Principal Procedure Code & Name Volume Percent Cumulative
80.50—EXCISION OR DESTRUCTION OF INTERVERTEBRAL DISC NOS
29
0.15
0.15
80.51—EXCISION OF INTERVERTEBRAL DISC
19,134
99.85
100.00
Total
19,163
100.00


Volume of Procedures
Number of Hospitals
Percent of Hospital Total
Cumulative Percent of Hospital Total
1
6
3.73
3.73
2
5
3.11
6.83
3
8
4.97
11.80
4
2
1.24
13.04
6
3
1.86
14.91
7
2
1.24
16.15
8
5
3.11
19.25
9
4
2.48
21.74
10
1
0.62
22.36
11
1
0.62
22.98
12
1
0.62
23.60
13
3
1.86
25.47
14
2
1.24
26.71
15
4
2.48
29.19
16
2
1.24
30.43
17
1
0.62
31.06
18
7
4.35
35.40
19
4
2.48
37.89
20
1
0.62
38.51
21
1
0.62
39.13
22
1
0.62
39.75
28
2
1.24
40.99
29
1
0.62
41.61
30
1
0.62
42.24
32
1
0.62
42.86
33
1
0.62
43.48
34
2
1.24
44.72
35
1
0.62
45.34
36
1
0.62
45.96
38
1
0.62
46.58
39
1
0.62
47.20
40
1
0.62
47.83
45
1
0.62
48.45
51
1
0.62
49.07
56
1
0.62
49.69
57
1
0.62
50.31
61
2
1.24
51.55
62
1
0.62
52.17
65
2
1.24
53.42
66
2
1.24
54.66
67
1
0.62
55.28
68
1
0.62
55.90
69
1
0.62
56.52
75
1
0.62
57.14
78
1
0.62
57.76
79
2
1.24
59.01
81
1
0.62
59.63
82
3
1.86
61.49
87
1
0.62
62.11
88
1
0.62
62.73
93
1
0.62
63.35
100
1
0.62
63.98
101
1
0.62
64.60
103
1
0.62
65.22
112
1
0.62
65.84
116
1
0.62
66.46
122
1
0.62
67.08
133
1
0.62
67.70
135
1
0.62
68.32
136
1
0.62
68.94
140
1
0.62
69.57
144
1
0.62
70.19
148
1
0.62
70.81
149
1
0.62
71.43
150
1
0.62
72.05
154
3
1.86
73.91
155
1
0.62
74.53
163
1
0.62
75.16
171
1
0.62
75.78
174
2
1.24
77.02
178
1
0.62
77.64
185
1
0.62
78.26
191
1
0.62
78.88
192
1
0.62
79.50
200
1
0.62
80.12
207
2
1.24
81.37
215
1
0.62
81.99
227
1
0.62
82.61
247
1
0.62
83.23
251
1
0.62
83.85
262
1
0.62
84.47
283
1
0.62
85.09
293
1
0.62
85.71
295
1
0.62
86.34
306
1
0.62
86.96
317
1
0.62
87.58
337
1
0.62
88.20
340
1
0.62
88.82
342
1
0.62
89.44
349
1
0.62
90.06
355
1
0.62
90.68
366
1
0.62
91.30
390
1
0.62
91.93
420
1
0.62
92.55
429
1
0.62
93.17
431
1
0.62
93.79
452
1
0.62
94.41
454
1
0.62
95.03
501
1
0.62
95.65
519
1
0.62
96.27
550
1
0.62
96.89
575
1
0.62
97.52
579
1
0.62
98.14
594
1
0.62
98.76
599
1
0.62
99.38
606
1
0.62
100.00
Total
161
100.00
 
Volume of Procedures Number of Doctors Percent of Doctors Total Cumulative Percent of Doctors Total
1
212
35.10
35.10
2
36
5.96
41.06
3
16
2.65
43.71
4
12
1.99
45.70
5
11
1.82
47.52
6
8
1.32
48.84
7
10
1.66
50.50
8
13
2.15
52.65
9
7
1.16
53.81
10
3
0.50
54.30
11
3
0.50
54.80
12
5
0.83
55.63
13
8
1.32
56.95
14
3
0.50
57.45
15
5
0.83
58.28
16
5
0.83
59.11
17
5
0.83
59.93
18
2
0.33
60.26
19
3
0.50
60.76
20
6
0.99
61.75
21
1
0.17
61.92
22
3
0.50
62.42
23
3
0.50
62.91
24
2
0.33
63.25
25
6
0.99
64.24
26
1
0.17
64.40
27
6
0.99
65.40
28
4
0.66
66.06
29
1
0.17
66.23
30
2
0.33
66.56
31
3
0.50
67.05
32
1
0.17
67.22
33
1
0.17
67.38
34
3
0.50
67.88
35
4
0.66
68.54
36
3
0.50
69.04
37
4
0.66
69.70
38
6
0.99
70.70
39
4
0.66
71.36
40
2
0.33
71.69
41
3
0.50
72.19
42
4
0.66
72.85
43
6
0.99
73.84
44
3
0.50
74.34
45
3
0.50
74.83
46
1
0.17
75.00
47
1
0.17
75.17
48
1
0.17
75.33
49
4
0.66
75.99
50
2
0.33
76.32
51
8
1.32
77.65
52
1
0.17
77.81
53
1
0.17
77.98
54
3
0.50
78.48
56
3
0.50
78.97
57
1
0.17
79.14
58
4
0.66
79.80
59
1
0.17
79.97
61
2
0.33
80.30
62
1
0.17
80.46
64
3
0.50
80.96
65
2
0.33
81.29
66
4
0.66
81.95
67
1
0.17
82.12
68
3
0.50
82.62
69
2
0.33
82.95
71
6
0.99
83.94
72
4
0.66
84.60
73
1
0.17
84.77
75
2
0.33
85.10
76
3
0.50
85.60
78
1
0.17
85.76
79
1
0.17
85.93
80
1
0.17
86.09
82
1
0.17
86.26
83
2
0.33
86.59
84
1
0.17
86.75
86
1
0.17
86.92
87
1
0.17
87.09
88
2
0.33
87.42
89
2
0.33
87.75
90
2
0.33
88.08
91
3
0.50
88.58
92
4
0.66
89.24
93
1
0.17
89.40
94
2
0.33
89.74
95
1
0.17
89.90
96
2
0.33
90.23
98
4
0.66
90.89
99
2
0.33
91.23
100
2
0.33
91.56
101
2
0.33
91.89
103
1
0.17
92.05
104
1
0.17
92.22
106
3
0.50
92.72
107
1
0.17
92.88
108
1
0.17
93.05
109
1
0.17
93.21
110
1
0.17
93.38
111
1
0.17
93.54
112
2
0.33
93.87
114
1
0.17
94.04
115
1
0.17
94.21
117
2
0.33
94.54
118
1
0.17
94.70
120
1
0.17
94.87
124
2
0.33
95.20
129
3
0.50
95.70
130
1
0.17
95.86
131
2
0.33
96.19
133
1
0.17
96.36
139
1
0.17
96.52
143
1
0.17
96.69
144
1
0.17
96.85
145
1
0.17
97.02
147
1
0.17
97.19
148
1
0.17
97.35
154
1
0.17
97.52
156
1
0.17
97.68
159
1
0.17
97.85
173
1
0.17
98.01
177
1
0.17
98.18
178
1
0.17
98.34
200
1
0.17
98.51
203
1
0.17
98.68
206
1
0.17
98.84
207
1
0.17
99.01
208
1
0.17
99.17
232
1
0.17
99.34
238
1
0.17
99.50
241
1
0.17
99.67
258
1
0.17
99.83
323
1
0.17
100.00
Total
604
100.00
 

Hospitals Volume
Percentiles
Volumes
Four Smallest Volumes
1%
1
1
5%
2
1
10%
3
1
Hospitals(Obs.)
161
25%
13
1
Sum of Wgt.
161
1
50%
57
Mean
119.0248
Four Largest Volumes
Std. Dev.
152.529
75%
163
579
90%
349
594
Variance
23,265.09
95%
454
599
Skewness
1.63714
99%
599
606
Kurtosis
4.88633
 
Doctors Volume
Percentiles
Volumes
Four Smallest Volumes
1%
1
1
5%
1
1
10%
1
1
Doctors(Obs.)
604
25%
1
1
Sum of Wgt.
604
1
50%
7
Mean
31.29801
Four Largest Volumes
Std. Dev.
46.38162
75%
46.5
238
90%
96
241
Variance
2,151.254
95%
124
258
Skewness
2.202245
99%
207
323
Kurtosis
9.063827




 
 

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