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Billing code

C203A — Obstetrics and gynaecology specific assessment – hospital in-patient

Obstetrics-gynaecology in-patient specific assessment

Bill when an obstetrician-gynaecologist takes a full history of the complaint and examines the affected parts of a non-emergency hospital in-patient.

Watch for: One per patient per physician per 12 months, two only for a clearly unrelated diagnosis; billed by specialty 20 only.

Code

C203A

Description

Obstetrics and gynaecology specific assessment – hospital in-patient

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

Obstetrics and gynaecology specific assessment of a hospital in-patient: full history of the complaint and detailed exam of the affected parts.

What it covers

C203 is a specific assessment by an obstetrician-gynaecologist for a non-emergency hospital in-patient (A150). It needs a full history of the presenting complaint and a detailed examination of the affected part(s), region(s) or system(s) needed to make a diagnosis, exclude disease or assess function (GP23).

Marked *: includes, where indicated, biopsy of the cervix, collection of cervical cancer screening specimens and examination of trichomonas suspension (A151, note).

Billing rules

• One per patient per physician per 12 months; two if the patient returns with a clearly different, unrelated diagnosis. Extras pay as a lesser assessment (GP23).
• An admission assessment by a physician who hasn't assessed the patient for the same illness in the past 90 days is a consultation or specific assessment; within 90 days it is a specific re-assessment. Only one such service is payable per admission when care is transferred within the hospital (GP40). A surgeon can't bill the hospital admission assessment unless it is the major pre-operative visit (SP2, §1; GP40 commentary).
• Detention (K001) is payable only after 60 minutes (GP30).
• Can be done by video only (not telephone) with K300A, for a patient with an existing relationship (Appendix J AJ2; A70). For in-patients the virtual physician must not be the MRP, no local physician with the expertise is available (documented by the referrer), and the referrer assessed the patient in person within the past 30 days (A69, rule 8).

Often billed with

• E082 (+30%) applies when the admitting MRP's admission assessment is this service; not for admissions for obstetrical delivery or day surgery (GP42).

Common rejections

• A4D: 'Invalid specialty for this service code': these codes are for Obstetrics and Gynaecology (20). Specialists must bill from their own specialty's listings (GP9).
• AT2: 'Must include video modality': this code is video-only for virtual care, so it can't be billed with K301A telephone (Appendix J AJ2).

Related codes: C204, C205, C202, A203, C122, E082

Source: Schedule of Benefits (July 1, 2026), Consultations and Visits, Obstetrics and Gynaecology (20), page A150.

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