Section 2: Inpatient Hospital Stays by Diagnosis PDF

EXHIBIT 2.1 Most Frequent Principal Diagnoses PDF
EXHIBIT 2.2 Most Frequent Principal Diagnoses by Age PDF
EXHIBIT 2.3 Most Frequent Principal Diagnoses by Gender PDF
EXHIBIT 2.4 Most Frequent Comorbidities PDF

• Conditions related to pregnancy and childbirth were the reason for more than 1 out of every 5 female hospitalizations in 2007. When combined with stays for newborn infants, these hospitalizations accounted for one-quarter of all male and female stays.
• Maternal discharges increased to 5.0 million in 2007, a 16-percent increase since 1997.
• Previous C-sections increased 107 percent between 1997 and 2007.
• Stays with high blood pressure during pregnancy increased by 28 percent between 1997 and 2007.
• Stays with umbilical cord complications declined by 15 percent.
• Infant hospitalizations increased to 4.7 million in 2007, a 21-percent increase since 1997.
• Circulatory conditions were the most frequent major cause of hospital stays in 2007, accounting for 16 percent of all discharges. Five circulatory conditions were among the top 10 most frequent principal diagnoses in 2007.
• Stays for non-specific chest pain increased by 47 percent between 1997 and 2007 while those for irregular heart beat increased by 28 percent.
• Stays for coronary artery disease declined 31 percent and for heart attack by 15 percent.
• Stays for congestive heart failure changed very little from 1997 to 2007.
• Ranking 6th in 1997, hospital stays for acute cerebrovascular disease dropped to 15th in 2007 as stays declined 14 percent.
• Several frequently occurring infections were among the most rapidly increasing reasons for hospitalizations between 1997 and 2007.
• Stays for skin and subcutaneous tissue infections rose 90 percent for men and 75 percent for women.
• Septicemia increased by 63 percent—up 77 percent among men and 53 percent among women.
• Among adults 85 and over, septicemia (up 64 percent) and urinary tract infections (up 58 percent) increased at more than twice the rate of all hospitalizations for this age group.
• Several conditions were common among children and young adults.
• Asthma, the most common reason for hospital admission among children 1–17, declined by 28 percent between 1997 and 2007.
• Appendicitis, another common reason for hospital stays for children 1-17, accounted for 5 percent of discharges in this age group in 2007, increasing by 20 percent between 1997 and 2007.
• Depression and bipolar disorders (mood disorders), among the most common diagnoses for children and young adults, increased 27 percent for children 1-17 and 15 percent for adults 18-44 between 1997 and 2007. Among all ages, mood disorders grew by 32 percent for men and by 13 percent for women over the same period.
• Degenerative joint disease (osteoarthritis) increased 95 percent over the 1997-2007 period. This condition caused many more hospitalizations for females (498,000 discharges) than for males (314,000 discharges) in 2007.
• Hypertension was a comorbidity in 35 percent of all hospital stays in 2007, diabetes in 17 percent of stays, depression in 7 percent stays, and alcohol abuse, drug abuse, and/or psychoses each in 3 percent of stays.
• Chronic conditions were a principal or secondary diagnosis for 74 percent of all hospital stays in 2007.

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