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This answer was provided in the context of CSv1 coding guidelines. The response may not be used after your registry database has been converted to CSv2.For tumors diagnosed 2004 only:

Code the CS Site Specific Factor 4 to 999 [Unknown or no information; Not documented in patient record]. If there is no report of a lab test in the health record, code as 999.

Code this field to 000 [Test not done] when there is a statement in the record that a test was not performed.

Tumors diagnosed 1/1/2005 forward no longer have PAP coded in the Site Specific Factor 4 field.

For cases diagnosed prior to 1/1/2010:Code the Primary Site field to C809 [Unknown primary site]. The primary site of diffuse large B cell lymphoma can be either nodal or extranodal. The case described above is likely extranodal because there is no evidence of lymph node involvement. Because the extranodal site of origin is unknown, code the Primary Site to C809.

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.

If it is not clear where the tumor originated, use the following criteria to distinguish ovarian primaries from peritoneal primaries.

The primary site is probably ovarian, unless:

--Ovaries have been previously removed

--Ovaries are not involved (negative)

--Ovaries have no area of involvement greater than 5mm.

Descriptions such as "bulky mass," "omental caking" probably indicate an ovarian primary.

Descriptions such as "seeding," "studding," "salting" probably indicate a peritoneal primary.

For tumors diagnosed prior to 2007:

Familial polyposis is always a single primary. Code the primary site for the case example above to C199 [colon and rectum].

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 1998-2003: For this scenario, assign code 15 if an ultrasound was not performed, performed and negative, or when it is unknown whether or not an ultrasound was performed. Assign code 30 only if an ultrasound was performed and there is no documentation stating that it was negative or positive.

Please refer to the Prostate EOD Coding Guidelines for all of the instructions pertaining to the coding of prostate EOD.

For cases diagnosed prior to 1/1/2010:Abstract the example above as two primaries. Hematologic malignancies (including lymphoma) and solid tumors are handled differently when determining the number of primaries. For hematologic malignancies, take the physician's opinion into account. Use the Single Versus Subsequent Primaries of Lymphatic and Hematopoietic Diseases table as an aid when there is insufficient information available.

For solid tumors, follow the multiple primary rules in the SEER Program Code Manual.

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.

Yes, lymphoma can be accessioned based on a clinical diagnosis.

Code Diagnostic Confirmation in Example 1 as 8 [Clinical diagnosis only].

Code Diagnostic Confirmation in Example 2 as 7 [Radiography and other imaging techniques without microscopic confirmation].