Histology Grade Extension AJCC 6 Table
Notes
**Note**: For CS Extension codes 000, 100-550, and 950-999 ONLY, where histology equals 8020, 8021, 8030, 8031, or 8032, or grade equals 4, the T category is assigned based on the value of CS Extension as shown here.CS Extension | T Category |
---|---|
000, 950, 999 | T4NOS |
100, 200, 300, 400 | T4a |
405, 410, 415, 420, 490 | ERROR: |
450, 480, 500, 520, 550 | T4b |
CS Extension | T Category |
---|---|
000 | T4NOS |
100 | T4a |
200 | T4a |
300 | T4a |
400 | T4a |
405 | ERROR: |
410 | ERROR: |
415 | ERROR: |
420 | ERROR: |
450 | T4b |
480 | T4b |
490 | ERROR: |
500 | T4b |
520 | T4b |
550 | T4b |
950 | T4NOS |
999 | T4NOS |