ACAAI 2026 Preview: Sessions, Hot Topics, and What to Expect at the Phoenix Annual Meeting

What ACAAI 2026 Is, Dates, Location, and Theme

The ACAAI Annual Scientific Meeting is the flagship gathering of the American College of Allergy, Asthma & Immunology, the community-practice-focused counterpart to AAAAI's research-heavy academic meeting. ACAAI 2026 lands at the Phoenix Convention Center November 12 to 16, 2026. The 2026 theme, "Building Bridges for the Future", frames a program built around the workflow, reimbursement, and clinical evidence questions that community allergists and their practice teams face every day.

Roughly 3,000 attendees walk this floor each year: community and private-practice allergists, allergy-immunology fellows, allergy nurses, physician assistants, and practice managers. About 55% report direct purchasing authority, which makes the meeting unusually dense for vendors trying to reach the actual office decision-makers. The exhibit hall hosts roughly 80 companies across allergy diagnostics, immunotherapy, biologics, and practice management, small enough to walk in a focused afternoon and big enough to support multiple side-by-side product evaluations.

The program runs Thursday through Monday morning. Thursday is reserved for pre-conference workshops and ticketed deep-dive sessions. The main scientific program runs Friday through Sunday, with the exhibit hall open Friday and Saturday. Monday morning hosts closing plenaries and the meeting wrap. Most attendees fly in Thursday afternoon and out late Sunday or Monday, a pattern worth respecting if you are scheduling meetings, dinners, or sponsored sessions.

Five Hot Topics Driving the 2026 Program

Every ACAAI program is built around current evidence and current friction points in practice. Five themes dominate 2026, and these are the lanes where the most consequential discussions, both in plenary and in hallway conversation, will happen.

1. Oral Immunotherapy (OIT) Standardization and Reimbursement

OIT for food allergy has moved from "early-adopter community" to "mainstream allergy practice service line" over the last five years, but standardization, dosing protocols, monitoring, and, most consequentially, reimbursement remain in flux. Expect 2026 sessions on commercial payer policy variation, the role of CPT and unlisted codes, in-office vs hybrid in-office/at-home protocols, and the operational realities of running OIT in a small practice. This is one of the highest-attendance topic areas at ACAAI and a strong fit for vendors selling OIT-supporting infrastructure.

2. Biologic Sequencing for Severe Asthma and Atopic Disease

The biologic landscape in allergy and immunology has gotten dense, IL-4/IL-13, IL-5, IgE, TSLP, and now newer mechanism-of-action agents are all in play across severe asthma, chronic rhinosinusitis with nasal polyps, atopic dermatitis, and eosinophilic esophagitis. The clinical question has shifted from "should I use a biologic?" to "which biologic, in which sequence, for which patient phenotype?" Expect head-to-head and indirect-comparison data, biomarker-driven selection frameworks, and real-world payer access sessions.

3. Food Allergy Diagnosis and Treatment in Transition

Component-resolved diagnostics, basophil activation testing, and the post-LEAP early-introduction era have changed how community allergists approach food allergy. ACAAI 2026 will run dedicated programming on the diagnostic workup that actually changes management, on the role of skin testing vs IgE component panels, on emerging therapies beyond OIT (sublingual, epicutaneous, and combination approaches), and on counseling families through long-term food allergy management.

4. Environmental Allergens and Climate-Driven Disease Shifts

Pollen seasons are getting longer. Mold loads are shifting with regional weather patterns. Stinging insect ranges are expanding north. Climate-driven changes in allergen exposure are now a recurring track at ACAAI, and 2026 will continue that line, with sessions on regional allergen surveillance, immunotherapy formulation in shifting environments, and the patient communication challenges that come with longer and more unpredictable allergy seasons.

5. AI and Digital Tools for Allergy Practice

Allergy is one of the specialties where AI-assisted scheduling, charting, prior-auth automation, and patient-facing symptom tracking are landing fastest, because the practice operations are repeatable and the documentation burden is high. Expect ACAAI 2026 to dedicate sessions to AI charting tools, AI-driven prior-authorization and benefit verification, patient-app-based symptom tracking integrated with immunotherapy and biologic management, and the practical question of how a community allergy practice should evaluate new digital tools without burning quarters on pilots that don't ship. Our broader take on this lives in the AI healthcare marketing tools stack guide.

Sessions and Tracks Worth Building Your Week Around

The full program publishes through annualmeeting.acaai.org and the official meeting app, but the recurring high-value session formats are predictable enough to plan against now.

• Pre-conference workshops (Thursday): Hands-on, ticketed, capacity-limited. The OIT-focused workshop and the biologics decision-making workshop fill earliest. If they matter to your practice, register the day registration opens, not the week before the meeting.
• Friday plenary: Sets the meeting tone and almost always features a major late-breaking trial or a high-profile policy update. Worth attending live rather than catching on the meeting recording.
• Year in Review sessions: Curated summary lectures across asthma, food allergy, atopic dermatitis, and immunodeficiency. The single most efficient way for a community allergist to stay current, these typically replace four to six hours of journal reading.
• Fellows-in-Training Bowl and FIT programming: A signature ACAAI event. Even if you are not a fellow, the FIT Bowl is the highest-energy social-and-clinical event of the meeting and a useful place to spot the rising clinical leaders in the field.
• Industry-supported symposia: Breakfast and evening sessions sponsored by biologic and immunotherapy manufacturers. Pick the two or three that match your patient panel, not all eight, and stay for the case discussion at the end, which is usually where the substantive prescribing nuance lives.
• Exhibit hall theater sessions: Short, high-density product demos that are easy to dip in and out of between scientific sessions. Best used as a triage tool for which exhibit booths to visit at depth.

Who Should Attend ACAAI 2026

ACAAI is built for the working community allergist. If you own or work in a private allergy practice, solo, small group, or multi-physician, the program is engineered around the clinical and operational decisions you make every week. The mix of CME, hands-on workshops, exhibit hall product evaluation, and informal practice-owner conversation is genuinely hard to replicate elsewhere in the calendar.

Fellows-in-training should attend at least once during fellowship, ideally in the year they are interviewing for first attending positions. Community-practice partners recruit at ACAAI, and the FIT-targeted programming gives fellows direct access to practice owners who are open about the financials, workflow realities, and lifestyle of private allergy practice, context that is hard to get inside an academic training program.

Allergy nurses, physician assistants, and practice managers are explicitly part of the audience and have dedicated programming. Practice managers in particular benefit from the OIT operations, biologic prior-authorization, and billing/coding sessions, the content that actually moves practice profitability. If your practice sends only physicians to ACAAI and leaves the manager at home, you are likely losing the most actionable ROI from the trip.

If You're Exhibiting at ACAAI 2026

Industry attendance at ACAAI is concentrated and intentional. The exhibit hall is small enough that booth quality, pre-show meeting booking, and on-floor staffing discipline matter more than at the bigger pharma-heavy meetings. Vendors who win Phoenix do most of their selling before they arrive, booking 30 to 60 pre-show meetings with target practices, leading booth conversations with workflow and reimbursement evidence rather than mechanism-of-action depth, and protecting calendar slots for substantive practice-owner conversations rather than relying on walk-up traffic.

For the full vendor playbook, booth strategy, pre-show outreach cadence, ROI math, and post-show follow-up, see our companion ACAAI Conference 2026 marketing guide. For broader benchmarks on how to evaluate any clinical conference, the medical conference marketing ROI framework is a useful complement, and the pre-conference email campaigns guide covers the outreach cadence that actually books practice-owner meetings.

How to Plan Your Week (Attendee Checklist)

• Book travel and hotel by mid-September. Phoenix in November fills with multiple overlapping conventions; the official ACAAI block is your safest path to a walkable hotel.
• Register early. Member, FIT, and group rates each have early-bird windows. Group registration unlocks meaningful per-seat savings if your practice sends three or more.
• Pre-select your sessions in the meeting app. The Year in Review tracks and the workflow-focused practice management sessions overlap the biologic and food allergy late-breaking content. Build your schedule before you arrive.
• Block exhibit hall time deliberately. Two 90-minute focused passes beat five hurried 20-minute drop-ins. Identify the eight to twelve booths that match your practice's evaluation pipeline and visit those at depth.
• Send your practice manager. The OIT operations, biologic prior-auth, and billing/coding tracks are designed for the person who runs the practice, not just the person who prescribes.
• Plan one substantive dinner or breakfast. A four- or five-person practice-owner dinner with a vendor whose product you are seriously evaluating is worth more than ten brief booth conversations.

The Bottom Line

ACAAI 2026 in Phoenix is a tight, practice-relevant meeting at a moment when allergy and immunology is unusually active scientifically and unusually unsettled commercially. OIT standardization, biologic sequencing, food allergy treatment, environmental shifts, and AI-enabled practice workflows are all moving fast enough that a single five-day meeting can meaningfully change how a community allergy practice runs in 2027. Build your schedule with intent, send your practice manager, and treat the exhibit hall as evaluation infrastructure rather than entertainment, and Phoenix returns the trip.