OHIP Billing Guide🩺 ServicePublished 2026
C203

C203 OHIP Billing Code: Specific Assessment for In-Patients

The C203 billing code is used by obstetrics and gynaecology specialists conducting specific assessments for hospital in-patients. This code allows billing for a defined obstetric or gynecological issue addressed during a patient's hospital stay.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference62.65 CAD~3 min read

1What Is the C203 OHIP Code?

What is C203?

The C203 billing code is designated for specific assessments conducted by obstetrics and gynaecology specialists for hospital in-patients. This code is applied when a physician evaluates a specific obstetric or gynaecological problem distinct from the initial consultation and during an in-patient's hospital stay. Such assessments might include evaluating specific issues like bleeding or particular findings that arise once the patient is already admitted.

This code is often missed because the nuances of assessing in-patients can overlap with initial consultations or general assessments. Proper documentation is critical to ensure compliance and proper billing under the OHIP guidelines.

2Related Codes

CodeNameFrequencyDescription
A203A203 Specific assessmentCommonly used for in-office assessments.Specific assessment delivered outside hospital in-patient settings.
C204C204 Specific re-assessmentUsed for follow-up assessments.Specific re-assessment in hospital for ongoing obstetric or gynaecological issues.
A204A204 Partial assessmentLess comprehensive assessment.Partial assessment conducted in office settings.
A935A935 Special surgical consultationMore comprehensive, higher fee, for surgical considerations.Used for special surgical consultations requiring significant evaluation.

3Eligibility Requirements

Eligibility Requirements

According to the OHIP Schedule of Benefits, the C203 code is used for specific assessments conducted on hospital in-patients in the field of obstetrics and gynaecology.

  • Cervical cancer screening specimen collection is considered part of the routine assessment if a pelvic exam is a typical component of that service. If performed outside a hospital or ICHSC, add-on codes E430 or E431 may be billed as well.

  • For virtual services, C203 can be billed as C203A under the 'VIDEO ONLY' criteria and is not eligible for phone consultations.

  • Documentation must include the start and end time of the service as per GP7. This specific time recording is mandatory for payment and verification.

Always ensure compliance with the General Preamble rules and verify the specific rules applicable to each billing situation.

4What Your Clinical Note Must Show

1Documentation Requirements

For OHIP billing, specific documentation must be maintained:

  • Record the start and end time of the service.
  • Include a full history with presenting complaint, family medical history, past medical history, social history, and functional inquiry.
  • Document examination details, excluding breast, genital, or rectal exams unless indicated.

5Weak vs. Strong Note Examples

The strong note is successful because it provides comprehensive detail, background, context, and adheres to documentation requirements. The weak note fails by lacking depth and specific information regarding the assessment.

Weak Note

Examined patient for gynaecological issues; discussed findings briefly.

Strong Note

Conducted a specific assessment on 35-year-old female in-patient presenting with bleeding. Full gynaecological examination performed.

History: No prior related complaints or family history. Social history and medical history thoroughly reviewed.

Assessment included pelvic examination with findings documented. Specific instructions given for ongoing monitoring.

  • Start time: 09:00 AM; End time: 09:45 AM
  • Detailed patient notes saved in electronic medical records.

6Common Reasons This Code Is Missed

1
Improper Documentation
Failure to accurately document the specifics of the assessment, including time and detailed examination notes, can lead to missed billing opportunities.
2
Virtual Biling Errors
Mistakenly billing C203 for phone consultations when only video consultations are permitted under C203A criteria.
3
Assumption of Included Services
Believing that cervical cancer screening always requires separate billing without understanding the inclusion rules in routine assessments.
4
General vs. Specific Assessment Confusion
Confusion between using a general assessment code versus the specific C203 code due to similar presenting issues.
Document C203 correctly — every time
Empathia's templates automatically structure your notes to capture every required element for audit-proof billing.

8Frequently Asked Questions

What is the fee for billing C203?
The fee for C203 is CAD 62.65, a flat rate for specific assessments.
Can I bill C203 for both video and phone consultations?
No, C203 is only eligible for video consultations as C203A under the virtual delivery criteria.
How is C203 distinct in obstetrics and gynaecology?
C203 is specifically used for assessing defined obstetric or gynaecological problems during in-patient hospital stays.
What types of issues qualify for C203 in obstetrics?
Assessments such as evaluating bleeding or specific findings during inpatient stays qualify for C203.
When should a specific assessment be billed instead of a general assessment?
When addressing a distinct obstetric or gynaecological problem unrelated to the initial consultation.
What scenarios lead to patient eligibility for C203?
Patients must be in-patients with a distinct issue arising post-admission, like new bleeding or symptoms needing evaluation.
Can cervical screenings be billed separately during a specific assessment?
Generally included unless done outside the hospital; in such cases, add-on codes may apply.
Is documentation necessary for the start and end time of service?
Yes, this is mandatory for billing and verification under OHIP guidelines.
Disclaimer: This article is intended as a general educational resource for physicians and billing staff. It does not constitute billing advice or a definitive interpretation of the OHIP Schedule of Benefits. Always verify current billing codes, eligibility criteria, and documentation requirements directly against the official Schedule of Benefits or consult with a qualified medical billing specialist.
@2026 Empathia AI, Inc. All rights reserved.