2019 Total Medicare beneficiary counts* [a1a]	64430729
Coverage***
Full or nearly full fee-for-service (FFS)	31860990
Non-FFS	32569739
Table E.1 Number of Medicare Beneficiaries* by Chronic Condition** and Assessment Type, 2010–2019
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2019 Chronic Condition	OASIS▲	MDS‡	IRF-PAI#	Swing Bed^	At least one	n {all bene}
All Assessments for Medicare Beneficiaries	4930656	3513392	421053	13746	7019063	64430729
Hypertension	2975336	2132490	325552	11191	4219658	20668844
Hyperlipidemia	2282366	1501494	274027	8348	3082389	17198553
Rheumatoid Arthritis / Osteoarthritis	2071620	1354187	218856	8133	2798180	12397247
Chronic Kidney Disease	1955863	1483936	225784	7679	2785178	9538759
Anemia	1899608	1524188	245924	7873	2741855	8015345
Ischemic Heart Disease	1867711	1355121	211550	7160	2618595	10181642
Diabetes	1600978	1183705	175441	5625	2299028	10493681
Heart Failure	1488777	1202616	163993	6652	2156857	5412873
Depression	1396045	1279692	175384	5118	2157802	6994263
Alzheimer’s disease, related disorders, or senile dementia	1248551	1550290	124395	4636	2298438	4218595
Chronic Obstructive Pulmonary Disease	1041518	754504	113188	5291	1441186	4127934
Acquired hypothyroidism	915365	687909	100380	3776	1304264	5651288
Atrial fibrillation	713317	548180	95648	3106	985101	2965235
Benign prostatic hyperplasia	505355	362816	72282	1979	694248	2795631
Osteoporosis	503585	340444	59171	1824	662266	2430101
Cataract	441021	376501	47134	1527	694975	5990634
Alzheimer's disease	406271	585548	25800	1261	838139	1474982
Stroke / Transient Ischemic Attack	404420	380614	109310	1522	633779	1354914
Asthma	357758	194435	38702	1133	441803	1812962
Glaucoma	311462	193800	30799	833	422487	3264979
Cancer, Female Breast	175891	111438	18762	703	227473	1161635
Hip / Pelvic Fracture	148241	175101	38501	1316	222103	252740
Cancer, Prostate	146477	93889	19793	591	193858	1167241
Acute myocardial infarction	118629	87787	20173	628	158857	339957
Cancer, Lung	101168	64130	10753	390	133403	406829
Cancer, Colorectal	99495	67677	11200	489	132464	432047
Cancer, Endometrial	28150	18726	3229	100	36320	136623
* Includes all Medicare beneficiaries who were eligible for or enrolled in Medicare on or after January 1, YYYY.
** Chronic conditions have a one- to three-year look-back time period (reference period). Refer to the Chronic Conditions Warehouse (CCW) website for more information, including the algorithms, for these Condition Categories.
†  In any given year the CCW team may count a beneficiary in more than one Assessment Type category. The Center for Medicare and Medicaid Services (CMS) team may also count a beneficiary in more than one chronic condition category.
‡  MDS = Minimum Data Set: Assessment data collected by nursing homes.
▲ OASIS = Outcome and Assessment Information Set: Assessment data collected by home health agencies.
# IRF-PAI = Inpatient Rehabilitation Facility Patient Assessment Instrument: Assessment data collected by inpatient rehabilitation facilities.
^ Swing bed = Assessment data collected by swing bed facilities.
NOTE: The n for each condition category considers fee-for-service (FFS) administrative claims only. The beneficiaries included in these counts may have any combination of Medicare coverage, including full or partial FFS and/or health maintenance organization (HMO) coverage. The application of coverage restrictions/criteria will impact the size of these samples.
*** Full or nearly FFS indicates the beneficiary had 11 or 12 months of both Part A and Part B FFS coverage, or for persons who died during the year, from January 1 until date of death. Non-FFS indicates the beneficiary had less than 11 months of Part A and Part B FFS coverage and includes people with one month or more of health maintenance organization (HMO) coverage. Some FFS beneficiaries are participants in case or disease management demonstration projects (effective 2005 forward). The Chronic Conditions Warehouse (CCW) team does not consider these beneficiaries to have HMO coverage during these months.