Volume 11, Number 7—July 2005
Letter
Comparing Diagnostic Coding and Laboratory Results
, Anuli Ajene*, Mark A. Malakooti*, Joel C. Gaydos†, Victor H. MacIntosh†, and Bruce K. Bohnker*1
Table
Clinical records with associated laboratory test results*
| Disease† | Inpatient records (SIDR) |
Outpatient records (SADR) |
||||
|---|---|---|---|---|---|---|
| No. records selected | No. tests ordered (%) | No. confirmatory results (%)‡ | No. records selected | No. tests ordered (%)§ | No. confirmatory results (%)‡¶ | |
| Malaria | 3 | 3 (100.0) | 1 (33.3) | 17 | 8 (47.1) | 1 (5.9) |
| Syphilis | 1 | 1 (100.0) | 1 (100.0) | 44 | 31 (70.4) | 12 (27.3) |
| Acute hepatitis B | 16 | 8 (50.0) | 1 (6.3) | 39 | 32 (82.1) | 5 (12.8) |
| Lyme disease | 1 | 1 (100.0) | 1 (100.0) | 55 | 29 (52.7) | 6 (10.9) |
| Total | 21 | 13 (61.9) | 4 (19.0) | 155 | 100 (64.5) | 24 (15.5) |
*This table presents Standard Inpatient Data Records (SIDR) and Standard Ambulatory Data Records (SADR) studied and percentages with appropriate laboratory tests ordered and confirmatory laboratory test results.
†International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) codes: malaria, 084.0–084.6; syphilis, 090, 091, 095, 096; acute hepatitis B, 070.30, 070.31; Lyme disease, 088.81.
‡Percentages reported reflect the proportion of records that had positive confirmatory laboratory results.
§Summary χ2 = 11.5; p = 0.01.
¶Summary χ2= 7.0; p = 0.07.
1Preliminary findings were presented at the US Army Force Health Protection Conference, August 2003, Albuquerque, NM; the International Conference on Emerging Infectious Diseases, February 2004, Atlanta, GA; and the Navy Occupational Health and Preventive Medicine Workshop, March 2004, Norfolk, VA.