OHIP explanatory code SN

What SN means

The Ministry of Health’s official wording for SN is: “Multiple Surgical Anaesthesia. Documentation of Separate Surgeries Same Day/Same Patient Required.”

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 SN

Multiple surgical anaesthesia requires documentation of separate surgeries on the same day for the same patient - submit the supporting operative/anaesthetic records with a Remittance Advice Inquiry or as directed by your claims office.

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

• SCNot allowed, major pre-operative visit already claimed
• SDNot allowed, Team/Assist Fee already claimed
• SEMajor pre-operative visit previously paid and admission assessment previously paid-surgery fee reduced by the admission assessment
• SFMost Responsible Physician (MRP) visit not allowed during post- operative period-surgical fee adjusted
• SVMRP visit not allowed during post-operative period-fee reduced to subsequent visit fee
• SWIntensive Care Unit per diem code paid to another physician-MRP subsequent visit reduced to subsequent visit
• SXICU Per Diem code Paid To Another Physician, MRP Premium Not Allowed
• T1Fee allowed according to surgery claim