Grade Clinical (Melanoma Iris)

Grade Clinical (Melanoma Iris)

Data Item Details

Parent Schema: Melanoma Iris
NAACCR Item: #3843
NAACCR XML ID: gradeClinical

Organization Field Mapping

Organization

Field Name

ID#

ID Name

Required

Organization

Field Name

ID#

ID Name

Required

KCR

Grade Clinical

30136

GradeClin

yes

SEER

Grade Clinical

3843

gradeClinical

yes

Valid Values

Notes

Note 1 Grade Clinical must not be blank.

Note 2 Assign the highest grade from the primary tumor assessed during the clinical time frame.

Note 3 If there are multiple tumors with different grades abstracted as one primary, code the highest grade.

Note 4 Codes 1-3 take priority over A-D.

Note 5 For this grading system, the CAP Checklist refers to this as “histologic type,” instead of grade.

Note 6 Code 9 (unknown) 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 7 If there is only one grade available and it cannot be determined if it is clinical or pathological, assume it is a Grade Clinical and code appropriately per Grade Clinical categories for that site, and then code unknown (9) for Grade Pathological, and blank for Grade Post Therapy Clin (yc) and Grade Post Therapy Path (yp).

Code

Description

Code

Description

1

G1: Spindle cell melanoma (>90% spindle cells)

2

G2: Mixed cell melanoma (>10% epithelioid cells and <90% spindle cells)

3

G3: Epithelioid cell melanoma (>90% epithelioid cells)

A

Well differentiated

B

Moderately differentiated

C

Poorly differentiated

D

Undifferentiated, anaplastic

9

Grade cannot be assessed (GX); Unknown


For official definitions and additional context, refer to the NAACCR Data Dictionary.