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Billing code

C412A — Gastroenterology hospital subsequent visit – first five weeks

Gastroenterology hospital visit, weeks 1–5

Bill for a gastroenterologist's routine hospital visit after the admission assessment, during the first five weeks after admission.

Watch for: Only one per patient per day; extra visits aren't paid.

Code

C412A

Description

Gastroenterology hospital subsequent visit – first five weeks

FHO+ basket

Not in the FHO+ base rate basket (Schedule 2 or 2B).

Effective date

Apr 1, 2026

Termination date

No end date

Explanation

Updated October 26, 2026

A routine in-patient follow-up visit by a gastroenterologist during the first five weeks after admission.

What it covers

Subsequent visits are routine hospital assessments after the admission assessment (GP43). C412 covers the first five weeks after admission (A106).

Attending surgery at the patient's request without assisting, and each physician's visit in multidisciplinary care, also count as subsequent visits (GP43).

Billing rules

• One per patient per day for the first 5 weeks after admission; extras are not payable (GP43).
• If the patient was referred to you in hospital, the date you first assessed them is the 'admission date' for choosing the code; if care was transferred, count from the actual admission date (GP43).
• As MRP, add E083 (+30%), or E084 (+45%) on Saturdays, Sundays and holidays; one per patient per day (GP47).
• Detention (K001) may follow only after 30 minutes for a subsequent hospital visit (GP30).
• Not on the Appendix J virtual care lists, so not payable by video or phone (Appendix J AJ1–AJ2).

Often billed with

• E083 or E084 MRP premium when you are the MRP (GP47).

Common rejections

• AM1: OHIP describes this as 'Service Limit Exceeded': more than one subsequent visit for the patient that day (GP43).

Related codes: C417, C419, C418, C121, C122, E083, E084

Source: Schedule of Benefits (July 1, 2026), Consultations and Visits, Gastroenterology (41), page A106.

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