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 1-3 take priority over codes A-D.

Note 4: Code 9 when

  • Surgical resection is done after neoadjuvant therapy and grade from the primary site is not documented
  • Surgical resection is done after neoadjuvant therapy and there is no residual cancer
  • Grade checked "not applicable" on CAP Protocol (if available) and no other grade information is available

NAACCR Item

NAACCR #3845

Metadata

SSDI
Code Description
1

G1: Mitotic count (per 10 HPF) less than 2 AND
Ki-67 index (%) less than 3

2

G2: Mitotic count (per 10 HPF) equal 2-20 OR
Ki-67 index (%) equal 3-20

3

G3: Mitotic count (per 10 HPF) greater than 20 OR
Ki-67 index (%) greater than 20

A

Well differentiated

B

Moderately differentiated

C

Poorly differentiated

D

Undifferentiated, anaplastic

9

Grade cannot be assessed (GX); Unknown

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See Note 1