OHIP Fee Schedule Changes 2026: The Specialist Revenue Leaks Hiding in Staged Rollouts

The April 1, 2026 announcement of the 2024 Physician Services Agreement (PSA) fee schedule changes felt like a clean starting line. New codes. Higher unit limits. Premiums baked in. Time to bill differently.

Except the starting line moved.

OHIP's Medical Claims Payment System was not fully updated to reflect the new rules until June and July 2026. The fee schedule changed on paper. The adjudication engine kept running on old logic. For three to four months, valid claims generated under the new rules hit a system that still enforced the old ones, and most of the rejections, underpayments, and missed premiums left no trace on your Remittance Advice.

What follows is a breakdown of how the staging gap worked, which specialty codes are most exposed, and what the resubmission windows actually look like right now.

What Changed on April 1, 2026, and Why Your June and July RA Still Matter

The 2024 PSA introduced 145 new fee codes on April 1, 2026, including new MAID codes and unbundled surgical pre- and post-operative care codes.¹ It also expanded volume limits on procedural codes, integrated specialty premiums into base tariff values, and restructured after-hours eligibility.

None of that was processable on April 1.

The Ministry published the changes through a series of INFOBulletins across April, June, and July 2026. The adjudication system received incremental backend updates to match. Until those updates landed, the system was enforcing an outdated Schedule of Benefits against claims submitted under the new one.

Two distinct revenue problems resulted:

Visible rejections. Claims using newly valid service combinations or expanded unit counts generated error codes: A3B, V41, and V46 (invalid or ineligible add-on codes) fired when the backend did not recognize newly added fee codes. I2 (Maximum Allowed Services Exceeded) triggered when unit counts hit old caps the system had not updated. D7 and I5 (Mutually Exclusive / Premium Conflict) fired when newly integrated specialty premiums collided with existing base codes under legacy exclusion logic.²

Invisible underpayments. This is the harder problem. The 2024 PSA eliminated separate relativity-adjusted percentage top-up lines on your RA and folded that value permanently into the base tariff for each code. Until the system received the updated base values in late summer, it paid the old, lower base rate. The claim processed as clean. No error code. No flag. You were underpaid 10 to 14% on that service line and the RA told you everything was fine.

New add-on premiums and realigned after-hours eligibility rules followed the same pattern. If the backend had not updated to process them, they did not generate rejections. They simply were not paid. Zero revenue, zero audit trail.

If your practice has been reviewing remittance advice only for error codes, you have been looking at roughly half the picture.

Surgical and Diagnostic Code Limits That Increased, and Why You May Still Be Capping Them

Three specialty codes are worth flagging because the failure mode is not the adjudication engine, it is your billing software.

E832 (Hand and Orthopedic Surgery, Excision of fascia for Dupuytren's, additional rays). The Schedule now allows up to 2 units per limb per day. Bilateral procedures involving more than one additional ray per limb may result in 3 or 4 units of E832, which must be flagged for manual review. Billing software that lacks multi-limb modifier support enforces a flat legacy single-limb cap or blocks entry of 3 or more units without a manual override. Claims cap automatically. No rejection fires. Revenue disappears.³

J809 (Nuclear Medicine and Cardiology, Application of SPECT). Maximum eligible units increased from 2 to 3 to support concurrent billing of J807 (resting and immediate post-stress) and J808 (delayed) on the same service date. Outdated vendor validation logic enforces Units(J809) ≤ 2, dropping or rejecting the third unit at the UI level before the claim ever reaches OHIP adjudication.

Z901 (Ophthalmology, Nasolacrimal duct irrigation). The descriptor changed from "unilateral/bilateral" to "per eye," updating the service maximum to 2. Static dropdown templates that still designate Z901 as a flat bilateral procedure lead billing clerks to submit 1 unit under legacy practice rather than 2 distinct eye units.

The reason the software layer is the hardest failure to catch: when OHIP's adjudication engine rejects a claim for hitting an old cap, the AM1 or DF code appears on your RA. When your billing software enforces the old cap before submission, no rejection is generated at all. The RA is clean. The money is gone. Without a line-by-line comparison matching clinical notes against submitted claims, the revenue leaks undetected.

This is precisely the kind of invisible drift that a billing review surfaces. If you have not had an independent set of eyes on your claims since April, our free OHIP billing review is a reasonable place to start.

The Age-Restriction Removal That Turned Valid Dementia Claims Into System Rejections

The 2024 PSA permanently removed the age restriction for dementia assessment codes A/C073, A/C074, A/C071, and A078. Effective April 1, 2026, these codes are billable for patients of any age presenting for dementia assessment, including young-onset dementia patients under 65.

The system did not reflect this until July 1, 2026.

Per INFOBulletin 260701, the updated age criteria were not hardcoded into OHIP's Medical Claims Electronic Data Transfer (MCEDT) system until that date.² Any claim submitted for a patient under 65 between April and late June generated an A2A rejection automatically, not because the code was wrong, but because the system was still enforcing the old age rule.

For geriatricians, neurologists, and psychiatrists who updated their billing practice on April 1, this means three months of valid claims may be sitting as A2A rejections.

What to do:

Do not change the fee codes. A073, C073, A074, C074, A071, C071, and A078 are correct. Do not substitute general assessment codes.
Resubmit the original claims directly. The system is now updated to accept under-65 patients.
Verify that a valid dementia-related diagnostic code (such as 290) is attached to each claim. The age-restriction removal applies specifically to dementia assessment. Claims without a clear dementia diagnostic code will continue to trigger A2A.
Resubmit backlogged April, May, and June claims before the September 2026 stale-date cut-off.

Understanding the billing mechanics behind situations like this is one of the things we wrote about in detail in what medical school did not teach you about OHIP and Medicare billing, the rules that govern when a clean-looking submission is actually wrong, and when a rejection is the system's fault, not yours.

Laboratory Transitions: Why Ordering Specialists Are Not as Insulated as They Think

Community laboratories submit L354, L358 (PSA), and L698 (HPV testing) fee codes directly. The ordering physician does not claim those fees. But that administrative distance does not remove your exposure.

The 2026-27 Schedule of Benefits for Laboratory Services restructured several codes.⁴ L698 moved to a shadow billing pathway aligned with extended HPV screening intervals, 33 to 66 months depending on age and clinical criteria, compared to historical cytology routines. L354 and L358 PSA fee codes were streamlined under updated funding pathways.

Here is where ordering specialists face real downstream risk:

Mismatched diagnostic coding. If an internist or oncologist documents a routine or uninsured indication on a requisition while billing a specialized consultation code (A135, A005) under an insured diagnostic code, the audit trail diverges. During post-payment Ministry reconciliation, mismatched clinical rationales between the lab submission and the physician's billing file can trigger clawback of the physician's professional fee, not the lab fee.

Premature interval ordering. Ordering HPV screening inside the newly extended non-billable window means the lab cannot claim the fee. The lab flags the specimen or cancels it. The result is a missed test, an unnotified patient, and potential medical-legal exposure. That consequence lands in the ordering physician's chart, not the lab's.

Requisition field errors. Outdated EMR order sets that omit mandatory qualifying criteria cause labs to refuse to process specimens under strict billing cap accountability. The downstream result is unperformed tests and no notification path to the ordering physician's office without a dedicated triage workflow.

The practical fix is to audit EMR lab requisition templates now. Ensure internal sets reference current test names, eligible intervals, and required clinical indication checkboxes. Confirm that diagnostic codes on requisitions match the primary clinical billing codes logged on your MCEDT file for the same encounter.

Why "No News" from Your Billing Software Is Not Good News

The three-layer adjudication structure behind every OHIP claim creates multiple points where revenue can disappear without generating a visible alert.

Layer one: your billing software or EMR. Client-side validation rules are designed to prevent claims from rejecting upstream. If your vendor has not patched internal rule databases following the 2026 INFOBulletins, the system either caps entered units or drops extra lines before submission. No RA rejection is generated because the claim never reached OHIP.

Layer two: internal clinic fee sheets and billing templates. Staff relying on static cheat sheets or local billing macros set to N=1 or N=2 unit maximums will continue to submit under the old limits regardless of what changed in the Schedule of Benefits.

Layer three: OHIP adjudication. If a claim makes it through the first two layers with incorrect parameters, the Ministry's Claims engine issues an AM1, DF, or manual review flag on the RA. This is the most visible failure and the easiest to catch, which makes it the layer clinics watch, while the first two layers operate silently.

The practical upshot: a clean RA is not a billing audit. It confirms only that submitted claims cleared adjudication. It tells you nothing about what was capped or dropped before submission, or what was paid at the wrong base rate with no error fired.

For a clearer picture of how EMR choices interact with billing accuracy, what your Ontario EMR choice says about your practice covers how vendor-side rule maintenance creates exactly this kind of blind spot.

The Three-Month Resubmission Window: How to Recover Money Before Stale-Date Exemptions Close

OHIP's standard 3-month stale-date rule applies to resubmissions. Because April services hit their stale-date limits in July during the system lag, the Ministry enacted special exemption policies tied to the staged rollout bulletins.

Here is where each window sits right now:

April and May code categories, largely closed. Stale-date exemptions tied to April and May bulletins have lapsed for most affected codes. Manual retroactive resubmission for missed April and May gaps faces hard stale-date rejections unless exceptional Ministry override criteria apply. Spending staff time reconstructing those files is a net-negative exercise at this point. The better move is to hardcode updated Fee Schedule Master values directly into prospective billing templates so the drift stops accumulating forward.

June code categories, closing now. Published in early June via INFOBulletin 260601, with 3-month stale-date exemptions.³ The resubmission window closes around early September 2026. Action on June-affected codes is required immediately.

July code categories, viable. Published July 13, 2026 via INFOBulletin 260701, with active stale-date exemption provisions viable through approximately mid-October 2026.² This is the window still open for dementia assessment A2A resubmissions and July-effective code limit expansions.

One important note on MADJ (Ministry-initiated retroactive adjustments): relying on Ministry-initiated retroactive adjustments as a safety net means leaving money on the table. MADJ covers only a clean subset of system-level updates. Rejected claims, unbundled codes, and missed add-ons require active resubmission. They do not auto-resolve.

The economic threshold question is worth raising honestly. Manual chart teardown, claim reconstruction, and resubmission formatting stop returning positive value when the administrative labor cost per claim exceeds the delta value of the retroactive fee increase, typically a 10 to 14% adjustment on eligible codes. For low-volume code categories, the math may not work. For high-volume specialties with months of capped J809 units or missed Z901 bilateral-to-per-eye conversions, the recovery is real.

We cover how practice-level data makes these decisions clearer in the true cost of DIY OHIP billing, specifically how the cost of internal billing errors compounds when fee schedule drift goes undetected across multiple quarters.

If this is useful in your practice, you can start with a Free OHIP billing review.

Frequently Asked Questions

Why did OHIP reject my claim with error AM1 after April 1, 2026?

AM1 (Service Limit Exceeded) fires when the adjudication engine checks submitted units against the old Schedule of Benefits cap instead of the 2026 updated limit. Because OHIP's backend system was updated incrementally through June and July 2026, claims submitted in April and May under new higher unit maximums were evaluated against obsolete rules. The adjudication engine was not wrong by its own logic, it was running on outdated parameters. The fix is to identify which claims were capped under old limits and resubmit within the applicable stale-date exemption window before September or mid-October 2026, depending on the bulletin that governs your specific code category.

Are dementia assessment codes still restricted to patients 65 and older?

No. The 2024 PSA permanently removed the age restriction for codes A/C073, A/C074, A/C071, and A078, effective April 1, 2026. The MCEDT system did not reflect this update until July 1, 2026, per INFOBulletin 260701. Claims for patients under 65 submitted between April and June generated A2A rejections because the system was still running the old age-restriction logic. Those claims are not lost yet. Resubmit with the original fee codes and confirm a valid dementia diagnostic code (such as 290) is attached. Backlogged April through June claims must be resubmitted before the September 2026 stale-date cut-off.

What is the stale-date exemption for 2026 PSA fee schedule changes?

OHIP issued temporary 3-month stale-date exemptions tied to the staged rollout bulletins to account for the system lag. June bulletin exemptions (260601) close around early September 2026. July bulletin exemptions (260701) remain viable through approximately mid-October 2026. April and May exemptions have largely lapsed. The exemptions do not apply universally, they are tied to specific code categories named in each bulletin, so matching your affected claims to the correct bulletin is necessary before resubmitting.

Did OHIP add new laboratory fee codes in 2026?

Yes. The 2026-27 Schedule of Benefits for Laboratory Services restructured several codes effective with the new fiscal year. L698 moved to an HPV shadow billing pathway aligned with extended cervical screening intervals. L354 and L358 PSA codes were streamlined under updated funding and coverage criteria. Ordering specialists do not submit these codes, but mismatched diagnostic coding on requisitions can trigger audit scrutiny on the specialist's own encounter billing. Outdated EMR requisition templates are the most common operational risk.

When did the 2024 Physician Services Agreement payment increases actually take effect?

The legal effective date was April 1, 2026. The practical processable date was June and July 2026, when OHIP's Medical Claims Payment System received the incremental backend updates that allowed the new rules to be applied during adjudication. Relativity-adjusted percentage increases, which had previously appeared as separate line items on remittance advice, were folded permanently into base tariff values under the PSA structure. Because the system lacked the updated base values until late summer, it paid the historical lower rate. Claims processed in this window appeared fully paid with no error code. The underpayment was 10 to 14% on affected service lines, with no alert generated.

If the April 1 announcement felt like a clean update and your remittance advice has looked normal ever since, the staging gap we have outlined here is worth taking seriously. A lot of the recovery we see, the 20 to 40% of revenue that comes back after a thorough claims review, starts exactly here: fee schedule changes that were announced but never fully landed in the clinic's workflow.

Book your free OHIP billing review with the Physicians First team and we will map your claims against the April, June, and July 2026 bulletins to show you exactly where the drift happened and what the resubmission window looks like for your practice.

References

Ontario Ministry of Health. "Bulletin 260316, 2024 PSA Primary Care changes for April 1, 2026." OHIP INFOBulletins 2026. April 1, 2026. ontario.ca/document/ohip-infobulletins-2026/bulletin-260316
Ontario Ministry of Health. "Bulletin 260701, PSA related fee schedule code adjustments: July updates." OHIP INFOBulletins 2026. July 13, 2026. ontario.ca/document/ohip-infobulletins-2026/bulletin-260701
Ontario Ministry of Health. "Bulletin 260601, PSA related fee schedule code adjustments: June updates." OHIP INFOBulletins 2026. June 8, 2026. ontario.ca/document/ohip-infobulletins-2026/bulletin-260601
Ontario Ministry of Health. "Bulletin 260310, Update: 2026-27 schedule of benefits for laboratory services." OHIP INFOBulletins 2026. April 20, 2026. ontario.ca/document/ohip-infobulletins-2026/bulletin-260310