Extension Size Table

Notes

**Note 1**: Tumor size 000 should only be used with CS Extension 950. **Note 2**: Tumor size codes 997-998 are not valid for this site. **Note 3**: For Extension codes 100-800, the T category is assigned based on the value of Tumor Size, as follows:
CS Extension CS Tumor Size AJCC 7 T AJCC 6 T
100, 300, 350, 375, 400, 600, 800 000 ERROR: ERROR:
100, 300, 350, 375, 400, 600, 800 001-050, 990-994, 995 T1b T1b
100, 300, 350, 375, 400, 600, 800 051-989, 996 T2b T2b
100, 300, 400, 600, 800 999 TX TX
350 999 T1b T1b
375 999 T2b T2b
CS Extension CS Tumor Size AJCC 7 T AJCC 6 T
100 000 ERROR: ERROR:
300 000 ERROR: ERROR:
350 000 ERROR: ERROR:
375 000 ERROR: ERROR:
400 000 ERROR: ERROR:
600 000 ERROR: ERROR:
800 000 ERROR: ERROR:
100 001-050 T1b T1b
300 001-050 T1b T1b
350 001-050 T1b T1b
375 001-050 T1b T1b
400 001-050 T1b T1b
600 001-050 T1b T1b
800 001-050 T1b T1b
100 051-989 T2b T2b
300 051-989 T2b T2b
350 051-989 T2b T2b
375 051-989 T2b T2b
400 051-989 T2b T2b
600 051-989 T2b T2b
800 051-989 T2b T2b
100 990-994 T1b T1b
300 990-994 T1b T1b
350 990-994 T1b T1b
375 990-994 T1b T1b
400 990-994 T1b T1b
600 990-994 T1b T1b
800 990-994 T1b T1b
100 995 T1b T1b
300 995 T1b T1b
350 995 T1b T1b
375 995 T1b T1b
400 995 T1b T1b
600 995 T1b T1b
800 995 T1b T1b
100 996 T2b T2b
300 996 T2b T2b
350 996 T2b T2b
375 996 T2b T2b
400 996 T2b T2b
600 996 T2b T2b
800 996 T2b T2b
100 999 TX TX
300 999 TX TX
350 999 T1b T1b
375 999 T2b T2b
400 999 TX TX
600 999 TX TX
800 999 TX TX