Household data are collected as of March. As stated in the Census's Source and Accuracy of Estimates for Income, Poverty, and Health Insurance Coverage in the United States: 2011 (http://www.census.gov/hhes/www/p60_243sa.pdf) Estimation of Median Incomes. The Census Bureau has changed the methodology for computing median income over time.
Coding CAD. The ICD-9-CM diagnosis codes for CAD are classified to subcategory 414.0x. Coding CAD requires documentation of the coronary artery involved and whether or not it is of a native artery, an artery of a transplanted heart, or a bypass graft. The fifth-digit subclassification identifies the coronary artery involved.
Code Titles Both ICD-9-CM and ICD-10-PCS codes are provided with abbreviated code titles, which are necessary to accommodate the format of the manual. An abbreviation key is provided in appendix B. The ICD-10-PCS code titles are the official 60-character abbreviations released by the Centers for Medicare and Medicaid Services (CMS).