OHIP Billing Guide🩺 ServicePublished 2026
A111

A111 OHIP Billing Code: Complex Medical Re-Assessments for Critical Care Patients

The A111 billing code covers complex medical specific re-assessments performed by critical care specialists under OHIP, crucial for post-ICU patient follow-ups.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference83.40 CAD~3 min read

1What Is the A111 OHIP Code?

The A111 code is used for billing complex medical specific re-assessments by critical care specialists when managing patients with intricate conditions. This applies to out-patient settings where a reassessment requires comprehensive review due to the complexity or severity of a patient's condition.

Typical scenarios include follow-ups for post-ICU patients dealing with ongoing respiratory failure, tracheostomy maintenance, or other multi-system issues stemming from prolonged critical illness. It is crucial for facilitating in-depth evaluation beyond regular assessments.

A common hurdle in billing this code is ensuring the thorough documentation reflecting the complexity and necessity of a more detailed re-assessment compared to a standard one.

2Related Codes

CodeNameFrequencyDescription
A713Medical specific assessmentN/AUsed for initial assessments requiring specific attention within Critical Care Medicine.
C713Medical specific assessmentN/AHospital in-patient equivalent of A713 for Critical Care Medicine.
A114Medical specific re-assessmentN/ARe-assessment that doesn't reach the complexity needed for A111 billing.
C111Complex medical specific re-assessmentN/AIn-patient version of A111, allowing for complex re-assessment billing in a hospital setting.

3Eligibility Requirements

To be eligible to bill under A111, a physician must perform a complex medical specific re-assessment. This service is defined by the nature of the patient's condition, which is complex, obscure, or serious, necessitating a comprehensive re-evaluation.

Eligibility conditions specify that A111 may be billed a maximum of four times per patient, per physician, over a 12-month period. Practitioners must adhere to these limits, as services rendered beyond this threshold will be adjusted to a lower assessment fee.

Whenever A111 is billed, the time when the service started and ended must be documented on the patient's permanent record, a prerequisite for payment. The code can also be rendered virtually as A111A, through video or telephone interactions.

4What Your Clinical Note Must Show

1Time Recording

The physician must document the timing of the service to ensure the billing of A111 is valid.

  • Record start and end times of the service on the patient's record.

5Weak vs. Strong Note Examples

The strong note includes detailed clinical observations, a clear start and end time of the service, and specific medical decision points that illustrate the complexity of the re-assessment, unlike the vague and general weak note.

Weak Note

Follow-up visit after ICU stay. Patient improving. Adjustments made to medications.

Strong Note

Comprehensive reassessment of a post-ICU patient with persistent respiratory issues. Evaluated tracheostomy care and adjusted ventilator settings. Examined multi-system sequelae from prolonged critical illness, including renal function and neurological status.

  • Time noted: Service began at 09:05 and ended at 09:45.
  • Patient's respiratory status thoroughly reviewed with new ventilatory plan.
  • Analysed recent lab results for renal and liver function.

6Common Reasons This Code Is Missed

1
Lack of Complexity Documentation
Failing to clearly document the complex nature of the re-assessment can result in denial.
2
Over Frequency Limit
Submitting claims above the allowed frequency of four per year per patient per physician can lead to adjustments to lower fees.
3
Incomplete Time Recording
Not recording the start and end times of the service on the medical chart can invalidate the claim.
Document A111 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 A111?
The A111 billing code has a flat fee of CAD $83.40.
What types of cases in critical care warrant billing A111?
Cases such as post-ICU patients with persistent respiratory issues or tracheostomy management typically require A111 billing for their complexity.
How many times within a year can A111 be billed for the same patient?
It can be billed up to four times per patient, per physician, every 12 months.
What should be documented to satisfy A111's timing requirements?
The start and end times of the re-assessment service must be recorded in the patient's chart.
How does a complex medical specific re-assessment differ from a standard re-assessment in critical care?
A complex re-assessment involves addressing multi-system complications and more detailed follow-ups than standard evaluations.
Can A111 be billed for a virtual assessment?
Yes, A111 can be billed for services rendered virtually, documented as A111A.
In a scenario where multiple systems are affected, is A111 applicable?
Yes, particularly for patients with multiple systemic sequelae post critical illness, A111 can be billed.
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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