| P87 and P89 | = | the average allowed surgical charges in 1987 and 1989, respectively, and |
| Q87 and Q89 | = | the RVU-weighted values of other services provided, on a total episode basis, by the index provider in 1987 and 1989, respectively. |
| P87 and P89 | = | the average allowed surgical charges in 1987 and 1989, respectively, and |
| Q87 and Q89 | = | the RVU-weighted values of other services provided, on a total episode basis, by the index provider in 1987 and 1989, respectively. |