Z125 – Cyst, haemangioma, lipoma - single lesion - other areas
OHIP Psychiatric Code — INTEGUMENTARY SYSTEM SURGICAL PROCEDURES · Schedule of Benefits
An unspecified surgical procedure identified by a 'Z' prefix code. According to the General Preamble (), Z-prefix codes are surgical procedures and are eligible for surgeon (A), assistant (B), and anaesthetist (C) suffixes. Admission assessments for patients undergoing Z-prefix procedures are deemed a specific re-assessment or medical specific re-assessment if the surgical specialist has previously assessed the patient for the same illness (see , ). Rules for subsequent visits by the surgeon also differ for Z-prefix versus non-Z prefix surgeries (see ).
When to Use
- Use Z125 for the excision of a single benign lesion such as a lipoma or haemangioma located on the trunk or extremities, provided it does not fall under the specific anatomical site codes like Z123 (face/neck).
- Select Z125 when performing a minor surgical excision that is not covered by the more comprehensive Z124 (multiple lesions) or site-specific integumentary codes.
Common Pitfalls
- Billing Z125 in conjunction with a consultation (A007) on the same day is often rejected unless the decision to operate was made during that visit and documented as the 'major pre-operative visit'.
- Attempting to claim Z125 alongside a minor procedure code (e.g., Z124) for the same anatomical area is a common audit trigger for unbundling; ensure distinct lesions are clearly documented if claiming multiple codes.
Billing Tips
- Always append the E542 premium if the procedure is performed in an office setting rather than a hospital, as this is frequently overlooked for Z-prefix integumentary procedures.
Effective: April 1, 2026
M. Integumentary System Surgical Procedures
INTEGUMENTARY SYSTEM SURGICAL PROCEDURES
Surgical
Integumentary System Surgical Procedures
All insured services must be documented in appropriate records that establish that: an insured service was provided; the service for which the account is submitted is the service that was rendered; and the service was medically necessary.
Admission assessments for those procedures prefixed with a “Z” by a surgical specialist who has assessed the patient prior to admission in respect of the same illness are deemed to be a specific re-assessment or medical specific re-assessment.
Ready to bill this code?
SnapBill makes OHIP billing simple — auto-filled codes, validation, and batch submission.