Grade Post Therapy


**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:** Code the appropriate grade from a resection done after neoadjuvant therapy. **Note 4:** Codes 1-3 take priority over H. **Note 5:** Code 1 for stated as “low grade” only. **Note 6:** G3 includes undifferentiated and anaplastic. **Note 7:** 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 **Note 8:** If you are assigning an AJCC 8th edition stage group * Grade is required to assign stage group * Code H is treated as a G3 when assigning AJCC stage group * An unknown grade may result in an unknown stage group


NAACCR #3845


Code Description
1 G1: Well differentiated, low grade
2 G2: Moderately differentiated, high grade
3 G3: Poorly differentiated, high grade
H Stated as “high grade” only
9 Grade cannot be assessed (GX); Unknown
<BLANK> See Note 1