Figure 2. Frequency and total charges of hospitalizations in the United States during 2003–2012 for 13 of the World Health Organization (WHO)–designated neglected tropical diseases (NTDs) and malaria. Estimates were determined by using the Nationwide Inpatient Sample, which codes diagnoses according to the International Classification of Diseases, 9th Revision, Clinical Modification. Frequency of and total charges for hospitalizations for the other NTDs (i.e., Buruli ulcer, rabies, African trypanomiasis, and dracunculiasis) are not shown because there were too few hospitalizations for these diseases for accurate estimation. Frequency and total charges of hospitalizations for malaria, although it is not one of the WHO–designated NTDs, are shown for comparison.