TABLE 16 .

] Difference in Hospital Discharges for Pulmonary Hypertension as Any Listed ICD-9-CM Diagnosis Using Seven vs 15 Diagnoses by Age Group: United States, 2010

Age Groups	Pulmonary Hypertension Discharges 2010 (Seven Diagnoses)	Pulmonary Hypertension Discharges 2010 (15 Diagnoses)	Percent Difference
Total	472	729	54
< 35 y	27a	30a	10
35-44 y	19	25	33
45-54 y	41	58	43
55-64 y	61	93	52
65-74 y	99	155	57
75-84 y	130	210	62
≥ 85 y	96	158	66

Numbers are presented in thousands. See Table 2 legend for expansion of abbreviations. (Adapted with permission from Centers for Disease Control and Prevention, National Center for Health Statistics.¹¹)

^aEstimate does not meet standards of reliability or precision. The National Center for Health Statistics considers an estimate to be reliable if it is based on at least 30 discharge records and it has a relative SE of ≤ 30% (ie, the SE is ≤ 30% of the estimate).