NCCI edits for 99421 Code page: https://localishealth.com/cpt/99421 NCCI release: 2026 C Source: https://www.cms.gov/medicare/coding-billing/national-correct-coding-initiative-ncci-edits NOT SEPARATELY PAYABLE TOGETHER—NO NCCI-ASSOCIATED MODIFIER BYPASSES THE EDIT (modifier indicator 0) 0395T 0395T is Column One, 99421 is Column Two—99421 denies 0469T 99421 is Column One, 0469T is Column Two—0469T denies 0734T 0734T is Column One, 99421 is Column Two—99421 denies 36591 99421 is Column One, 36591 is Column Two—36591 denies 36592 99421 is Column One, 36592 is Column Two—36592 denies 80503 80503 is Column One, 99421 is Column Two—99421 denies 80504 80504 is Column One, 99421 is Column Two—99421 denies 80505 80505 is Column One, 99421 is Column Two—99421 denies 80506 80506 is Column One, 99421 is Column Two—99421 denies 90791 90791 is Column One, 99421 is Column Two—99421 denies 90792 90792 is Column One, 99421 is Column Two—99421 denies 90832 90832 is Column One, 99421 is Column Two—99421 denies 90833 90833 is Column One, 99421 is Column Two—99421 denies 90834 90834 is Column One, 99421 is Column Two—99421 denies 90836 90836 is Column One, 99421 is Column Two—99421 denies 90837 90837 is Column One, 99421 is Column Two—99421 denies 90838 90838 is Column One, 99421 is Column Two—99421 denies 93792 99421 is Column One, 93792 is Column Two—93792 denies 93793 99421 is Column One, 93793 is Column Two—93793 denies 94002 99421 is Column One, 94002 is Column Two—94002 denies 94003 99421 is Column One, 94003 is Column Two—94003 denies 94004 99421 is Column One, 94004 is Column Two—94004 denies 94660 99421 is Column One, 94660 is Column Two—94660 denies 96127 99421 is Column One, 96127 is Column Two—96127 denies 96523 99421 is Column One, 96523 is Column Two—96523 denies 98000 98000 is Column One, 99421 is Column Two—99421 denies 98001 98001 is Column One, 99421 is Column Two—99421 denies 98002 98002 is Column One, 99421 is Column Two—99421 denies 98003 98003 is Column One, 99421 is Column Two—99421 denies 98004 98004 is Column One, 99421 is Column Two—99421 denies 98005 98005 is Column One, 99421 is Column Two—99421 denies 98006 98006 is Column One, 99421 is Column Two—99421 denies 98007 98007 is Column One, 99421 is Column Two—99421 denies 98008 99421 is Column One, 98008 is Column Two—98008 denies 98009 99421 is Column One, 98009 is Column Two—98009 denies 98010 99421 is Column One, 98010 is Column Two—98010 denies 98011 99421 is Column One, 98011 is Column Two—98011 denies 98012 99421 is Column One, 98012 is Column Two—98012 denies 98013 99421 is Column One, 98013 is Column Two—98013 denies 98014 99421 is Column One, 98014 is Column Two—98014 denies 98015 99421 is Column One, 98015 is Column Two—98015 denies 98016 99421 is Column One, 98016 is Column Two—98016 denies 98966 99421 is Column One, 98966 is Column Two—98966 denies 98967 98967 is Column One, 99421 is Column Two—99421 denies 98968 98968 is Column One, 99421 is Column Two—99421 denies 99172 99421 is Column One, 99172 is Column Two—99172 denies 99202 99202 is Column One, 99421 is Column Two—99421 denies 99203 99203 is Column One, 99421 is Column Two—99421 denies 99204 99204 is Column One, 99421 is Column Two—99421 denies 99205 99205 is Column One, 99421 is Column Two—99421 denies 99211 99421 is Column One, 99211 is Column Two—99211 denies 99212 99212 is Column One, 99421 is Column Two—99421 denies 99213 99213 is Column One, 99421 is Column Two—99421 denies 99214 99214 is Column One, 99421 is Column Two—99421 denies 99215 99215 is Column One, 99421 is Column Two—99421 denies 99242 99242 is Column One, 99421 is Column Two—99421 denies 99243 99243 is Column One, 99421 is Column Two—99421 denies 99244 99244 is Column One, 99421 is Column Two—99421 denies 99245 99245 is Column One, 99421 is Column Two—99421 denies 99374 99374 is Column One, 99421 is Column Two—99421 denies 99375 99375 is Column One, 99421 is Column Two—99421 denies 99377 99377 is Column One, 99421 is Column Two—99421 denies 99378 99378 is Column One, 99421 is Column Two—99421 denies 99379 99379 is Column One, 99421 is Column Two—99421 denies 99380 99380 is Column One, 99421 is Column Two—99421 denies 99422 99422 is Column One, 99421 is Column Two—99421 denies 99423 99423 is Column One, 99421 is Column Two—99421 denies 99446 99446 is Column One, 99421 is Column Two—99421 denies 99447 99447 is Column One, 99421 is Column Two—99421 denies 99448 99448 is Column One, 99421 is Column Two—99421 denies 99449 99449 is Column One, 99421 is Column Two—99421 denies 99452 99452 is Column One, 99421 is Column Two—99421 denies 99474 99421 is Column One, 99474 is Column Two—99474 denies 99484 99484 is Column One, 99421 is Column Two—99421 denies 99487 99487 is Column One, 99421 is Column Two—99421 denies 99489 99489 is Column One, 99421 is Column Two—99421 denies 99490 99490 is Column One, 99421 is Column Two—99421 denies 99491 99491 is Column One, 99421 is Column Two—99421 denies 99492 99492 is Column One, 99421 is Column Two—99421 denies 99493 99493 is Column One, 99421 is Column Two—99421 denies 99494 99494 is Column One, 99421 is Column Two—99421 denies G0406 G0406 is Column One, 99421 is Column Two—99421 denies G0407 G0407 is Column One, 99421 is Column Two—99421 denies G0408 G0408 is Column One, 99421 is Column Two—99421 denies G0425 G0425 is Column One, 99421 is Column Two—99421 denies G0426 G0426 is Column One, 99421 is Column Two—99421 denies G0427 G0427 is Column One, 99421 is Column Two—99421 denies G0459 G0459 is Column One, 99421 is Column Two—99421 denies G0506 G0506 is Column One, 99421 is Column Two—99421 denies G0508 G0508 is Column One, 99421 is Column Two—99421 denies G0509 G0509 is Column One, 99421 is Column Two—99421 denies G2251 G2251 is Column One, 99421 is Column Two—99421 denies G2252 G2252 is Column One, 99421 is Column Two—99421 denies Q3014 99421 is Column One, Q3014 is Column Two—Q3014 denies BILLABLE TOGETHER ONLY WHEN AN NCCI-ASSOCIATED MODIFIER IS APPROPRIATE (modifier indicator 1) 0362T 99421 is Column One, 0362T is Column Two—0362T denies 0373T 99421 is Column One, 0373T is Column Two—0373T denies 77261 77261 is Column One, 99421 is Column Two—99421 denies 77262 77262 is Column One, 99421 is Column Two—99421 denies 77263 77263 is Column One, 99421 is Column Two—99421 denies 77280 77280 is Column One, 99421 is Column Two—99421 denies 77285 77285 is Column One, 99421 is Column Two—99421 denies 77290 77290 is Column One, 99421 is Column Two—99421 denies 77293 77293 is Column One, 99421 is Column Two—99421 denies 77295 77295 is Column One, 99421 is Column Two—99421 denies 77300 77300 is Column One, 99421 is Column Two—99421 denies 77301 77301 is Column One, 99421 is Column Two—99421 denies 77306 77306 is Column One, 99421 is Column Two—99421 denies 77307 77307 is Column One, 99421 is Column Two—99421 denies 77316 77316 is Column One, 99421 is Column Two—99421 denies 77317 77317 is Column One, 99421 is Column Two—99421 denies 77318 77318 is Column One, 99421 is Column Two—99421 denies 77321 77321 is Column One, 99421 is Column Two—99421 denies 77331 77331 is Column One, 99421 is Column Two—99421 denies 77332 77332 is Column One, 99421 is Column Two—99421 denies 77333 77333 is Column One, 99421 is Column Two—99421 denies 77334 77334 is Column One, 99421 is Column Two—99421 denies 77336 77336 is Column One, 99421 is Column Two—99421 denies 77338 77338 is Column One, 99421 is Column Two—99421 denies 77370 77370 is Column One, 99421 is Column Two—99421 denies 77371 77371 is Column One, 99421 is Column Two—99421 denies 77372 77372 is Column One, 99421 is Column Two—99421 denies 77373 77373 is Column One, 99421 is Column Two—99421 denies 77417 77417 is Column One, 99421 is Column Two—99421 denies 77423 77423 is Column One, 99421 is Column Two—99421 denies 77424 77424 is Column One, 99421 is Column Two—99421 denies 77425 77425 is Column One, 99421 is Column Two—99421 denies 77427 77427 is Column One, 99421 is Column Two—99421 denies 77431 77431 is Column One, 99421 is Column Two—99421 denies 77432 77432 is Column One, 99421 is Column Two—99421 denies 77435 77435 is Column One, 99421 is Column Two—99421 denies 77469 77469 is Column One, 99421 is Column Two—99421 denies 77470 77470 is Column One, 99421 is Column Two—99421 denies 77520 77520 is Column One, 99421 is Column Two—99421 denies 77522 77522 is Column One, 99421 is Column Two—99421 denies 77523 77523 is Column One, 99421 is Column Two—99421 denies 77525 77525 is Column One, 99421 is Column Two—99421 denies 77600 77600 is Column One, 99421 is Column Two—99421 denies 77605 77605 is Column One, 99421 is Column Two—99421 denies 77610 77610 is Column One, 99421 is Column Two—99421 denies 77615 77615 is Column One, 99421 is Column Two—99421 denies 77620 77620 is Column One, 99421 is Column Two—99421 denies 77750 77750 is Column One, 99421 is Column Two—99421 denies 77761 77761 is Column One, 99421 is Column Two—99421 denies 77762 77762 is Column One, 99421 is Column Two—99421 denies 77763 77763 is Column One, 99421 is Column Two—99421 denies 77767 77767 is Column One, 99421 is Column Two—99421 denies 77768 77768 is Column One, 99421 is Column Two—99421 denies 77778 77778 is Column One, 99421 is Column Two—99421 denies 77789 77789 is Column One, 99421 is Column Two—99421 denies 77790 77790 is Column One, 99421 is Column Two—99421 denies 90951 90951 is Column One, 99421 is Column Two—99421 denies 90952 90952 is Column One, 99421 is Column Two—99421 denies 90953 90953 is Column One, 99421 is Column Two—99421 denies 90954 90954 is Column One, 99421 is Column Two—99421 denies 90955 90955 is Column One, 99421 is Column Two—99421 denies 90956 90956 is Column One, 99421 is Column Two—99421 denies 90957 90957 is Column One, 99421 is Column Two—99421 denies 90958 90958 is Column One, 99421 is Column Two—99421 denies 90959 90959 is Column One, 99421 is Column Two—99421 denies 90960 90960 is Column One, 99421 is Column Two—99421 denies 90961 90961 is Column One, 99421 is Column Two—99421 denies 90962 90962 is Column One, 99421 is Column Two—99421 denies 90963 90963 is Column One, 99421 is Column Two—99421 denies 90964 90964 is Column One, 99421 is Column Two—99421 denies 90965 90965 is Column One, 99421 is Column Two—99421 denies 90966 90966 is Column One, 99421 is Column Two—99421 denies 90967 90967 is Column One, 99421 is Column Two—99421 denies 90968 90968 is Column One, 99421 is Column Two—99421 denies 90969 90969 is Column One, 99421 is Column Two—99421 denies 90970 90970 is Column One, 99421 is Column Two—99421 denies 95004 95004 is Column One, 99421 is Column Two—99421 denies 95012 95012 is Column One, 99421 is Column Two—99421 denies 95017 95017 is Column One, 99421 is Column Two—99421 denies 95018 95018 is Column One, 99421 is Column Two—99421 denies 95024 95024 is Column One, 99421 is Column Two—99421 denies 95027 95027 is Column One, 99421 is Column Two—99421 denies 95028 95028 is Column One, 99421 is Column Two—99421 denies 95044 95044 is Column One, 99421 is Column Two—99421 denies 95052 95052 is Column One, 99421 is Column Two—99421 denies 95056 95056 is Column One, 99421 is Column Two—99421 denies 95060 95060 is Column One, 99421 is Column Two—99421 denies 95065 95065 is Column One, 99421 is Column Two—99421 denies 95070 95070 is Column One, 99421 is Column Two—99421 denies 95076 95076 is Column One, 99421 is Column Two—99421 denies 95079 95079 is Column One, 99421 is Column Two—99421 denies 95115 95115 is Column One, 99421 is Column Two—99421 denies 95117 95117 is Column One, 99421 is Column Two—99421 denies 95120 95120 is Column One, 99421 is Column Two—99421 denies 95125 95125 is Column One, 99421 is Column Two—99421 denies 95130 95130 is Column One, 99421 is Column Two—99421 denies 95131 95131 is Column One, 99421 is Column Two—99421 denies 95132 95132 is Column One, 99421 is Column Two—99421 denies 95133 95133 is Column One, 99421 is Column Two—99421 denies 95134 95134 is Column One, 99421 is Column Two—99421 denies 95144 95144 is Column One, 99421 is Column Two—99421 denies 95145 95145 is Column One, 99421 is Column Two—99421 denies 95146 95146 is Column One, 99421 is Column Two—99421 denies 95147 95147 is Column One, 99421 is Column Two—99421 denies 95148 95148 is Column One, 99421 is Column Two—99421 denies 95149 95149 is Column One, 99421 is Column Two—99421 denies 95165 95165 is Column One, 99421 is Column Two—99421 denies 95170 95170 is Column One, 99421 is Column Two—99421 denies 95180 95180 is Column One, 99421 is Column Two—99421 denies 97151 99421 is Column One, 97151 is Column Two—97151 denies 97153 99421 is Column One, 97153 is Column Two—97153 denies 97154 99421 is Column One, 97154 is Column Two—97154 denies 97155 99421 is Column One, 97155 is Column Two—97155 denies 97156 99421 is Column One, 97156 is Column Two—97156 denies 97157 99421 is Column One, 97157 is Column Two—97157 denies 97158 99421 is Column One, 97158 is Column Two—97158 denies 97810 97810 is Column One, 99421 is Column Two—99421 denies 97811 97811 is Column One, 99421 is Column Two—99421 denies 97813 97813 is Column One, 99421 is Column Two—99421 denies 97814 97814 is Column One, 99421 is Column Two—99421 denies 98970 99421 is Column One, 98970 is Column Two—98970 denies 98971 99421 is Column One, 98971 is Column Two—98971 denies 98972 99421 is Column One, 98972 is Column Two—98972 denies 99091 99091 is Column One, 99421 is Column Two—99421 denies 99173 99421 is Column One, 99173 is Column Two—99173 denies 99174 99421 is Column One, 99174 is Column Two—99174 denies 99177 99421 is Column One, 99177 is Column Two—99177 denies 99183 99183 is Column One, 99421 is Column Two—99421 denies 99358 99358 is Column One, 99421 is Column Two—99421 denies 99359 99359 is Column One, 99421 is Column Two—99421 denies 99418 99418 is Column One, 99421 is Column Two—99421 denies 99424 99421 is Column One, 99424 is Column Two—99424 denies 99425 99425 is Column One, 99421 is Column Two—99421 denies 99426 99421 is Column One, 99426 is Column Two—99426 denies 99427 99421 is Column One, 99427 is Column Two—99427 denies 99437 99437 is Column One, 99421 is Column Two—99421 denies 99439 99439 is Column One, 99421 is Column Two—99421 denies 99451 99451 is Column One, 99421 is Column Two—99421 denies 99495 99495 is Column One, 99421 is Column Two—99421 denies 99496 99496 is Column One, 99421 is Column Two—99421 denies G0250 99421 is Column One, G0250 is Column Two—G0250 denies G0378 99421 is Column One, G0378 is Column Two—G0378 denies G0379 99421 is Column One, G0379 is Column Two—G0379 denies MUE units per patient per date of service: not published