Geisinger Medical Laboratories Test Catalog

IMMUNOHISTOCHEMISTRY (IHC), IN-SITU HYBRIDIZATION (ISH)
Geisinger Epic Procedure Code: LAB4097 Geisinger Epic ID: 11710
SPECIMEN COLLECTION
Specimen type:	Formalin-fixed, paraffin-embedded tissue
Specimen required:	Preferred: a formalin-fixed, paraffin-embedded block Alternative: Minimum of 3 unstained, positively charged (+) slides per assay. For ISH cut tissue sections at 4 microns. Submit clinical history or pathology report as appropriate
SPECIMEN PROCESSING
Transport temperature:	Room temperature.
TEST DETAILS
Additional information:	Submit clinical history or pathology report as appropriate. For breast tissue, documentation of ischemic time and fixation time is appropriate.
CPT code(s):	88342, 88360, or 88365
	Note: The billing party has sole responsibility for CPT coding. Any questions regarding coding should be directed to the payer being billed. The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:	Staining without interpretation (88342), staining with manual quantitation (88360), in-situ hybridization without interpretation (88365)
Methodology:	Immunohistochemistry In-Situ Hybridization
Synonyms:	IHC, IPOX, CISH, ISH
Doctoral Director(s:)	John Childs MD
Review Date:	12/20/2022