Table B.2a. Medicare beneficiary prevalence* for chronic conditions** using fee-for-service (FFS) claims, 2010–2019
Prev = prevalence
Totals	2019 numerator	2019	2018 numerator	2018	2017 numerator	2017	2016 numerator	2016	2015 numerator	2015
Total denominator†	31,860,990		32,184,841		32,483,529		32607998		32,179,757
Denominator — males only▲	14,448,754	45.30%	14,557,985	45.20%	14,663,165	45.10%	14680123	45.00%	14,465,415	45.00%
Denominator — females only‡	17,412,231	54.70%	17,626,850	54.80%	17,820,358	54.90%	17927869	55.00%	17,714,337	55.00%
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Chronic condition**	2019 numerator#	2019 Prev Rate	2018 numerator#	2018 Prev Rate	2017 numerator#	2017 Prev Rate	2016 numerator#	2016 Prev Rate	2015 numerator#	2015 Prev Rate
Hypertension	18,792,401	59.00%	18,938,578	58.80%	19,060,192	58.70%	19105483	58.60%	18,750,064	58.30%
Hyperlipidemia	15,925,681	50.00%	15,787,069	49.10%	15,686,586	48.30%	15146099	46.40%	15,216,792	47.30%
Rheumatoid arthritis/Osteoarthritis	11,209,201	35.20%	11,152,441	34.70%	11,108,321	34.20%	10908057	33.50%	10,342,805	32.10%
Ischemic heart disease	8,856,093	27.80%	8,917,499	27.70%	9,018,718	27.80%	9122052	28.00%	9,083,042	28.20%
Diabetes	8,771,622	27.50%	8,919,842	27.70%	9,081,954	28.00%	9163634	28.10%	9,062,604	28.20%
Chronic kidney disease	8,280,804	26.00%	8,145,457	25.30%	8,048,628	24.80%	7531754	23.10%	6,228,879	19.40%
Anemia	7,195,348	22.60%	7,239,463	22.50%	7,306,548	22.50%	7324867	22.50%	7,362,976	22.90%
Depression	6,172,840	19.40%	6,066,669	18.80%	5,966,519	18.40%	5812110	17.80%	5,741,768	17.80%
Cataract	5,614,119	17.60%	5,685,874	17.70%	5,787,577	17.80%	5856642	18.00%	5,834,323	18.10%
Benign prostatic hyperplasia▲	2,604,982	18.00%	2,513,186	17.30%	2,466,882	16.80%	2372143	16.20%	2,241,647	15.50%
Acquired hypothyroidism	5,262,192	16.50%	5,223,485	16.20%	5,179,377	15.90%	5154798	15.80%	5,010,087	15.60%
Heart failure	4,657,176	14.60%	4,655,713	14.50%	4,665,730	14.40%	4690896	14.40%	4,652,637	14.50%
Chronic obstructive pulmonary disease	3,730,918	11.70%	3,820,446	11.90%	3,926,203	12.10%	3927067	12.00%	3,850,136	12.00%
Alzheimer’s disease, related disorders, or senile dementia	3,540,308	11.10%	3,620,471	11.20%	3,668,111	11.30%	3625188	11.10%	3,474,060	10.80%
Glaucoma	3,068,702	9.60%	3,080,540	9.60%	3,107,902	9.60%	2392332	7.30%	3,081,627	9.60%
Atrial fibrillation	2,805,567	8.80%	2,806,009	8.70%	2,811,985	8.70%	2806954	8.60%	2,789,063	8.70%
Cancer, prostate▲	1,091,738	7.60%	1,067,853	7.30%	1,055,251	7.20%	1041335	7.10%	1,016,376	7.00%
Osteoporosis	2,291,912	7.20%	2,190,226	6.80%	2,137,230	6.60%	2082581	6.40%	2,066,638	6.40%
Cancer, female breast‡	1,072,697	6.20%	1,052,717	6.00%	1,039,940	5.80%	1023455	5.70%	997,882	5.60%
Asthma	1,651,510	5.20%	1,648,710	5.10%	1,719,783	5.30%	1726018	5.30%	1,756,685	5.50%
Alzheimer's disease	1,255,744	3.90%	1,322,474	4.10%	1,385,665	4.30%	1411457	4.30%	1,385,135	4.30%
Stroke/Transient ischemic attack	1,238,014	3.90%	1,256,114	3.90%	1,270,729	3.90%	1262036	3.90%	1,270,383	3.90%
Cancer, colorectal	393,852	1.20%	397,189	1.20%	402,658	1.20%	404897	1.20%	406,155	1.30%
Cancer, lung	365,414	1.10%	359,102	1.10%	356,189	1.10%	351744	1.10%	348,239	1.10%
Acute myocardial infarction	304,933	1.00%	306,038	1.00%	308,640	1.00%	300868	0.90%	281,530	0.90%
Cancer, endometrial‡	125,525	0.70%	121,327	0.70%	117,856	0.70%	112644	0.60%	105,032	0.60%
Hip/Pelvic fracture	235,452	0.70%	236,967	0.70%	239,523	0.70%	234798	0.70%	254,791	0.80%
Cancer, male breast▲	9,027	0.10%	8,863	0.10%	8,801	0.10%	8548	0.10%	8,495	0.10%
* Includes all Medicare beneficiaries who were eligible for or enrolled in Medicare on or after January 1, YYYY. The Chronic Conditions Warehouse (CCW) team calculates period prevalence for these rates: beneficiaries with full or nearly full FFS coverage during the year who had claim(s) for the condition within the condition-specified look back period (chronic conditions have a one- to three-year look-back period). Refer to the CCW website for more information, including the algorithms, for these CCW Condition Categories.
** The CCW team may have counted beneficiaries in more than one chronic condition category.
†  Denominator: Includes beneficiaries with full or nearly full FFS coverage (i.e., 11 or 12 months of Medicare Parts A and B [or coverage until time of death] and one month or less of health maintenance organization [HMO] coverage).
‡  Denominator includes only females for cancer, endometrial and female breast.
▲ Denominator includes only males for benign prostatic hyperplasia and cancer, prostate and cancer, male breast. # The CCW team defines the numerator as evidence of claims for the condition.