Grade Clinical
This input is used for staging
Notes
**Note 1:** Clinical grade must not be blank. **Note 2:** Assign the highest grade from the primary tumor assessed during the clinical time frame. **Note 3:** Codes 1-3 take priority over A-D. **Note 4:** Code 9 when * Grade from primary site is not documented * Clinical workup is not done (for example, cancer is an incidental finding during surgery for another condition) * Grade checked “not applicable” on CAP Protocol (if available) and no other grade information is available **Note 5:** If there is only one grade available and it cannot be determined if it is clinical, pathological, or after neo-adjuvant therapy, assign as a clinical grade and code unknown (9) for pathological grade, and blank for post-therapy grade. **Note 6:** If you are assigning an AJCC 8th edition stage group * Grade is required to assign stage group * Codes A-D are treated as an unknown grade when assigning AJCC stage group * An unknown grade may result in an unknown stage groupDefault
9NAACCR Item
NAACCR #3843Metadata
SSDI| Code | Description |
|---|---|
| 1 | G1: Sum of differentiation score, mitotic count score and necrosis score equals 2 or 3 |
| 2 | G2: Sum of differentiation score, mitotic count score and necrosis score of 4 or 5 |
| 3 | G3: Sum of differentiation score, mitotic count score and necrosis score of 6, 7, or 8 |
| A | Well differentiated |
| B | Moderately differentiated |
| C | Poorly differentiated |
| D | Undifferentiated, anaplastic |
| 9 | Grade cannot be assessed (GX); Unknown |