Radiation Therapy--Breast: Are iodine 125 (I-125) seed implants for breast cancer coded as brachytherapy or as a localization technique similar to wire localization? See Discussion.
Reportability/Histology--Kidney: Is hybrid oncocytic chromophobe tumor reportable for cases diagnosed 2021 and later? If so, how is the histology coded? See Discussion.
Solid Tumor Rules (2018)/Histology--Head & Neck: How is histology coded for a p16-positive squamous cell carcinoma of the base of tongue? Is p16-positive squamous cell carcinoma equivalent to a diagnosis of squamous cell carcinoma human papilloma virus (HPV)-positive (8085)? See Discussion.
MP/H Rules/Histology--Lung: How is the histology coded for a single tumor of the left lower lobe that is stated to be a sarcomatoid carcinoma with features of carcinosarcoma, spindle cell carcinoma, poorly differentiated squamous cell carcinoma and giant cell carcinoma?
Solid Tumor Rules/Histology--Lung: How is histology coded and which H Rule applies for a lung adenocarcinoma when the greatest percentage of the adenocarcinoma is stated to be, "solid; complex glands (cribriform and fused glands) (50%)"? See Discussion.
Histology--Head & Neck: Why is 8070 not listed as a valid histology for ill-defined sites as squamous cell carcinoma arises in the head and neck sites. See Discussion.
Reportability/Histology--Tongue: Is high grade squamous dysplasia of the tongue reportable; and is it the same as carcinoma in situ (CIS), code 8077/2?
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