SEER Inquiry System - Search

For tumors diagnosed prior to 2007:

Code histology to 8310/3 [Clear cell adenocarcinoma, NOS]. This is consistent with the WHO Classification of Tumours and reflects the current practice of placing less emphasis on "cyst-" prefix for ovarian malignancies.

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 tumors diagnosed prior to 2007:

Assign code 8323 [Mixed cell adenocarcinoma] to "mixed papillary serous and clear cell carcinoma." This is histology coding rule 3 in the 2004 SEER manual under single tumor (page 86). There is no other code for this mixture.

Example 1: 8323

Example 2: 8461 (clear cell is not coded according to Rule 6, page 87, because it is not the majority of the tumor).

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 tumors diagnosed prior to 2007:

Assign code 8560 [adenosquamous carcinoma]. According to our pathologist consultant, the mix of adenocarcinoma and squamous carcinoma is adenosquamous carcinoma. Adenosquamous tumors are rare, but known, representing 3-4% of pancreatic carcinomas.

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 tumors diagnosed prior to 2007:

Code the Histology field to 8201/3 [cribriform carcinoma]. The word "type" is a term that indicates majority of the tumor. The term "cribriform" would be a term used to determine the histology code.

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 tumors diagnosed prior to 2007:

If there is no mention of endometrioid carcinoma in the microscopic description, code the Histology field to 8500/3 [duct carcinoma]. If "endometrioid carcinoma" is mentioned in either the final diagnosis or in the microscopic description, code the Histology field to 8380/3 [endometrioid carcinoma].

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 tumors diagnosed prior to 2007:

The ICD-O-3 histology code is 8811/3 [Fibromyxosarcoma] according to the WHO Classification of Tumours of Soft Tissue and Bone. WHO defines myxoinflammatory fibroblastic sarcoma (MIFS) as "a unique low grade sarcoma with myxoid stroma, inflammatory infiltrate and virocyte-like cells that predominantly involves the hands and feet."

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 tumors diagnosed prior to 2007:

For this specific example, code histology to 8481 [Mucin-producing adenocarcinoma] as it is a more specific cell type with inherent prognostic information.

Code 8255/3 [Adenocarcinoma with mixed subtypes] is not appropriate for this case because "intestinal type" is a more specific description of this cancer and not another type of cancer. There are two broad categories of gastrointestinal adenocarcinomas: Intestinal and Diffuse.

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 tumors diagnosed prior to 2007:

Code the Histology field to 9081/3 [Teratocarcinoma, mixed embryonal carcinoma and teratoma], in both ICD-O-2 and ICD-O-3.

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 tumors diagnosed prior to 2007:

Code the Histology field to 8507/3 [micropapillary carcinoma]. According to rule H, the topography code listed in the ICD-O is disregarded if the tumor is known to arise in another site. In this case, the site is thyroid [C73.9] so the topography code of breast [C50._] can be disregarded for this histology. Apply the matrix principle to change the Behavior Code from 2 to 3.

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 tumors diagnosed 2001-2006:

This ovarian tumor is not SEER reportable if diagnosed between 2001-2006. The histology and behavior codes are 8442/1 [serous cystadenoma, borderline malignancy]. Sequence is coded appropriately from 60-88 [non-malignant tumor or central registry-defined neoplasm].

The behavior code could be changed to /3 only when the pathologist states that the disease is malignant. Approximately 20% of serous tumors of low malignant potential have lymph node involvement, according to the WHO Classification of Ovarian Tumours. In ovarian serous tumors of low malignant potential, lymph node involvement is not always equivalent to metastasis and does not signify malignancy in these tumors unless definitely stated as such by the pathologist.

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.