Can someone provide insight on the differences between the Primary Site under Cancer Identification vs SEER Site Summary?
For example, the breast has nine corresponding ICD-0-3 sites (C500-C509), all of which are listed under Cancer Identification > Primary Site > Breast in KUMC's babel hierarchy. I can select the individual sites or the entire folder to include all sites. Under the SEER Site Summary in KUMC's babel hierarchy, Breast is listed with a recode of 26000, which I assume rolls up the nine site codes based on info from the SEER website ( http://seer.cancer.gov/siterecode/icdo3_d01272003/). I'm having difficulty understanding the differences between the two and is it really necessary to implement the SEER Site Summary in our i2b2. Does it have to do with a point in time in which ICD-0 was implemented and the SEER site summary was how it used to be done? Your insights are much appreciated. Thanks. Justin
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