C480 – Complex rheumatology assessment
OHIP Surgical Procedures Code — CONSULTATIONS AND VISITS · Schedule of Benefits
A complex rheumatology assessment rendered to a non-emergency hospital in-patient by a specialist in Rheumatology. This service is subject to the same conditions as an out-patient Complex Rheumatology Assessment (A480). As an assessment, it includes the specific elements outlined in the Schedule of Benefits, such as a direct physical encounter, patient history, physical examination, and arranging for any related care or follow-up as described in . This service is governed by the rules for non-emergency in-patient services found in to .
When to Use
- Use C480 for the ongoing management of a hospitalized patient with a confirmed diagnosis of systemic vasculitis, inflammatory myopathy, or polymyalgia rheumatica.
- Use this code when the patient's condition requires the specialized, complex oversight of a rheumatologist during a non-emergency hospital admission.
Common Pitfalls
- Claiming C480 for general rheumatology follow-ups that do not meet the specific diagnostic criteria for vasculitides, myopathies, or polymyalgia rheumatica will result in a downgrade to a standard hospital visit code.
- Attempting to bill C480 in conjunction with a Special Visit Premium is a common rejection; use 'A' prefix codes if the service meets the criteria for a special visit.
- Exceeding the 12-month frequency limit without a clearly different diagnosis will trigger an automatic adjustment to a lower-valued assessment fee.
Billing Tips
- Ensure your documentation explicitly links the assessment to the ongoing management of one of the four qualifying disease categories to avoid audit-related downgrades.
- If the patient is transferred from another physician during the same admission, ensure you are not duplicating a previously claimed consultation or assessment, as only one is payable per admission.
Effective: June 1, 2025
A. Consultations and Visits
CONSULTATIONS AND VISITS
Assessment
Hospital and Institutional Consultations and Assessments
A complex rheumatology assessment is an assessment for the ongoing management of the following diseases of the musculoskeletal system where the complexity of the condition requires the continuing management by a rheumatologist: Systemic vasculitides; Inflammatory myopathies; Polymyalgia rheumatica; or Paediatric vasculitides.
Must include the elements of a medical specific re-assessment, or the amount payable will be adjusted to lesser assessment fee.
subject to the same conditions as A480
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