Ambiguous Terminology/Histology--Heme & Lymphoid Neoplasms: What is the histology code if the final diagnosis is "non-Hodgkin lymphoma NOS," but after further genetic and immunohistochemistry studies were performed the pathology report diagnosis COMMENT section stated the immunohistochemistry findings were "compatible with follicular lymphoma"? See Discussion
Multiple primaries/Histology--Heme & Lymphoid Neoplasms: How many primaries are accessioned and what histology codes apply if a patient has a 1998 diagnosis of essential thrombocythemia and a recent clinical diagnosis of secondary myelofibrosis? See Discussion.
MP/H Rules/Primary site: Can you clarify how you interpreted the term "synchronous" to appropriately code the primary site to C68.9 [urinary tract] for SINQ 20110119 and did not use that code for SINQ 20100025 when both cases used MP/H Rule M8 to determine the number of primaries? See Discussion.
Primary site--Heme & Lymphoid Neoplasms: What is the primary site of a diffuse large B-cell lymphoma described on a PET and an abdominal CT scan as a large pelvic mass displacing bladder and uterus, inseparable from anus, right pelvic sidewall, cervix and bilateral ovaries and per the clinician as stage IIE? See Discussion.
Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned if a patient is diagnosed with acute monocytic leukemia in 2009 and in 2011 has biopsy confirmed granulocytic sarcoma of the cerebellum? See Discussion.
Histology--Heme & Lymphoid Neoplasms: How is the histology coded if a pelvic mass biopsy is positive for B-cell non-Hodgkin lymphoma and a mediastinal lymph node biopsy is positive for follicular lymphoma, grade 1? See Discussion.
Primary site/Heme & Lymphoid Neoplasms: How is the primary site coded if the patient presents with diffuse B cell lymphoma involving the nasopharynx and right maxillary sinus with bilateral cervical, right supraclavicular and axillary lymph nodes? See Discussion.