Grade Post Therapy

Notes

**Note 1:** Leave post-therapy grade blank when * No neoadjuvant therapy * Clinical or pathological case only * There is only one grade available and it cannot be determined if it is clinical, pathological or post-therapy **Note 2:** Assign the highest grade from the resected primary tumor assessed after the completion of neoadjuvant therapy. **Note 3:** Codes L, H and M take priority over A-D. **Note 4:** Code 9 when * Surgical resection is done after neoadjuvant therapy and grade from the primary site is not documented * Grade checked “not applicable” on CAP Protocol (if available) and no other grade information is available

NAACCR Item

NAACCR #3845

Metadata

SSDI
Code Description
L LG: Low grade (≤20 mitoses per 50 HPF)
H HG: High grade (>20 mitosis per 50 HPF)
M TP53 or CTNNB Mutation
A Well differentiated
B Moderately differentiated
C Poorly differentiated
D Undifferentiated, anaplastic
9 Grade cannot be assessed (GX); Unknown
<BLANK> See Note 1