OHIP Billing Guide🩺 ServicePublished 2026
A800

A800 OHIP Billing Code: Genetic Assessments Initiated by Midwives

The A800 code covers genetic assessments requested by midwives or Aboriginal midwives for complex patient cases, billed by medical geneticists.

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

1What Is the A800 OHIP Code?

What is the A800 Billing Code?

A800 is an OHIP billing code used for genetic assessments requested by midwives or Aboriginal midwives in Ontario. This service is specifically designed to handle complex, obscure, or serious patient issues that require a geneticist's expertise. Common scenarios include abnormal prenatal screenings or a family history of inherited conditions. While the request can only come from a midwife, the geneticist is responsible for both the assessment and providing a written report to the midwife and any relevant primary care provider. Failure to include the report may lead to a reduced fee.

Why Is This Code Commonly Missed?

The A800 can be overlooked if the request from the midwife is not properly documented or if the report is not shared with all required parties. Additionally, misunderstandings about the appropriate scenarios for the billing, such as complications in pregnancy or a suspected genetic disorder, may result in missed billing opportunities.

2Related Codes

CodeNameFrequencyDescription
A220Special genetic consultationAs per Genetics listingConsultation for special genetic needs requiring the expertise of a geneticist.
A223Extended special genetic consultationAs per Genetics listingExtended consultation for particularly complex genetic cases.
A225ConsultationAs per Genetics listingGeneral consultation under the Genetics specialty.
A226Repeat consultationAs per Genetics listingRepeat of a genetic consultation, as necessary.

3Eligibility Requirements

A800 Eligibility Requirements

  • Who requests it: the assessment must be requested in writing by a midwife or Aboriginal midwife. An urgent or emergency request may be initiated verbally but must subsequently be requested in writing.
  • Why: the request must be because of the complex, obscure or serious nature of the patient's problem.
  • What the service includes: the common and specific elements of an assessment. The Schedule sets no minimum duration for A800. The 75-minute and 90-minute requirements belong to the comprehensive (A801) and extended (A802) tiers, which are separate codes at higher fees.
  • Frequency: one per patient, per physician, per 24 month period.
  • Written report: the geneticist must submit findings, opinions and recommendations 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 from the midwife must be retained on the patient's permanent medical record, or the amount payable is reduced to a lesser fee. Start and stop times are not required for A800 - that requirement applies to A801.

4What Your Clinical Note Must Show

1Documentation Requirements

Two documents decide whether A800 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 A800; that requirement belongs to A801.

5Weak vs. Strong Note Examples

The strong note provides a detailed account of the service, including the time spent, reason for assessment, and distribution of findings, ensuring compliance with billing requirements.

Weak Note

Genetic assessment conducted for patient. Request came in by phone.

Nothing records the written request or the report back, and those are the two things payment turns on.

Strong Note

Genetic assessment at the written request of midwife J. Smith (request filed on the permanent record), for a family history of an inherited condition raised at the booking visit.

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

  • Written request from the midwife retained on the permanent medical record.
  • Report of findings, opinions and recommendations sent to both the midwife and the primary care physician.
  • No A800 billed for this patient by this physician in the preceding 24 months.
  • Duration not asserted - A800 carries no minimum time; had the encounter run to 75 minutes, A801 would have been the code.

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
Billing the wrong tier
Where the geneticist spent at least 75 or 90 minutes in direct contact, the comprehensive (A801) or extended (A802) code applies instead, at a substantially higher fee.
4
Requested by someone other than a midwife
A800 exists for midwife-requested assessments. A request from a physician or nurse practitioner is a different service.
Document A800 correctly — every time
Empathia's templates automatically structure your notes to capture every required element for audit-proof billing.

8Frequently Asked Questions

How many times can the A800 be billed for the same patient?
The A800 can be billed once per patient, per physician, every 24 months.
Can the A800 genetic assessment be delivered virtually?
Yes, it can be delivered virtually via video, billed as A800A.
What kind of cases typically warrant an A800 assessment?
Cases with abnormal prenatal screening, family history of genetic disorders, or consanguinity qualify.
What's a common reason a midwife might request a genetic assessment?
A midwife may request an assessment due to abnormal prenatal screening results or a family history of genetic conditions.
What documentation is required when billing A800?
The written request from the midwife and notes on time spent and findings must be documented.
How should findings from the assessment be communicated?
Findings should be written and sent to both the requesting midwife and the patient's primary care provider.
How does the complexity of the patient's problem affect the billing for A800?
The complexity necessitates a geneticist's assessment and involves an extensive evaluation.
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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