GZHCPCS Level II
Item or service expected to be denied as not reasonable and necessary
- Usage notes
- Append when a denial is expected because the service isn't reasonable and necessary, and no ABN was obtained from the patient.
- Common mistakes
- Using GZ when an ABN actually was obtained — that scenario calls for GA instead, and misreporting it can affect the patient's liability for the charge.
Related modifiers
G0Telehealth services for diagnosis, evaluation, or treatment, of symptoms of anG1Most recent urr reading of less than 60G2Most recent urr reading of 60 to 64.9G3Most recent urr reading of 65 to 69.9G4Most recent urr reading of 70 to 74.9G5Most recent urr reading of 75 or greaterG6Esrd patient for whom less than six dialysis sessions have been provided in aG7Pregnancy resulted from rape or incest or pregnancy certified by physician as
Frequently asked questions
What does modifier GZ mean?
Item or service expected to be denied as not reasonable and necessary
When do I use modifier GZ?
Append when a denial is expected because the service isn't reasonable and necessary, and no ABN was obtained from the patient.
What's a common mistake with modifier GZ?
Using GZ when an ABN actually was obtained — that scenario calls for GA instead, and misreporting it can affect the patient's liability for the charge.
HCPCS modifier data from CMS. CPT® is a registered trademark of the American Medical Association — CPT modifier descriptions are not included on this site. Always verify codes with authoritative sources before making billing decisions.