### Question
How does THE CHILDREN'S BUREAU define ASC proportion?


### Answer
Under *42 U.S.C. § 1395l*, **ASC proportion** is defined as:

> 25 percent for cost reporting periods beginning in fiscal year 1988, 50 percent for portions of cost reporting periods beginning on or after October 1, 1988, and ending on or before December 31, 1990, and 58 percent for portions of cost reporting periods beginning on or after January 1, 1991

#### Citation:
  - *42 U.S.C. § 1395l*
  - Heading: **CHAPTER 6-THE CHILDREN'S BUREAU > SUBCHAPTER XVIII-HEALTH INSURANCE FOR AGED AND DISABLED > Part B-Supplementary Medical Insurance Benefits for Aged and Disabled**

