Chart 2b. All-payer Consumer Price Index and private-insurance-only indexes for outpatient hospital services, January 2016–March 2020
Date	Comparison unchained Lowe (insurance)	Consumer Price Index (all payers)	Medical claims unchained Lowe (insurance)	Medical claims mixed quantity (insurance)	Medical claims chained Törnqvist (insurance)
Jan 2016	100.00	100.00	100.00	100.00	100.00
Feb 2016	99.99	100.39	100.52	100.28	100.21
Mar 2016	99.84	100.18	100.61	100.86	100.47
Apr 2016	98.74	100.24	100.71	100.82	100.27
May 2016	99.25	100.52	100.35	100.38	100.01
Jun 2016	99.28	100.46	101.36	101.44	100.56
Jul 2016	100.01	100.81	102.08	102.03	101.55
Aug 2016	101.59	102.19	102.13	102.20	102.17
Sep 2016	102.11	102.48	102.20	102.16	101.94
Oct 2016	101.97	102.67	102.87	102.74	102.22
Nov 2016	102.46	102.61	102.90	103.15	102.60
Dec 2016	103.42	102.60	102.93	103.62	102.23
Jan 2017	102.82	103.36	102.05	103.27	101.97
Feb 2017	102.67	104.73	102.81	103.45	102.46
Mar 2017	102.53	104.95	102.92	104.31	102.67
Apr 2017	103.11	106.23	103.51	105.19	103.25
May 2017	102.12	106.11	103.06	104.19	102.93
Jun 2017	101.86	106.61	104.08	105.18	104.28
Jul 2017	101.94	106.96	104.21	104.62	103.91
Aug 2017	103.46	106.83	104.49	104.81	103.92
Sep 2017	101.55	107.15	105.40	106.54	105.08
Oct 2017	102.28	107.62	105.74	106.28	105.08
Nov 2017	102.17	107.46	105.90	106.10	104.99
Dec 2017	102.14	107.56	106.06	106.22	104.89
Jan 2018	106.34	109.60	106.31	106.76	105.24
Feb 2018	106.69	109.83	106.98	107.39	106.00
Mar 2018	107.14	110.34	107.34	107.43	106.38
Apr 2018	107.27	110.51	106.83	107.03	106.09
May 2018	107.38	110.62	106.36	106.55	105.73
Jun 2018	107.58	111.21	107.19	107.33	106.40
Jul 2018	107.94	111.56	107.57	107.58	106.74
Aug 2018	107.90	110.92	108.22	107.98	107.47
Sep 2018	107.66	110.60	108.99	109.18	108.11
Oct 2018	109.25	110.81	109.60	109.76	108.87
Nov 2018	109.60	111.63	109.88	110.03	108.83
Dec 2018	109.60	111.89	110.30	110.52	109.36
Jan 2019	110.49	112.27	111.30	114.27	111.79
Feb 2019	111.63	112.16	111.44	114.43	111.52
Mar 2019	110.46	112.24	110.32	112.94	110.72
Apr 2019	110.37	111.56	110.65	112.95	110.94
May 2019	110.16	111.58	111.21	112.95	111.55
Jun 2019	111.66	111.28	112.26	112.74	112.27
Jul 2019	111.96	111.97	112.34	112.88	112.28
Aug 2019	112.89	113.21	112.80	113.22	113.02
Sep 2019	113.12	112.99	113.08	114.45	113.11
Oct 2019	113.72	114.08	112.86	114.67	112.46
Nov 2019	113.84	114.10	114.02	117.27	113.85
Dec 2019	113.18	114.12	113.55	117.90	113.39
Jan 2020	111.69	115.79	112.67	117.79	113.25
Feb 2020	112.74	116.12	112.97	116.07	113.04
Mar 2020	113.61	116.28	114.50	117.62	114.52
Source: U.S. Bureau of Labor Statistics.