HCPCS Code Modifiers →
HCPCS National Level II Modifiers →
section notes
Q Modifiers →
section notes
Q0   Invest clinical research
Q1   Routine clinical research
Q2   Demo procedure, service
Q3   Live donor surgery/services
Q4   Svc exempt - ordrg/rfrng md
Q5   Recip bill arr subs md or pt
Q6   Fee/time comp subst md or pt
Q7   One class a finding
Q8   Two class b findings
Q9   1 class b & 2 class c fndngs
QA   Avg sta day/night o2 < 1 lpm
QB   Avg day/nite o2 > 4 lpm/port
QC   Single channel monitoring
QD   Rcrdg/strg in sld st memory
QE   Stationary o2 @ rest <1 lpm
QF   Station o2 @ rest >4lpm/port
QG   Station o2 @ rest > 4 lpm
QH   Oxygen cnsrvg dvc w del sys
QJ   Patient in state/locl custod
QK   Med dir 2-4 cncrnt anes proc
QL   Patient died after amb call
QM   Ambulance arr by provider
QN   Ambulance furn by provider
QP   Individually ordered lab tst
QR   Avg sta day/night o2 > 4 lpm
QS   Monitored anesthesia care
QT   Rcrdg/strg tape analog recdr
QW   Clia waived test
QX   Crna svc w/ md med direction
QY   Medically directed crna
QZ   Crna svc w/o med dir by md
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