Table 2. Number of patients and crude and age-standardized prevalence rate for the four main classification codes associated with elbow pain

Disease code	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020
No. of patients
M771	483,390	511,337	536,185	553,261	580,598	609,741	637,811	659,228	663,461	640,766
M770	109,225	121,141	130,428	138,852	147,458	160,989	171,644	181,872	190,606	189,509
S53	345,691	344,979	362,796	351,008	349,001	347,634	343,633	341,584	336,487	305,408
G56	200,321	219,814	227,589	230,293	230,867	239,721	247,695	246,689	243,928	229,781
Crude prevalence rate per 100,000 persons
M771	969.11	1,015.66	1,060.51	1,089.89	1,139.51	1,192.93	1,244.98	1,285.02	1,292.35	1,247.86
M770	218.98	240.62	257.97	273.53	289.41	314.97	355.04	354.52	371.28	369.06
S53	693.05	685.23	717.57	691.46	684.96	680.13	670.76	665.84	655.44	594.77
G56	401.61	436.61	450.15	453.66	453.11	469.00	483.49	480.87	475.15	447.49
Age-standardized prevalence rate*
M771	96.18	99.29	102.17	105.44	107.60	111.73	116.10	119.16	119.05	114.21
M770	21.66	23.40	24.66	26.26	26.98	29.04	30.66	32.15	33.34	32.82
S53	69.76	69.42	73.01	71.18	70.28	69.99	69.30	65.20	68.37	61.46
G56	39.95	42.22	42.75	43.30	41.88	42.90	43.87	43.10	42.02	39.15

2010 Standard population in South Korea as the control.