NAACCR Item #440: Grade
| Item # | Length | Source of Standard | Year Implemented | Version Implemented | Year Retired | Version Retired |
|---|---|---|---|---|---|---|
| 440 | 1 | SEER/CoC |
NAACCR XML: Tumor.grade
Alternate Names
Grade, Differentiation, or Cell Lineage Indicator (SEER/CCCR)
Grade/Differentiation (CoC)
Description
Code for the grade or degree of differentiation of the reportable tumor. For lymphomas and leukemias, field also is used to indicate T-, B-, Null-, or NK-cell origin.
Note: Code 8 was adopted for use with lymphoma cases diagnosed in 1995 and later.
Codes
See the grade tables on page 67 of ICD-O-3. 16 See also the most recent CoC STOREmanual andSEER Program Code Manual, for site specific coding rules and conversions.
| 1 | Grade I |
| 2 | Grade II |
| 3 | Grade III |
| 4 | Grade IV |
| 5 | T-cell |
| 6 | B-cell |
| 7 | Null cell |
| 8 | NK (natural killer) cell |
| 9 | Grade/differentiation unknown, not stated, or not applicable |
Comment: Use the most recent Hematopoietic and Lymphoid rules for assigning grades 5-8.