		observed	calculated	calculated	calculated	calculated
K1034	Provision of covid-19 test, nonprescription self-administered and self-collected use, fda approved, authorized or cleared, one test count	30,143	$1,781,284,719	7.5%	153,281,273	505
A0427	Ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency)	6,841	$1,511,990,754	6.4%	3,770,133	170
97110	Descriptor not shown (CPT code)	79,999	$1,150,871,610	4.9%	63,754,222	480
G0439	Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	105,855	$1,145,168,374	4.8%	9,739,340	60
97530	Descriptor not shown (CPT code)	62,717	$911,698,617	3.9%	36,072,817	344
A0429	Ambulance service, basic life support, emergency transport (bls-emergency)	7,808	$888,448,667	3.8%	2,595,017	100
92014	Descriptor not shown (CPT code)	35,415	$782,563,365	3.3%	9,315,489	125
A0425	Ground mileage, per statute mile	8,934	$728,575,834	3.1%	99,036,467	2,970
97112	Descriptor not shown (CPT code)	61,940	$630,172,130	2.7%	29,112,817	290
A0428	Ambulance service, basic life support, non-emergency transport, (bls)	2,772	$591,445,361	2.5%	2,943,556	181
93306	Descriptor not shown (CPT code)	24,624	$575,131,955	2.4%	6,693,078	218
97140	Descriptor not shown (CPT code)	65,133	$466,049,718	2.0%	28,671,869	268
90837	Descriptor not shown (CPT code)	15,257	$351,071,588	1.5%	3,691,219	182
98941	Descriptor not shown (CPT code)	27,092	$348,532,710	1.5%	12,637,493	325
G0008	Administration of influenza virus vaccine	119,096	$343,583,253	1.5%	11,884,396	48
90960	Descriptor not shown (CPT code)	6,549	$333,207,529	1.4%	1,197,633	153
G6015	Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session	1,429	$308,635,707	1.3%	1,082,421	533
93229	Descriptor not shown (CPT code)	2,091	$306,412,384	1.3%	368,089	31
A0431	Ambulance service, conventional air services, transport, one way (rotary wing)	348	$290,262,053	1.2%	66,758	86
90480	Descriptor not shown (CPT code)	46,950	$255,705,645	1.1%	6,890,021	86
92134	Descriptor not shown (CPT code)	26,868	$229,361,531	0.97%	7,906,738	69
92012	Descriptor not shown (CPT code)	17,177	$222,401,739	0.94%	3,439,381	84
G2067	Medication assisted treatment, methadone; weekly bundle including dispensing and/or administration, substance use counseling, individual and group therapy, and toxicology testing, if performed (provision of the services by a medicare-enrolled opioid treatm	830	$192,698,870	0.82%	895,769	641
96413	Descriptor not shown (CPT code)	7,514	$160,478,106	0.68%	1,591,566	146
92004	Descriptor not shown (CPT code)	26,467	$158,694,743	0.67%	1,645,023	37
93880	Descriptor not shown (CPT code)	21,316	$156,230,030	0.66%	1,631,217	41
90834	Descriptor not shown (CPT code)	10,713	$145,125,769	0.61%	2,202,964	126
G0483	Drug test(s), definitive, utilizing (1) drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including, but not limited to gc/ms (any type, single or tandem) and lc/ms	1,063	$142,991,321	0.61%	594,208	106
A0436	Rotary wing air mileage, per statute mile	348	$131,294,625	0.56%	4,401,827	5,695
00142	Descriptor not shown (CPT code)	19,760	$129,677,151	0.55%	1,688,585	35
A9555	Rubidium rb-82, diagnostic, per study dose, up to 60 millicuries	1,266	$120,454,355	0.51%	283,198	126
R0070	Transportation of portable x-ray equipment and personnel to home or nursing home, per trip to facility or location, one patient seen	285	$118,902,626	0.50%	724,949	756
J3490	Unclassified drugs	2,838	$114,718,469	0.49%	477,000	58
97161	Descriptor not shown (CPT code)	35,745	$113,952,457	0.48%	1,533,616	31
92083	Descriptor not shown (CPT code)	25,484	$113,791,823	0.48%	2,635,193	52
G0482	Drug test(s), definitive, utilizing (1) drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including, but not limited to gc/ms (any type, single or tandem) and lc/ms	1,618	$108,357,043	0.46%	560,112	84
G0105	Colorectal cancer screening; colonoscopy on individual at high risk	8,773	$105,087,294	0.44%	384,059	27
93000	Descriptor not shown (CPT code)	71,016	$103,710,595	0.44%	9,908,195	37
93970	Descriptor not shown (CPT code)	20,939	$102,680,906	0.43%	1,382,354	35
97162	Descriptor not shown (CPT code)	35,551	$97,204,404	0.41%	1,309,329	27
00811	Descriptor not shown (CPT code)	30,986	$96,252,164	0.41%	1,183,955	22
00731	Descriptor not shown (CPT code)	39,088	$96,150,434	0.41%	1,164,155	21
U0003	Infectious agent detection by nucleic acid (dna or rna); severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (coronavirus disease [covid-19]), amplified probe technique, making use of high throughput technologies as described by cms-2020-01-r	973	$94,931,075	0.40%	1,292,001	84
A9595	Piflufolastat f-18, diagnostic, 1 millicurie	528	$94,385,026	0.40%	189,481	225
93010	Descriptor not shown (CPT code)	50,616	$92,919,548	0.39%	15,105,145	110
90961	Descriptor not shown (CPT code)	6,091	$91,360,765	0.39%	398,188	45
92250	Descriptor not shown (CPT code)	25,087	$86,318,933	0.37%	3,326,330	62
A9607	Lutetium lu 177 vipivotide tetraxetan, therapeutic, 1 millicurie	44	$84,920,922	0.36%	430,015	7,568
90832	Descriptor not shown (CPT code)	6,164	$81,376,649	0.34%	1,642,541	83
93458	Descriptor not shown (CPT code)	7,990	$81,077,132	0.34%	381,256	37

Source: CMS Medicare Physician & Other Practitioners public use files (Original Medicare Part B fee-for-service). Descriptions of HCPCS Level II codes are the official CMS descriptors, shown verbatim; CPT codes show a ClaimLight category in place of the descriptor. Data year 2023.

Original Medicare Part B fee-for-service only; CMS suppresses provider lines with fewer than 11 beneficiaries. How these figures are computed