Organization

Field Name

ID

Required

KCR

KIT Gene Immunohistochemistry

34061

yes 

SEER

KIT Gene Immunohistochemistry

3865

yes 

Note 1 Physician statement of KIT IHC can be used to code this data item when no other information is available.

Note 2 KIT Gene Immunohistochemistry (IHC) is the expression of the KIT gene in tumor tissue specimens based on immunohistochemical (IHC) stains. A positive test is a diagnostic and predictive marker for GIST tumors. Do not record secondary or acquired mutations that may have developed because of long-term imatinib treatment.

Note 3 Other names for KIT are CD117 or c-kit.

Note 4 Results from nodal or metastatic tissue may be used for KIT Gene Immunohistochemistry.

Code

Description

0

KIT negative/normal; within normal limits

1

KIT positive

7

Test ordered, results not in chart

8

Not applicable: Information not collected for this case
(If this information is required by your standard setter, use of code 8 may result in an edit error.)

9

Not documented in medical record
Cannot be determined by pathologist
KIT not assessed or unknown if assessed