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.
Both ICD-9-CM and ICD-10-CM codes indicate whether CAD is in the native artery or a bypass graft. ICD-10-CM code category I25.1 denotes CAD of a native artery. Patients can also have CAD of several types of bypass grafts, including: Unspecified (I25.700 â I25.709)