Remittance Advice · Payment-time (remittance)
OHIP explanatory code O9
Not allowed in addition to post-natal care
What O9 means
The Ministry of Health’s official wording for O9 is: “Not allowed in addition to post-natal care.”
This code appears as an explanatory code on your monthly Remittance Advice (RA). It means the claim was adjudicated — paid, reduced, or refused — for the reason below. A claim already on your RA generally shouldn't be blindly resubmitted; follow the suggested action.
How to fix O9
This explains a payment adjustment. If you believe the claim was billed correctly, file a Remittance Advice Inquiry within the deadline; otherwise no resubmission is needed.
Payment-time codes appear on the monthly Remittance Advice after adjudication. Some are informational, some explain a reduced or refused payment. Where you disagree with the outcome, the usual route is a Remittance Advice Inquiry or written inquiry — not resubmitting the same claim, which can create a duplicate.
Related codes
- O5Not allowed in addition to delivery
- O6Medical induction/stimulation of labour allowed once per pregnancy
- O7Allowed as subsequent prenatal visit-initial prenatal visit already claimed
- O8Allowed once per pregnancy
- P2Maximum fee allowed for low birth weight care
- P3Maximum fee allowed for newborn care
- P4Fee for newborn care/low birth weight care is not billable with neonatal intensive care
- P5Over-age for paediatric rates of payment
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Code meaning per Ontario Ministry of Health — Remittance Advice Explanatory Codes / Messages (March 2026). The suggested action is general information for Ontario physicians, not billing, legal, or tax advice — codes and rules change, so verify against the current Ministry of Health documents before relying on a claim.