Volume 5, Number 6—December 1999
Supplementing Tuberculosis Surveillance with Automated Data from Health Maintenance Organizations
|Screening criteria that include a TB diagnosis code or multiple anti-TB drugs|
|Reasons why non-TB cases met screening criteria||Two or more anti-TB drugsa||Diagnosis codeb for active TB||Diagnosis codeb for pulmonary TB||Diagnosis codeb for TB, a microbiology codec, and a radiology coded||At least one anti-TB druga and an ICD-9 diagnosis code for TB|
|Active TB diagnosed outside study window||9 (13%)||0||0||0||0|
|Suspected active TB||26 (37%)||2 (67%)||4 (5%)||19 (58%)||6 (86%)|
|TB prophylaxis||11 (15%)||0||0||0||0|
|Prenatal TB screening||0||0||57 (76%)||0||0|
|Prior history of TB||0||0||5 (7%)||7 (21%)||0|
|Other mycobacterial infections||23 (32%)||0||0||0||0|
|Treatment of other conditions||2 (3%)||0||0||0||0|
|No documentation of reason in HMO medical record||0||1 (33%)||9 (12%)||7 (21%)||1 (14%)|
|Total no. without incident active TB||71||3||75||33||7|
aPharmacy dispensing data; antituberculosis drugs include isoniazid, rifampin, pyrazinamide, ethambutol, streptomycin,capreomycin, kanamycin, ethionamide, para-aminosalicyclic acid, and cycloserine.
bAmbulatory codes were obtained from automated ambulatory records in the staff model division and from claims in the network and group model division.
cMicrobiology codes include COSTAR (coding system for automated ambulatory-patient records ) or ICD-9CM (International Classification of Diseases, 9th Revision Clinical Modification) procedure codes for acid fast bacilli smear, culture and sensitivities and microscopy examination of sputum.
dRadiology codes include current procedures terminology (CPT), COSTAR, or ICD-9 procedure codes for chest radiograph,thoracic computer- assisted tomography (CT), or thoracic magnetic resonance imaging (MRI).
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