| Item # | Length | Source of Standard | Year Implemented | Version Implemented | Year Retired | Version Retired |
|---|---|---|---|---|---|---|
| 450 | 1 | NAACCR |
Code that best describes how the primary site currently is coded. If converted, this field shows the system to which it is converted.
Codes
| 1 | ICD-8 and MOTNAC |
| 2 | ICD-9 |
| 3 | ICD-O, First Edition |
| 4 | ICD-O, Second Edition |
| 5 | ICD-O, Third Edition |
| 6 | ICD-10 |
| 9 | Other |