Extension Size Table

Notes

**Note**: For CS Extension codes 100-140, 200, and 300 ONLY, the T category for AJCC 6 and AJCC 7 staging is assigned based on the value of CS Tumor Size, as shown in the this table. A CS Tumor Size code takes precedence over a CS Extension "stated as T" code; however, if CS Tumor Size is coded as unknown, the T category may be assigned based on "stated as T" recorded in CS Extension.
CS Tumor Size CS Extension AJCC 7 T AJCC 6 T
000, 997 100, 110, 120, 130, 140, 200, 300 ERROR: ERROR:
001, 990 100, 110, 120, 130, 140, 200, 300 T1mi T1mi
002-005 100, 110, 120, 130, 140, 200, 300 T1a T1a
006-010, 991 100, 110, 120, 130, 140, 200, 300 T1b T1b
011-020 100, 110, 120, 130, 140, 200, 300 T1c T1c
021-050, 993-995 100, 110, 120, 130, 140, 200, 300 T2 T2
051-989, 998 100, 110, 120, 130, 140, 200, 300 T3 T3
992, 996 100, 110, 120, 130, 140, 200, 300 T1NOS T1NOS
999 100, 200, 300 TX TX
999 110 T1mi T1mi
999 120 T1a T1a
999 130 T1b T1b
999 140 T1c T1c
CS Tumor Size CS Extension AJCC 7 T AJCC 6 T
000 100 ERROR: ERROR:
001 100 T1mi T1mi
002-005 100 T1a T1a
006-010 100 T1b T1b
011-020 100 T1c T1c
021-050 100 T2 T2
051-989 100 T3 T3
990 100 T1mi T1mi
991 100 T1b T1b
992 100 T1NOS T1NOS
993-995 100 T2 T2
996 100 T1NOS T1NOS
997 100 ERROR: ERROR:
998 100 T3 T3
999 100 TX TX
000 110 ERROR: ERROR:
001 110 T1mi T1mi
002-005 110 T1a T1a
006-010 110 T1b T1b
011-020 110 T1c T1c
021-050 110 T2 T2
051-989 110 T3 T3
990 110 T1mi T1mi
991 110 T1b T1b
992 110 T1NOS T1NOS
993-995 110 T2 T2
996 110 T1NOS T1NOS
997 110 ERROR: ERROR:
998 110 T3 T3
999 110 T1mi T1mi
000 120 ERROR: ERROR:
001 120 T1mi T1mi
002-005 120 T1a T1a
006-010 120 T1b T1b
011-020 120 T1c T1c
021-050 120 T2 T2
051-989 120 T3 T3
990 120 T1mi T1mi
991 120 T1b T1b
992 120 T1NOS T1NOS
993-995 120 T2 T2
996 120 T1NOS T1NOS
997 120 ERROR: ERROR:
998 120 T3 T3
999 120 T1a T1a
000 130 ERROR: ERROR:
001 130 T1mi T1mi
002-005 130 T1a T1a
006-010 130 T1b T1b
011-020 130 T1c T1c
021-050 130 T2 T2
051-989 130 T3 T3
990 130 T1mi T1mi
991 130 T1b T1b
992 130 T1NOS T1NOS
993-995 130 T2 T2
996 130 T1NOS T1NOS
997 130 ERROR: ERROR:
998 130 T3 T3
999 130 T1b T1b
000 140 ERROR: ERROR:
001 140 T1mi T1mi
002-005 140 T1a T1a
006-010 140 T1b T1b
011-020 140 T1c T1c
021-050 140 T2 T2
051-989 140 T3 T3
990 140 T1mi T1mi
991 140 T1b T1b
992 140 T1NOS T1NOS
993-995 140 T2 T2
996 140 T1NOS T1NOS
997 140 ERROR: ERROR:
998 140 T3 T3
999 140 T1c T1c
000 200 ERROR: ERROR:
001 200 T1mi T1mi
002-005 200 T1a T1a
006-010 200 T1b T1b
011-020 200 T1c T1c
021-050 200 T2 T2
051-989 200 T3 T3
990 200 T1mi T1mi
991 200 T1b T1b
992 200 T1NOS T1NOS
993-995 200 T2 T2
996 200 T1NOS T1NOS
997 200 ERROR: ERROR:
998 200 T3 T3
999 200 TX TX
000 300 ERROR: ERROR:
001 300 T1mi T1mi
002-005 300 T1a T1a
006-010 300 T1b T1b
011-020 300 T1c T1c
021-050 300 T2 T2
051-989 300 T3 T3
990 300 T1mi T1mi
991 300 T1b T1b
992 300 T1NOS T1NOS
993-995 300 T2 T2
996 300 T1NOS T1NOS
997 300 ERROR: ERROR:
998 300 T3 T3
999 300 TX TX