Generic OHIP billing advice is close to useless, because the problems are specialty-shaped. An emergency physician's whole difficulty is the time band on an assessment code. An anaesthesiologist's is the extra units. A psychiatrist's is unit limits. None of those overlap.
Each page below covers the codes at the centre of that specialty, with fees from the Schedule of Benefits effective July 1, 2026, the premium mechanism that applies, and the specific things that get under-billed. Fees are the ministry's and identical across every billing provider — the differences are in eligibility rules, which we point at the Schedule for rather than paraphrase.
Hospital and shift-based
Emergency medicine
Time-band assessment codes, critical care units, and why a shift crossing midnight is two sets of codes.
SpecialtyInternal medicine
Consultations, the most responsible physician premiums and what they are worth, and the subsequent-visit week bands.
SpecialtyAnaesthesia
Basic units, time units, the extra units everyone forgets, and the H010A stipend code.
SpecialtyGeneral surgery
Special surgical consultations, cancer conferences, and after-hours premiums on call-in operating.
SpecialtyObstetrics and gynaecology
Delivery codes, the associated services assumed to be included, and the after-hours premiums deliveries qualify for.
Office and clinic-based
Family practice
Payment models first, codes second: capitation, shadow billing, enrolment and after-hours premiums.
SpecialtyPsychiatry
Unit-based psychotherapy codes, annual limits, group bands, and the virtual care tracking codes.
SpecialtyPaediatrics
The assessment ladder, the percentage premiums, and the additional-persons codes for hospital rounds.
Billing as a group or department
If several physicians in your specialty bill under a shared group number, or an administrator bills for a whole department, the specialty rules still apply but the plumbing changes — remittances arrive against the group and have to be split back to the rendering physician.
Departments and groups
Group and departmental billing, with remittances attributed back to the physician who did the work.
ProductClinics and EMRs
How IntelAGENT fits an office workflow, including recurring patients.
Not listed here?
These eight specialties have billing problems distinctive enough to be worth writing up on their own. The system is not specialty-specific — diagnostic radiology, orthopaedic surgery, cardiology, critical care and hospitalist practice all bill through it, and so do the rest. The pages above exist because of those distinctive problems, not because the others are unsupported.
If your specialty's billing has a particular quirk and you want to know how it is handled, ask us.