Principal Procedure Code & Name Volume Percent Cumulative
81.00—SPINAL FUSION NOS
26
0.19
0.19
81.01—ATLAS-AXIS SPINAL FUSION (CRANIOCERVICAL FUSION)
96
0.70
0.89
81.02—OTHER CERVICAL SPINAL FUSION ANTERIOR TECHNIQUE
5,683
41.51
42.40
81.03—OTHER CERVICAL SPINAL FUSION POSTERIOR TECHNIQUE
698
5.10
47.49
81.04—DORSAL/DORSALUMBAR SPINAL FUSION ANTERIOR TECHNIQUE
425
3.10
50.60
81.05—DORSAL/DORSALUMBAR SPINAL FUSION POSTERIOR TECHNIQUE
882
6.44
57.04
81.06—LUMBAR/LUMBOSACRAL SPINAL FUSION ANTERIOR TECHNIQUE
1,064
7.77
64.81
81.07—LUMBAR/LUMBOSACRAL SPINAL FUSION LATERAL TRANSVERSE PROCESS TECHNIQUE
413
3.02
67.83
81.08—LUMBAR/LUMBOSACRAL SPINAL FUSION POSTERIOR TECHNIQUE
4,405
32.17
100.00
Total
13,692
100.00


Volume of Procedures
Number of Hospitals
Percent of Hospital Total
Cumulative Percent of Hospital Total
1
7
5.00
5.00
2
6
4.29
9.29
3
2
1.43
10.71
4
6
4.29
15.00
5
2
1.43
16.43
6
3
2.14
18.57
7
3
2.14
20.71
8
1
0.71
21.43
9
1
0.71
22.14
10
3
2.14
24.29
11
1
0.71
25.00
12
1
0.71
25.71
14
2
1.43
27.14
15
2
1.43
28.57
16
1
0.71
29.29
17
1
0.71
30.00
18
1
0.71
30.71
20
5
3.57
34.29
23
1
0.71
35.00
24
3
2.14
37.14
26
1
0.71
37.86
29
1
0.71
38.57
30
1
0.71
39.29
33
1
0.71
40.00
35
1
0.71
40.71
36
1
0.71
41.43
38
1
0.71
42.14
40
1
0.71
42.86
43
2
1.43
44.29
45
2
1.43
45.71
48
1
0.71
46.43
50
2
1.43
47.86
52
1
0.71
48.57
57
5
3.57
52.14
60
2
1.43
53.57
61
1
0.71
54.29
64
1
0.71
55.00
65
1
0.71
55.71
66
1
0.71
56.43
67
1
0.71
57.14
68
2
1.43
58.57
71
1
0.71
59.29
72
2
1.43
60.71
75
1
0.71
61.43
77
1
0.71
62.14
79
1
0.71
62.86
81
1
0.71
63.57
83
2
1.43
65.00
89
1
0.71
65.71
91
1
0.71
66.43
96
1
0.71
67.14
99
2
1.43
68.57
100
1
0.71
69.29
101
1
0.71
70.00
104
1
0.71
70.71
112
1
0.71
71.43
113
1
0.71
72.14
114
1
0.71
72.86
116
1
0.71
73.57
119
1
0.71
74.29
121
1
0.71
75.00
124
1
0.71
75.71
130
1
0.71
76.43
132
1
0.71
77.14
137
1
0.71
77.86
152
1
0.71
78.57
159
1
0.71
79.29
166
1
0.71
80.00
176
2
1.43
81.43
179
1
0.71
82.14
182
1
0.71
82.86
195
1
0.71
83.57
202
1
0.71
84.29
203
1
0.71
85.00
216
2
1.43
86.43
226
1
0.71
87.14
246
1
0.71
87.86
249
1
0.71
88.57
259
1
0.71
89.29
272
1
0.71
90.00
277
1
0.71
90.71
283
1
0.71
91.43
285
1
0.71
92.14
295
1
0.71
92.86
308
1
0.71
93.57
313
1
0.71
94.29
314
1
0.71
95.00
386
1
0.71
95.71
391
1
0.71
96.43
416
1
0.71
97.14
424
1
0.71
97.86
602
1
0.71
98.57
614
1
0.71
99.29
641
1
0.71
100.00
Total
140
100.00
 
Volume of Procedures Number of Doctors Percent of Doctors Total Cumulative Percent of Doctors Total
1
214
35.97
35.97
2
45
7.56
43.53
3
15
2.52
46.05
4
14
2.35
48.40
5
13
2.18
50.59
6
13
2.18
52.77
7
9
1.51
54.29
8
9
1.51
55.80
9
7
1.18
56.97
10
7
1.18
58.15
11
7
1.18
59.33
12
10
1.68
61.01
13
5
0.84
61.85
14
7
1.18
63.03
15
6
1.01
64.03
16
3
0.50
64.54
17
5
0.84
65.38
18
3
0.50
65.88
19
2
0.34
66.22
20
1
0.17
66.39
21
7
1.18
67.56
22
4
0.67
68.24
23
7
1.18
69.41
24
3
0.50
69.92
25
2
0.34
70.25
26
3
0.50
70.76
27
3
0.50
71.26
28
4
0.67
71.93
29
5
0.84
72.77
30
5
0.84
73.61
31
3
0.50
74.12
32
3
0.50
74.62
33
1
0.17
74.79
34
8
1.34
76.13
35
3
0.50
76.64
36
1
0.17
76.81
37
4
0.67
77.48
38
6
1.01
78.49
39
3
0.50
78.99
40
3
0.50
79.50
41
2
0.34
79.83
42
3
0.50
80.34
43
2
0.34
80.67
44
3
0.50
81.18
45
2
0.34
81.51
46
3
0.50
82.02
47
2
0.34
82.35
48
4
0.67
83.03
49
7
1.18
84.20
50
4
0.67
84.87
51
5
0.84
85.71
52
1
0.17
85.88
53
1
0.17
86.05
54
2
0.34
86.39
55
1
0.17
86.55
56
2
0.34
86.89
57
1
0.17
87.06
58
4
0.67
87.73
59
4
0.67
88.40
63
2
0.34
88.74
64
1
0.17
88.91
65
3
0.50
89.41
66
3
0.50
89.92
67
1
0.17
90.08
68
2
0.34
90.42
69
2
0.34
90.76
70
4
0.67
91.43
73
4
0.67
92.10
75
1
0.17
92.27
77
2
0.34
92.61
78
1
0.17
92.77
79
2
0.34
93.11
80
1
0.17
93.28
81
2
0.34
93.61
82
1
0.17
93.78
87
3
0.50
94.29
88
1
0.17
94.45
92
1
0.17
94.62
94
1
0.17
94.79
96
1
0.17
94.96
97
2
0.34
95.29
100
3
0.50
95.80
101
2
0.34
96.13
108
1
0.17
96.30
111
1
0.17
96.47
114
1
0.17
96.64
117
1
0.17
96.81
118
2
0.34
97.14
119
1
0.17
97.31
121
1
0.17
97.48
127
1
0.17
97.65
131
1
0.17
97.82
134
1
0.17
97.98
139
1
0.17
98.15
141
1
0.17
98.32
143
1
0.17
98.49
158
1
0.17
98.66
163
1
0.17
98.82
174
1
0.17
98.99
175
1
0.17
99.16
177
1
0.17
99.33
182
1
0.17
99.50
194
1
0.17
99.66
213
1
0.17
99.83
251
1
0.17
100.00
Total
595
100.00
 

Hospitals Volume
Percentiles
Volumes
Four Smallest Volumes
1%
1
1
5%
1.5
1
10%
3
1
Hospitals(Obs.)
140
25%
11.5
1
Sum of Wgt.
140
1
50%
57
Mean
97.8
Four Largest Volumes
Std. Dev.
125.2229
75%
122.5
424
90%
274.5
602
Variance
15,680.77
95%
350
614
Skewness
2.149175
99%
614
641
Kurtosis
8.167958
 
Doctors Volume
Percentiles
Volumes
Four Smallest Volumes
1%
1
1
5%
1
1
10%
1
1
Doctors(Obs.)
595
25%
1
1
Sum of Wgt.
595
1
50%
5
Mean
22.73277
Four Largest Volumes
Std. Dev.
35.38753
75%
34
182
90%
67
194
Variance
1,252.277
95%
97
213
Skewness
2.522231
99%
175
251
Kurtosis
10.9332




 
 

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