In 2010, the final year of the aggregated data used in the analysis by Ford et al,6 the total estimated medical expenditures were $1,263 billion for 309 million people in the United States.8 For the target population (adults ≥18 years old), the total estimated medical expenditures were $1,148 billion for 233 million people. The analysis included anyone in the survey with International Classification of Diseases, Ninth Revision, Clinical Modification code 127 for COPD. A person would be coded as such if they reported (1) ever having been diagnosed with the condition, (2) the condition was the reason for a particular medical event, (3) the condition was the reason for one or more episodes of disability days, or (4) the condition was “bothering” the person during the reference period. Overall, 10.3 million adults with COPD, as described, incurred total expenses of $101 billion, of which $72.7 billion was attributable to COPD, with the remaining amount attributable to disease other than COPD.6 Thus, the COPD population made up about 4.4% of the adult population, but incurred about 8.8% of the total costs. In the recently published surveillance summary,2 13.7 million people reported a COPD diagnosis, which is 33% higher than the number incurring expenses in this study by Ford et al.6 This is presumably because they had no COPD expenses, but it could also be that they had no events attributed to COPD (because they very likely had some expense-incurring events).