OHIP Billing Guide🩺 ServicePublished 2026
C800

C800 OHIP Billing Code: Midwife-Requested Genetic Assessment

C800 is billed for a genetic assessment requested by a midwife or aboriginal midwife for hospital in-patients requiring a thorough evaluation.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference167.35 CAD~4 min read

1What Is the C800 OHIP Code?

C800 is an Ontario Health Insurance Plan (OHIP) billing code for genetic assessments requested by midwives or aboriginal midwives for hospitalized patients. These assessments are performed by a geneticist in response to complex, obscure, or serious clinical findings during antepartum or postpartum periods.

The use of this code typically arises following abnormal prenatal results or unexpected findings in a newborn, emphasizing the importance of specialized genetic insights. Despite these clinical needs, the code can be overlooked due to the specificity of its application criteria and the busy nature of patient care settings.

2Related Codes

CodeNameFrequencyDescription
A800Midwife or Aboriginal Midwife-requested genetic assessmentGoverned by the special listing and General Preamble assessment rulesEquivalent service rendered outside of hospital in-patient settings.
A220Special genetic consultationSubject to specific or special rules as noted in the Genetics (22) listingA comprehensive consultation involving detailed assessment by a geneticist.
A223Extended special genetic consultationSubject to specific or special rules as noted in the Genetics (22) listingAn in-depth consultation exceeding typical genetic assessments.
A225ConsultationSubject to arrangement and agreement between physician and ministryGeneral geneticist consultation without midwife initiation.
A226Repeat consultationSubject to the same schedule rules as an initial consultationFollow-up consultations for ongoing cases.

3Eligibility Requirements

C800 Eligibility Requirements

C800 is the same service as A800, rendered to a hospital in-patient (non-emergency hospital in-patient services - see General Preamble GP40 to GP48). Outside hospital in-patient settings, bill A800.

  • Who requests it: a midwife or Aboriginal midwife, in writing, because of the complex, obscure or serious nature of the patient's problem. An urgent request may start verbally but must be put in writing.
  • What the service includes: the common and specific elements of an assessment. The Schedule sets no minimum duration for C800, and no start-and-stop-time entry is required. The 75-minute and 90-minute requirements belong to the comprehensive and extended tiers, which are separate codes.
  • Frequency: one per patient, per physician, per 24 month period.
  • Written report: findings, opinions and recommendations must go in writing to both the midwife or Aboriginal midwife and the patient's primary care physician or nurse practitioner, if applicable, or the amount payable is reduced to a lesser fee.
  • Medical record: the written request must be retained on the patient's permanent medical record, or the amount payable is reduced to a lesser fee.

4What Your Clinical Note Must Show

1Documentation for C800 Billing

Two documents decide whether C800 is paid in full:

  • The midwife's or Aboriginal midwife's written request, retained on the patient's permanent medical record.
  • The written report of findings, opinions and recommendations, sent to both the midwife and the patient's primary care physician or nurse practitioner, if applicable.
  • No start-and-stop-time entry is required for C800; that requirement belongs to the comprehensive tier.

5Weak vs. Strong Note Examples

The strong note succeeds because it includes specific documentation of the time spent, maintains a formal written report, and ensures adherence to billing requirements. The weak note lacks time documentation and fails to provide necessary written communication, risking a fee reduction.

Weak Note

Consultation performed on in-patient. Findings given verbally to the midwife.

Neither the written request nor a written report is on file, and those are the two conditions of payment.

Strong Note

Genetic assessment of an admitted patient at the written request of midwife J. Smith (request filed on the permanent record), following an abnormal prenatal screening result.

History, examination and risk discussion completed on the ward; written findings and recommendations sent to the midwife and to the patient's family physician.

  • Patient is a hospital in-patient, which is what makes C800 rather than A800 the correct code.
  • Written request from the midwife retained on the permanent medical record.
  • Report sent to both the midwife and the primary care physician.
  • Duration not asserted - C800 carries no minimum time requirement.

6Common Reasons This Code Is Missed

1
Written request not retained
The midwife's written request must be on the permanent medical record. Without it the amount payable is reduced to a lesser fee.
2
Report not sent to both parties
The findings must go in writing to the midwife and to the patient's primary care physician or nurse practitioner where there is one. Sending it to only one reduces the fee.
3
Wrong setting
C800 is for non-emergency hospital in-patient services. For the same service outside that setting, A800 applies.
4
Overlooking the 24-month rule
A second C800 for the same patient by the same physician within 24 months is not eligible for payment.
Document C800 correctly — every time
Empathia's templates automatically structure your notes to capture every required element for audit-proof billing.

8Frequently Asked Questions

How often can C800 be billed for the same patient?
C800 can be billed once per patient, per physician, every 24 months.
What distinguishes C800 from typical genetic consultations?
C800 is specific for cases where a midwife requests an assessment due to complex issues, unlike general consultations.
What types of clinical findings necessitate a C800 genetic assessment?
Abnormal prenatal results or unexpected newborn findings typically prompt a C800 assessment request.
Can C800 be billed for an outpatient genetic assessment?
No, C800 is designated for hospital in-patient settings. Use A800 for outpatient scenarios.
What should be included in the geneticist's report?
The report should detail the geneticist's findings, opinions, and recommendations, distributed in writing to all relevant parties.
How is hospital admission linked to C800 eligibility?
The patient must be a non-emergency hospital in-patient for C800 billing, as the setting is vital for eligibility.
If the written request is not retained, can the service still be billed under C800?
Without retaining the written request, the payment may be reduced, impacting the billing outcome.
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.
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