QXHCPCS Level II
Crna service: with medical direction by a physician
- Usage notes
- Append to a CRNA's anesthesia claim when the CRNA service was furnished with medical direction by a physician.
- Common mistakes
- Pairing QX on the CRNA line without a corresponding QK or QY line from the directing physician, creating a mismatched claim pair.
Related modifiers
Q0Investigational clinical service provided in a clinical research study that isQ1Routine clinical service provided in a clinical research study that is in anQ2Demonstration procedure/serviceQ3Live kidney donor surgery and related servicesQ4Service for ordering/referring physician qualifies as a service exemptionQ5Service furnished under a reciprocal billing arrangement by a substituteQ6Service furnished under a fee-for-time compensation arrangement by a substituteQ7One class a finding
Frequently asked questions
What does modifier QX mean?
Crna service: with medical direction by a physician
When do I use modifier QX?
Append to a CRNA's anesthesia claim when the CRNA service was furnished with medical direction by a physician.
What's a common mistake with modifier QX?
Pairing QX on the CRNA line without a corresponding QK or QY line from the directing physician, creating a mismatched claim pair.
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.