SEER Inquiry System - Question 20061013 Details

System Guide

Back to Search Results

SEER Inquiry System - Report

Produced: 04/16/2026 3:10 AM

Question 20061013

Export CSV Export PDF Print

Add to Report

Inquiry Details

References:

2007 SEER Manual, C-1072. Appendix C

Question:

CS Extension--Hematopoietic, NOS: Can this field be coded to 10 [Localized disease] for an extramedullary plasmacytoma that is limited to an extramedullary primary, such as appendix, given that this histology is not listed as one of the allowable histology/CS extension combinations for this code? See Discussion.

Discussion:

The Hematopoietic Diseases scheme for CS lists specific histologies for which CS Extension can be coded to 10. Included is plasmacytoma, NOS [9731/3]. However, extramedullary plasmacytoma [9734/3] is not listed as one of the histologies.

Answer:

This answer was provided in the context of CSv1 coding guidelines. The response may not be used after your registry database has been converted to CSv2.Assign code 10 [Localized disease].

Both the 2007 SEER manual (page C-1072) and the CS Version 01.04.00 manual (page II-550) have been updated to include 9734 [extramedullary plasmacytoma] under extension code 10.

Cancer Site Category:

N/A

Data Item Category:

N/A

Other Category:

N/A

Year:

2006