| Item # | Length | Source of Standard | Year Implemented | Version Implemented | Year Retired | Version Retired |
|---|---|---|---|---|---|---|
| 2,200 | 2 | SEER | 1995 | 5 |
Data item required by SEER for tumors of certain sites for the years 1973-87. This item is no longer collected. See Appendix D of the SEER Program Code Manual for details.