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Produced: 10/07/2025 4:10 PM
Question 20130047
Inquiry Details
References:
Heme & Lymph Manual & DB
Question:
Date of diagnosis--Heme & Lymphoid Neoplasms: What is the diagnosis date for a patient with a mild thrombocytosis diagnosed in 2008, that was subsequently treated with Anagrelide in 11/2010 following an increase in platelet count, and later in 3/2011 was found to have positive JAK2 study physician refers to as essential thrombocythemia? See Discussion.
Discussion:
In 2008, patient diagnosed with mild thrombocytosis. The patient opted to be followed clinically with observation. In November 2010, a CBC showed an increased platelet count to 600,000. Anagrelide was started. The patient would never agree to a bone marrow biopsy. However, in 3/2011 a JAK2 study was performed and read as positive. Following the positive Jak2 study, physician stated the diagnosis was essential thrombocytosis and started the patient on a different drug.
Answer:
Code the diagnosis date to 3/2011. It wasn't until 3/2011 that the physician documented a reportable diagnosis of essential thrombocytosis [9962/3].
Mild thrombocytosis is not reportable. Therefore, the case was not reportable in 2008. Although the patient was treated in 2010, there was no documentation of a reportable diagnosis.
Cancer Site Category:
Heme & Lymphoid Neoplasms
Data Item Category:
Date of diagnosis
Other Category:
N/A
Year:
2013
