		observed	calculated	calculated	calculated	calculated
A0427	Ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency)	6,882	$1,444,134,304	6.2%	3,909,857	173
97110	Descriptor not shown (CPT code)	75,743	$1,133,177,054	4.8%	60,746,214	498
G0439	Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	101,394	$1,107,411,151	4.7%	9,213,052	59
K1034	Provision of covid-19 test, nonprescription self-administered and self-collected use, fda approved, authorized or cleared, one test count	32,223	$1,053,891,540	4.5%	92,795,222	762
A0429	Ambulance service, basic life support, emergency transport (bls-emergency)	7,891	$830,873,614	3.5%	2,634,202	105
92014	Descriptor not shown (CPT code)	35,586	$776,538,904	3.3%	9,275,347	124
97530	Descriptor not shown (CPT code)	54,839	$740,010,645	3.2%	28,534,153	310
A0425	Ground mileage, per statute mile	8,990	$702,563,928	3.0%	102,907,432	3,114
93306	Descriptor not shown (CPT code)	24,605	$585,247,587	2.5%	6,632,392	216
A0428	Ambulance service, basic life support, non-emergency transport, (bls)	2,897	$582,686,428	2.5%	3,176,450	214
97112	Descriptor not shown (CPT code)	56,003	$551,711,341	2.4%	24,323,444	267
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	3,546	$493,149,136	2.1%	6,649,680	33
97140	Descriptor not shown (CPT code)	62,525	$465,791,362	2.0%	27,835,618	277
90960	Descriptor not shown (CPT code)	6,814	$390,094,256	1.7%	1,368,457	168
90837	Descriptor not shown (CPT code)	14,936	$353,404,091	1.5%	3,604,735	181
98941	Descriptor not shown (CPT code)	27,146	$341,100,562	1.5%	12,346,537	319
G0008	Administration of influenza virus vaccine	125,569	$338,925,439	1.4%	13,192,150	52
G6015	Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session	1,448	$323,482,768	1.4%	1,097,992	530
93229	Descriptor not shown (CPT code)	1,757	$291,522,475	1.2%	329,275	31
A0431	Ambulance service, conventional air services, transport, one way (rotary wing)	335	$269,695,821	1.2%	66,895	88
92012	Descriptor not shown (CPT code)	18,426	$237,424,498	1.0%	3,704,227	86
92134	Descriptor not shown (CPT code)	25,870	$223,087,277	0.95%	7,624,132	66
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	842	$194,410,395	0.83%	1,021,249	715
U0005	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, cdc or non-cdc, making use of high throughput technologies, completed within	3,802	$193,861,115	0.83%	7,841,589	36
0124A	Descriptor not shown (CPT code)	38,515	$177,531,376	0.76%	4,527,553	59
96413	Descriptor not shown (CPT code)	7,300	$166,447,793	0.71%	1,550,193	147
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	1,217	$166,039,776	0.71%	684,475	100
90834	Descriptor not shown (CPT code)	11,741	$165,178,475	0.71%	2,428,884	128
92004	Descriptor not shown (CPT code)	27,219	$164,634,257	0.70%	1,720,092	38
93880	Descriptor not shown (CPT code)	22,336	$160,788,650	0.69%	1,674,441	41
U0004	2019-ncov coronavirus, sars-cov-2/2019-ncov (covid-19), any technique, multiple types or subtypes (includes all targets), non-cdc, making use of high throughput technologies as described by cms-2020-01-r	710	$153,549,774	0.66%	2,071,362	104
0064A	Descriptor not shown (CPT code)	31,533	$149,729,382	0.64%	3,764,907	63
00142	Descriptor not shown (CPT code)	20,263	$138,829,678	0.59%	1,744,985	35
0134A	Descriptor not shown (CPT code)	27,512	$129,224,758	0.55%	3,299,650	61
G2066	Interrogation device evaluation(s), (remote) up to 30 days; implantable cardiovascular physiologic monitor system, implantable loop recorder system, or subcutaneous cardiac rhythm monitor system, remote data acquisition(s), receipt of transmissions and tec	3,296	$123,171,273	0.53%	1,214,764	131
A0436	Rotary wing air mileage, per statute mile	335	$122,724,913	0.52%	4,430,000	5,778
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	1,696	$120,409,493	0.51%	617,182	89
92083	Descriptor not shown (CPT code)	25,281	$113,133,658	0.48%	2,616,389	52
R0070	Transportation of portable x-ray equipment and personnel to home or nursing home, per trip to facility or location, one patient seen	285	$110,401,865	0.47%	722,810	787
90961	Descriptor not shown (CPT code)	6,514	$107,758,472	0.46%	460,849	49
97161	Descriptor not shown (CPT code)	34,013	$107,363,788	0.46%	1,439,378	31
A9555	Rubidium rb-82, diagnostic, per study dose, up to 60 millicuries	1,199	$107,044,087	0.46%	254,279	124
93970	Descriptor not shown (CPT code)	21,730	$104,798,754	0.45%	1,427,861	36
93000	Descriptor not shown (CPT code)	72,023	$102,667,958	0.44%	9,848,419	37
00731	Descriptor not shown (CPT code)	38,935	$101,236,341	0.43%	1,176,690	21
G0105	Colorectal cancer screening; colonoscopy on individual at high risk	8,623	$98,638,928	0.42%	380,903	27
93010	Descriptor not shown (CPT code)	51,536	$97,957,674	0.42%	15,552,982	121
00811	Descriptor not shown (CPT code)	29,935	$95,247,650	0.41%	1,145,400	22
0054A	Descriptor not shown (CPT code)	27,819	$94,758,137	0.40%	2,369,878	38
J3590	Unclassified biologics	827	$91,083,306	0.39%	187,249	105

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 2022.

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