HCPCS 'Q' Modifiers - Free Medical Coding

ModifierDescription
Q0Investigational clinical service provided in a clinical research study that is in an approved clinical research study

Q1Routine clinical service provided in a clinical research study that is in an approved clinical research study
Q2Demonstration procedure/service
Q3Live kidney donor surgery and related services
Q4Service for ordering/referring physician qualifies as a service exemption

Q5Service furnished under a reciprocal billing arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
Q6Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
Q7One class a finding
Q8Two class b findings
Q9One class b and two class c findings

QAPrescribed amounts of stationary oxygen for daytime use while at rest and nighttime use differ and the average of the two amounts is less than 1 liter per minute (lpm)
QBPrescribed amounts of stationary oxygen for daytime use while at rest and nighttime use differ and the average of the two amounts exceeds 4 liters per minute (lpm) and portable oxygen is prescribed
QCSingle channel monitoring
QDRecording and storage in solid state memory by a digital recorder

QEPrescribed amount of stationary oxygen while at rest is less than 1 liter per minute (lpm)
QFPrescribed amount of stationary oxygen while at rest exceeds 4 liters per minute (lpm) and portable oxygen is prescribed
QGPrescribed amount of stationary oxygen while at rest is greater than 4 liters per minute (lpm)

QHOxygen conserving device is being used with an oxygen delivery system
QJServices/items provided to a prisoner or patient in state or local custody, however the state or local government, as applicable, meets the requirements in 42 cfr 411.4 (b)
QKMedical direction of two, three, or four concurrent anesthesia procedures involving qualified individuals

QLPatient pronounced dead after ambulance called
QMAmbulance service provided under arrangement by a provider of services
QNAmbulance service furnished directly by a provider of services
QPDocumentation is on file showing that the laboratory test(s) was ordered individually or ordered as a cpt-recognized panel other than automated profile codes 80002-80019, g0058, g0059, and g0060.

QQOrdering professional consulted a qualified clinical decision support mechanism for this service and the related data was provided to the furnishing professional
QRPrescribed amounts of stationary oxygen for daytime use while at rest and nighttime use differ and the average of the two amounts is greater than 4 liters per minute (lpm)
QSMonitored anesthesia care service
QTRecording and storage on tape by an analog tape recorder

QWClia waived test
QXCrna service: with medical direction by a physician
QYMedical direction of one certified registered nurse anesthetist (crna) by an anesthesiologist
QZCrna service: without medical direction by a physician

HCPCS ‘Q’ Modifiers