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Surgery of Primary Site codes 30-33 under "skin" are used for various types of biopsies followed by a gross excision of the lesion. The two procedures (biopsy and gross excision) may be performed on different days, at different facilities, by different physicians as long as both procedures are performed during the first course of treatment.

Answer applies to both pre-2002 and 2003+ surgury code definitions.

For cases diagnosed 1998-2003:

Refer to the Prostate EOD Coding Guidelines, Final version distributed to SEER Registries 6/20/2001.

Prostate clinical EOD extension code 15 is used when all three criteria are met as listed on page 3 of the Prostate EOD Coding Guidelines. Meeting 1 or 2 of the 3 criteria is not sufficient for code 15. PE must be done and documented as negative. TRUS may or may not be done, but if done, must be documented as negative. PSA must either be elevated or there is no documentation about the PSA.

Codes 20 and 23-24 would be used with positive physical exam or positive TRUS.

Use codes 30-34 when there is no documentation that the physical exam was negative, or no documentation that the TRUS was negative, or when the prostatic apex is involved.

For tumors diagnosed prior to 2007:

Yes, code using terms from the microscopic description if there is a definitive statement of a more specific histologic type.

Code the case example as 8070/33 [Squamous cell carcinoma, NOS, poorly differentiated]. The microscopic description adds grade information, but does not make a definitive statement of a more specific histologic type. "Keratinized epithelium" is not the same as keratinizing squamous cell carcinoma (8071/3). The mention of "areas of well-differentiated keratinized epithelium" refers to "normal" tissue within the specimen, in contrast to a type of neoplastic tissue.

For tumors diagnosed 2007 or later, refer to the MP/H rules. If there are still questions about how this type of tumor should be coded, submit a new question to SINQ and include the difficulties you are encountering in applying the MP/H rules.

For cases diagnosed prior to 1/1/2010:When several diagnoses are made as part of the diagnostic process within two months, code the one with the worst prognosis.

Code the case example as acute myelocytic leukemia.

For cases diagnosed 2010 forward, refer to the Hematopoietic and Lymphoid Neoplasm Case Reportability and Coding Manual and the Hematopoietic Database (Hematopoietic DB) provided by SEER on its website to research your question. If those resources do not adequately address your issue, submit a new question to SINQ.

For cases diagnosed 1998-2003:

Use the combination of clinical and pathologic information to code EOD for primary site, extension and lymph nodes. Code the more extensive disease. If lymph nodes are positive clinically and not positive after neoadjuvant treatment, code lymph node involvement. If lymph nodes are negative clinically and positive on path, code lymph node involvement. When neoadjuvant treatment is administered because of a clinical statement of stage or involvement, code EOD based on this clinical information, even if later pathologic information would lead to a lesser EOD. General guideline number 6 (page 1 of SEER EOD-88 3rd ed.) points out that clinical information must be considered when coding EOD. However, do not code EOD based on clinical information disproved by pathologic findings in the absence of intervening treatment. The scenario above: The clinical involvement of the nodes justifies the neoadjuvant chemotherapy. Therefore, code EOD based on the clinical lymph node involvement.

For cases diagnosed 1998-2003: Tumor present within the blood vessels of the thyroid capsule is localized (extension code 30). The tumor has not penetrated the capsule itself if it is contained within the blood vessels.

Keep in mind that tumor size determines the extent of disease for thyroid extension codes 10, 20, 30 and 40.