NAACCR Item #3933: Thrombocytopenia

Item # Length Source of Standard Year Implemented Version Implemented Year Retired Version Retired
3,933 1 NAACCR 2018 18

NAACCR XML: Tumor.thrombocytopenia


Thrombocytopenia is defined by a deficiency of platelets in the blood. In staging of Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma (CLL/SLL), thrombocytopenia is defined as Platelets (Plt) less than 100,000/μL.


Thrombocytopenia is a prognostic factor required for staging of Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma (CLL/SLL) in AJCC 8th edition, Chapter 79 Hodgkin and Non-Hodgkin Lymphomas.


0Thrombocytopenia not present Platelets (Plt) = 100,000/µL Physician states Rai Stage 0-III
1Thrombocytopenia present Platelets (Plt) \< 100,000/µL
5Not applicable: Primary site is not C421
6Lab value unknown, physician states thrombocytopenia is present Physician states Rai Stage IV
7Test ordered, results not in chart
9Not documented in medical record Thrombocytopenia not assessed or unknown if assessed No Rai stage is documented in the record and there is no documentation of thrombocytopenia

Each Site-Specific Data Item (SSDI) applies only to selected primary sites, histologies, and years of diagnosis. Depending on applicability and standard-setter requirements, SSDIs may be left blank.