SEER Inquiry System - View

Question: 20130062 Status
Final

References
Source 1:   Heme & Lymph Manual & DB
pgs:  
Notes:  
Source 2:  
pgs:  
Notes:  


Question
Date of diagnosis--Heme & Lymphoid Neoplasms: Should the diagnosis date be coded to the date of the flow cytometry on the peripheral blood or the date of the bone marrow biopsy for a diagnosis of chronic lymphocytic leukemia/low grade B-cell lymphoma? See Discussion.

Discussion
Is a flow cytometry on peripheral blood alone diagnostic of a hematopoietic malignancy (CLL)? If not, when the diagnosis is verified by a subsequent histologic diagnosis (bone marrow biopsy) would the diagnosis date be the date of the peripheral blood flow cytometry or the date of the bone marrow biopsy? The Class of Case depends on this diagnosis date.

Answer
For cases diagnosed 2010 and forward, access the Hematopoietic Database at http://seer.cancer.gov/seertools/hemelymph.

Code the diagnosis date to the date of the peripheral blood flow cytometry because this is a procedure used to diagnose CLL. Per both the Abstractor Notes and the Definitive Diagnostic Methods sections in the Heme DB, CLL is diagnosed by flow cytometry (immunophenotyping).

SEER*Educate provides training on how to use the Heme Manual and DB. If you are unsure how to arrive at the answer in this SINQ question, refer to SEER*Educate to practice coding hematopoietic and lymphoid neoplasms. Review the step-by-step instructions provided for each case scenario to learn how to use the application and manual to arrive at the answer provided. https://educate.fhcrc.org/LandingPage.aspx.

History


Last Updated
07/02/2014

Date Finalized
07/11/2013