OHIP Billing Guide🩺 ServicePublished 2026
A013

A013 OHIP Billing Code: Enhance Anesthesia Care with Specific Assessments

A013 is an OHIP billing code for specific assessments by anesthesiology specialists, focusing on detailed evaluations related to patient history and examination.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference64.65 CAD~4 min read

1What Is the A013 OHIP Code?

What is the A013 Billing Code?

The A013 billing code under the OHIP Schedule of Benefits is used by anesthesiology specialists to claim payment for a specific assessment. This assessment involves taking a comprehensive history of the presenting problem and performing a detailed examination of the relevant body parts, regions, or systems. It is typically utilized in pre-anesthetic evaluations in a clinic setting, such as assessing a difficult airway, evaluating malignant hyperthermia susceptibility, or determining analgesic tolerance in chronic pain management.

Specific assessments are crucial in ensuring anesthesiologists have all necessary information before moving forward with patient care. However, these assessments can be overlooked if not enough time is dedicated to thorough patient consultation, or if comprehensive documentation is not maintained as required.

2Related Codes

CodeNameFrequencyDescription
C013Specific assessmentN/AUsed for hospital in-patient specific assessments, similar to A013.
C014Specific re-assessmentAs neededFollows up after initial assessment, if patient conditions change.
A014Partial assessmentAs neededFor less comprehensive evaluation compared to a specific assessment.
A015ConsultationAs neededFull consultation, including history, examination, and advice.

3Eligibility Requirements

Eligibility Requirements for A013

To bill under the A013 code, the following criteria must be met:

  • The service is classified as a special anaesthetic consultation in an outpatient or clinic setting.
  • The anesthesiologist must spend a minimum of 50 minutes of direct patient contact, focused exclusively on the assessment, separate from other billable interventions.
  • Specific and medical specific assessments are limited to one per patient per physician in a 12-month period, unless the criteria for a second assessment are met:
    1. The patient presents with a new, unrelated diagnosis.
    2. For medical specific assessments, at least 90 days have passed, and it is a hospital admission assessment.
  • Accurate recording of the start and end times on the patient's medical record is mandatory.

4What Your Clinical Note Must Show

1Documentation Requirements for A013

Ensure complete and accurate records that detail the assessment time.

  • Record the start and end time of the direct patient contact.
  • Maintain comprehensive notes on the patient's medical history and the examination results.
  • Document any procedural steps or diagnostic decisions made during the assessment.

5Weak vs. Strong Note Examples

The strong note succeeds because it provides a detailed account of the time spent, procedural content, and specific focus of the consultation, ensuring compliance with OHIP requirements.

Weak Note

Patient seen for specific assessment. History and examination completed. Time not recorded.

Strong Note

Specific assessment conducted for potential difficult airway in a known chronic pain patient. Detailed examination and history taken over 50 minutes. Assessment included review of past anesthetic records, thorough airway examination, and discussion of analgesic regimen.

  • Start time: 1:00 PM, End time: 1:50 PM
  • Comprehensive airway evaluation and patient history documented

6Common Reasons This Code Is Missed

1
Incomplete Time Recording
Failure to accurately document the start and end times of the assessment invalidates the billing claim.
2
Lack of Comprehensive Notes
Not documenting the full history and detailed examination can lead to claim denial.
3
Eligibility Overlook
Billing more than allowed without meeting specific criteria can result in adjustments or rejection.
4
Patient Eligibility Error
Misinterpretation of the patient's eligibility for a second assessment within a 12-month period.
Document A013 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 A013 be billed?
A013 can be billed once per patient per physician per 12-month period, with exceptions for new diagnoses or after 90 days for hospital admission assessments.
What scenarios justify billing A013 in anesthesiology?
Typical scenarios include pre-assessment for suspected difficult airway or evaluating chronic pain patient's analgesic use prior to surgery.
Can A013 be billed when the patient has a suspected malignant hyperthermia?
Yes, a pre-anesthetic assessment for conditions like suspected malignant hyperthermia qualifies for A013 billing.
What patient situations necessitate a specific assessment under code A013?
Patients presenting with complications like a difficult airway history or chronic pain management challenges qualify for specific assessments.
What documentation is required for billing A013?
Detailed records of the assessment process, including start and end times, comprehensive patient history, examination, and diagnostic decisions.
Can A013 assessments be conducted virtually?
Yes, A013 assessments can be done via video or telephone, billed as A013A.
How can I ensure my documentation supports A013 billing?
Ensure complete documentation of time, comprehensive history, and examination results that are aligned with the A013 requirements.
What patient referrals typically require an A013 assessment?
Referrals often come from cases where advanced evaluation is needed due to complex anesthetic risks like suspected difficult airway.
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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