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Revised answer: Assign surgery code 30 for both examples based on the SEER Note on the top of page 2 in the Surgery of Primary Site Codes for Skin: If it is stated to be a wide excision or reexcision, but the margins are unknown, code to 30.

Note: Answer verified Sept. 2019, still valid for current cases.

Code all mets at diagnosis fields to 0 when the Stage is I, II, or III.

When the lymphoma is Stage IV, one of the mets at dx fields (other than Mets at Dx-Distant lymph nodes) needs to be coded to 1. Stage IV indicates that there is multiple extralymphatic organ involvement, diffuse involvement of an organ; liver, brain, lung or bone involvement, or bone marrow involvement.

For bone, brain, liver, and lung, code these as 1 when these sites are involved and they are not the primary site. This is the same instruction for solid tumor neoplasms.

For mets at dx-distant lymph nodes, always code to 0. For lymphomas, lymph node involvement is included in stage and not based on whether they are regional or distant.

For mets at dx-other, code to 1 for bone marrow involvement or if there is multi extralymphatic organ involvement.

Code metronomic chemotherapy as chemotherapy. Metronomic chemotherapy, also referred to as low-dose metronomic (LDM) chemotherapy, is an emerging cancer treatment approach which administers relatively low doses of traditional chemotherapy drugs over a long period of time and without ‘breaks’ in treatment. By using lower doses this method of treatment minimizes the side effects of traditional chemotherapy.

There is a similar question in the FORDS forum of the CoC CAnswer Forum. CoC is the curator for the surgery codes.

Surgical Procedure to Primary Site - Gross excision of the lesion, code in 30s series

Surgical Procedure to Other Site (removal of eye) - code 4

http://cancerbulletin.facs.org/forums/forum/fords-national-cancer-data-base/fords/first-course-of-treatment/surgery/56355-sebaceous-carcinoma-of-the-eyelid-primary-surgery-code

Colloid cyst at the foramen of Monro is not reportable. Colloid cysts are endodermal congenital malformations and do not have an ICD-O-3 code. See the Glossary for Registrars, http://seer.cancer.gov/seertools/glossary/view/542eeea1102c1d14697ef8ab/?q=colloid

Assign 8503/3 for invasive adenocarcinoma arising in a papilloma with high-grade dysplasia, perihilar bile duct primary. Neither ICD-O-3 nor the WHO classification have a code for this specific histology; however, our expert pathologist consultant states 8503/3 is the best available choice based on pages 264 and 273 in the WHO Digestive system classification.

Abstract a single primary and code as 8263/3. Other Sites rule M14 applies. The histology code is 8263/3 based on rules H28 and H12. Apply H28 first, make a second pass through the H rules and apply H12. See slide 18 in the "Beyond the Basics" presentation for applicable instructions on a similar situation, http://seer.cancer.gov/tools/mphrules/training_adv/SEER_MPH_Gen_Instruc_06152007.pdf

This case is an example of the need to update the original abstract based on more complete, subsequent, information.

Code microwave tumor ablation as surgery. For lung, assign code 15.

This question was discussed by the technical advisory group – a small group of representatives from each standard setter which meets periodically. The group agreed on this consensus answer.

The WHO Classification of CNS tumours lists glioblastoma with primitive neuroectodermal tumor component as a subtype of glioblastoma and assigns 9440/3. Also referred to as glioblastoma with a primitive neuronal component.

Apply the Multiple Primaries/Histology, Breast Rule H3: DCIS and a more specific in situ are coded to the more specific histology term which in this case is solid. Code the histology to ductal carcinoma in situ, solid type (8230/2). Based on the information provided, there is no invasive component. The term "microca ++" means micro-calcifications are present, not micro carcinoma.