after the client leaves, and sign it after the session ends and before the claim goes out. A note written from memory that evening takes longer and loses detail.

• Open the treatment plan first: Pull up the active plan before the session so you can name programs and goals the way it does.
• Sign only after the session ends: Colorado's audit found electronic notes signed as much as 1 hour and 44 minutes early. HHS-OIG said that calls into question whether the full session happened.
• Finish before the claim goes out: Indiana's Medicaid rules require documentation at the time of service and before the claim is submitted.
• Let templates hold the structure only: Required fields help you catch missing details, but CMS guidance says to turn off auto-fill. It also says to watch for cloned notes that look identical from visit to visit.

If your notes keep sliding into the evening, find the part that takes longest. Then set up your template or data sheet so you can capture that part during the session.

How do you meet ABA session note insurance requirements?

To meet insurance requirements, each ABA session note has to show medical necessity and support the exact code and units on the claim. Medical necessity means the service is clinically needed under the payer's definition.

The reviewer also checks the note against the approved treatment plan. That's why the progress line, where the note shows the service is still helping, matters as much as the data.

Federal auditors keep finding notes that don't match their claims. In Colorado, notes didn't support the billing code in 72 of 100 sampled months, or the units paid in 63.

Some payer policies now set a minimum for BCBA protocol work. Centene's policy says protocol modification should run at least 2 hours a week or 10% of direct service hours, whichever is greater. Under that policy, any 97153 units the protocol work doesn't support can be denied or recouped (taken back after payment) across the whole six-month authorization.

A regular self-audit can catch these problems before a payer does. CMS suggests having someone other than the person who wrote the notes pull a random sample of charts. Then fix the problems that keep showing up.

You can also check each note against its claim line before you submit it. Make that check a regular step in your revenue cycle management, the work of billing and collecting payment.

Common ABA session note mistakes to avoid

The same few ABA session note mistakes show up in all three state audits. Most are easier to avoid when you write the note during or right after the session.

• Copy-pasting yesterday's note: Indiana's auditors found handwritten notes, and even an RBT's signature, photocopied from day to day.
• Data that contradicts the narrative: "Engaged well throughout" next to 9 refused trials on the data sheet tells a reviewer the note wasn't written from the session.
• Billing the schedule instead of the session: Notes that didn't support the units paid turned up in 52 of 100 sampled months in Indiana and 77 in Wisconsin.
• Leaving breaks inside billed time: Indiana's auditors flagged possible nontherapy time, such as meals and naps, in 97 of 100 sampled months.
• Describing recreation instead of treatment: Colorado's auditors found notes about recreation or day care without details of ABA techniques in 88 of 100 sampled months.

Check each note for these mistakes before you sign it, because they're harder to fix once a payer asks for records.

How can Alpaca Health help with session notes in your ABA practice?

Alpaca Health's AI notetaker drafts the documentation for each ABA therapy session, on the same platform where your team collects data and tracks progress. Whoever ran the session reviews the draft, fixes anything that doesn't match what happened, and signs it. Your ABA practice owns its client records, treatment plans, and session data.

Alpaca Health's team also credentials you under its existing insurance contracts and handles billing and payroll. It sends guaranteed payouts every two weeks, even when an insurer delays, denies, or claws back a payment. The person who signs each note is still responsible for its accuracy.

If you'd like to see how AI session notes would fit your ABA practice, you can book a demo with our team.

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Frequently asked questions about ABA session notes

What should you not write in an ABA session note?

Don't write guesses about the client's feelings or intent, such as "frustrated" or "stubborn," and describe what the client did instead. Skip slang and room nicknames, and don't copy text from an earlier note. Judgment words also work against the client dignity that the BACB's ethics codes ask you to protect.

How long should an ABA session note be?

An ABA session note should be long enough to back every billed unit with a description of what happened. Indiana's Medicaid rules don't set a length. Even so, HHS-OIG found that notes summing up 8 hours of therapy in three or four sentences lacked enough detail.

Do the RBT and BCBA each write a note when the BCBA joins a session?

Yes. The RBT's 97153 note covers the whole session, and the BCBA's 97155 note covers the minutes spent directing the RBT and changing the protocol. If your payer allows both codes at once, both notes should match the times in your ABA scheduling software.

How do you correct a mistake in a signed ABA session note?

Write a dated addendum that points to the original note, sign it with your name and credential, and leave the original in place. Centene's policy says an addendum can clarify or correct a note but shouldn't make a major change to the service it describes. If the error affected a claim, the behavior analyst code of ethics asks you to tell the relevant parties, fix it promptly, and document what you did.

Can you use AI to write ABA session notes?

Yes, if the tool is HIPAA compliant and the person who ran the session reviews and signs the draft. The signature makes the note theirs, so every time and number in an AI-drafted note has to match what happened. If you want to see Alpaca Health's AI session notes on the same platform as your data collection, you can schedule a demo.