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Histoplasmosis-related healthcare use, diagnosis, and treatment in a commercially insured population, United States
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March 03 2020
Source: Clin Infect Dis. 70(6):1003-1010
Details:
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Alternative Title:Clin Infect Dis
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Description:Background:
Infections with Histoplasma can range from asymptomatic to life-threatening acute pulmonary or disseminated disease. Histoplasmosis can be challenging to diagnose and is widely under-recognized. We analyzed insurance claims data to better characterize histoplasmosis testing and treatment practices and its burden on patients.
Methods:
We used the IBM® MarketScan® Research Databases to identify patients with histoplasmosis (International Classification of Diseases, Ninth Revision, Clinical Modification [ICD-9-CM] codes 115.00–115.99) during 2012–2014. We analyzed claims in the 3 months before to the 1 year after diagnosis and examined differences between probable (hospitalized or >1 outpatient visit) and suspect (1 outpatient visit) patients.
Results:
Among 1,935 patients (943 probable, 922 suspect), 54% had codes for symptoms or findings consistent with histoplasmosis and 35% had ≥2 healthcare visits in the 3 months before diagnosis. Overall, 646 (33%) had any fungal-specific laboratory test: histoplasmosis antibody test (n= 349, 18%), Histoplasma antigen test (n=349, 18%), fungal smear (n=294, 15%), or fungal culture (n=223, 12%); 464 (24%) had a biopsy. Forty-nine percent of probable patients and 10% of suspect patients were prescribed antifungal medication in the outpatient setting. Total, 19% were hospitalized. Patients’ last histoplasmosis-associated healthcare visits occurred a median of 6 months after diagnosis.
Conclusions:
Some histoplasmosis patients experienced severe disease, apparent diagnostic delays, and prolonged illness, whereas other patients lacked symptoms and were likely diagnosed incidentally (e.g., via biopsy). Low rates of histoplasmosis-specific testing also suggest incidental diagnoses and low provider suspicion, highlighting the need for improved awareness about this disease.
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Pubmed ID:31037290
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Pubmed Central ID:PMC6821563
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