Table 2 Number (% changea) of outpatient visits (×1000) of four diabetes-related coding practices in outpatient claims by the same physician in tertiary medical centers (intervention group) and clinics (control group) from 2016Q1 to 2017Q3 in Taiwan (ICD-10-CM code E119 is the Outpatient Volume Control Program (OVCP) monitoring code and E110-E118 are non-OVCP monitoring codes)
2016Q1 | 2016Q2 | 2016Q3 | 2016Q4 | 2017Q1 | 2017Q2 | 2017Q3 | 95% CI of 2017Q3 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Coding practice 1: E119 in primary diagnosis | |||||||||||||||
Medical centers | 270 | (0%) | 281 | (+ 4%) | 270 | (0%) | 252 | (−7%) | 186 | (−31%) | 94 | (−65%) | 72 | (−73%) | − 72.8% to − 74.0% |
Clinics | 575 | (0%) | 609 | (+ 6%) | 610 | (+ 6%) | 566 | (−2%) | 511 | (−11%) | 492 | (−15%) | 475 | (−17%) | −17.4% to − 17.5% |
Coding practice 2: E119 in secondary diagnosis | |||||||||||||||
Medical centers | 304 | (0%) | 318 | (+ 5%) | 305 | (0%) | 287 | (−5%) | 273 | (−10%) | 258 | (−15%) | 242 | (−20%) | −20.3% to − 20.5% |
Clinics | 259 | (0%) | 275 | (+ 6%) | 272 | (+ 5%) | 250 | (−3%) | 219 | (−15%) | 208 | (−20%) | 198 | (−24%) | − 23.5% to − 23.8% |
Coding practice 3: E110 − E118 in primary diagnosis | |||||||||||||||
Medical centers | 198 | (0%) | 222 | (+ 13%) | 219 | (+ 11%) | 208 | (+ 5%) | 234 | (+ 18%) | 285 | (+ 44%) | 289 | (+ 46%) | 46.0 to 46.6% |
Clinics | 139 | (0%) | 154 | (+ 11%) | 157 | (+ 13%) | 153 | (+ 10%) | 138 | (−1%) | 137 | (−2%) | 136 | (−2%) | −2.2% to − 2.2% |
Coding practice 4: E110 − E118 in secondary diagnosis | |||||||||||||||
Medical centers | 112 | (0%) | 122 | (+ 8%) | 119 | (+ 6%) | 111 | (−1%) | 99 | (−11%) | 103 | (−8%) | 105 | (−6%) | −5.8% to −5.9% |
Clinics | 41 | (0%) | 45 | (+ 11%) | 47 | (+ 14%) | 43 | (+ 6%) | 37 | (−8%) | 37 | (−9%) | 36 | (−12%) | −11.5% to − 11.8% |