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Z301
Z301 – Drainage of abscess or haematoma
OHIP Psychiatric Code — RESPIRATORY SURGICAL PROCEDURES · Schedule of Benefits
`Z301` is for the drainage of an abscess or hematoma. As a 'Z' code, it is an Independent Operative Procedure (IOP), which has specific payment rules for any assessments performed on the same day (see ).
When to Use
- Use Z301 for the simple incision and drainage of a superficial abscess or hematoma that does not require the more extensive surgical debridement associated with Z302.
- Select Z301 when the procedure is performed as a standalone surgical event, rather than as a minor component of a larger surgical procedure where the fee would be bundled.
Common Pitfalls
- Billing Z301 in addition to a consultation or major assessment on the same day by the same physician will result in the assessment being rejected due to the Independent Operative Procedure (IOP) rule.
- Confusing Z301 with Z304; ensure the procedure is strictly drainage of an abscess or hematoma rather than the excision of a lesion or cyst, which requires different coding.
Billing Tips
- Ensure the clinical note explicitly documents the incision and drainage process to justify the Z301 fee, as auditors frequently flag vague procedure descriptions.
- If the patient is between 5 and 15 years of age, remember to apply the 10% age-based premium to the Z301 fee to maximize the claim value.
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