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Z803
Z803 – Subdural tap - unilateral
OHIP Psychiatric Code — NEUROLOGICAL SURGICAL PROCEDURES · Schedule of Benefits
Subdural tap - unilateral
When to Use
- Use Z803 for the diagnostic or therapeutic aspiration of a subdural hematoma or effusion in an infant via the fontanelle.
- Select Z803 when performing a unilateral tap as a standalone procedure rather than as part of a larger craniotomy or burr hole procedure.
Common Pitfalls
- Billing Z803 in addition to a craniotomy (e.g., S001) for the same site is often flagged as unbundling unless performed as a distinct, separate procedure.
- Submitting Z803 without a clear indication of laterality or site specificity in the operative report frequently leads to manual review or rejection.
Billing Tips
- If a bilateral tap is performed, bill Z803 with the appropriate bilateral modifier or quantity indicator to ensure correct payment for both sides.
- Leverage the GP90 provision to claim for a second surgical assistant if the complexity of the tap requires additional support, as this is explicitly permitted for Z803.
Provider Fee$53.10
Effective: April 1, 2025
Category
X. Neurological Surgical Procedures
Subcategory
NEUROLOGICAL SURGICAL PROCEDURES
Service Type
Surgical
Code Classes
Neurological Surgical Procedures, Spinal Surgical Procedures
The specific details, such as base units for anaesthesia or assistant, for procedure Z803 are not provided in the Schedule of Benefits context. Its existence and some properties are inferred from its inclusion in the list of procedures eligible for a second surgical assistant without prior authorization on page .
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