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Accuracy of co-diagnosis codes to exclude hypoglycemia for ICD-9-CM code 250.8 |
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| ICD-9-CM code* |
n (%) |
Valid exclusion (%) |
PPV (95%CI) |
|
|
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| 681.xx (cellulitis fingers/toes) |
9 (4) |
9 (5) |
100% |
| 682.xx (other cellulitis) |
86 (43) |
78 (41) |
91% (83–96) |
| 686.90 (local skin infection) |
6 (3) |
6 (3) |
100% |
| 707.xx (ulcers of lower limb) |
92 (46) |
90 (47) |
98% (94–100) |
| 730.27 (osteomyelitis ankle/foot) |
2 (1) |
2 (1) |
100% |
| 731.8 (other osteomyelitis) |
6 (3) |
6 (3) |
100% |
| Total |
201 |
191 |
95% (91–98) |
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ICD-9-CM – International Classification of Diseases, Ninth Revision; n – number; CI – confidence interval; PPV – positive predictive value. * No observations for 259.8 (secondary diabetic glycogenosis), 272.7 (diabetic lipidosis), or 709.3 (Oppenheim-Urbach syndrome) | |||
Ginde et al. BMC Endocrine Disorders 2008 8:4 doi:10.1186/1472-6823-8-4 |
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