Laterality/Multiple Primaries (Pre-2007)--Ovary: Are ovarian primaries with bilateral involvement always coded to laterality 4 (bilateral)? See Description.
Example: "Right ovary with mass replacing majority of ovarian tissue consistent with serous adenoca. Lt ovary with foci of adenoca." No specific statement of primary. Can we assume that the malignancy originated in the right ovary since it is more extensively involved or should laterality be coded 4 because both ovaries have tumor?
For tumors diagnosed prior to 2007:
If one ovary is listed as the primary site, code laterality to that ovary. The example above is one of those times when you would code to the single ovary. The issue of one or both ovaries being involved is handled in staging.
Abstract the example above as a single primary with code 1 [Right] for laterality.
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.
EOD-Pathologic Extension--Prostate/Lymphoma: How is this field coded for a prostatic lymphoma?
For cases diagnosed 1998-2003: Do not code the prostate pathologic extent of disease field for prostatic lymphoma. Leave the path extension for prostate field blank. Code the extent of disease using the lymphoma scheme. Use ONLY the lymphoma scheme - do NOT try to code both lymphoma and prostate extension fields for prostatic lymphoma.
Date of Diagnosis/Histology (Pre-2007)/Behavior--Melanoma: How are these fields coded when the first shave biopsy finds "what appears to be the top of a melanoma" and a subsequent shave biopsy finds "features consistent with lentigo maligna?"
For tumors diagnosed prior to 2007:
Evaluate each case using all available information, including all pathology reports. Use the date of the first biopsy because it did identify the melanoma. The second biopsy confirmed the histologic type.
According to WHO's Histological Typing of Skin Tumors, lentigo maligna melanoma is similar to lentigo maligna, but has dermal invasion by atypical melanocytes.
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.
Behavior Code/EOD-Extension--Bladder: How are these fields coded for a bladder tumor in which the pathologist states, "there is no definite invasion identified" but the urologist states the case as T1? See Description.
Patient presents with four bladder tumors, described as "each measuring close to 2 cm." A specimen was taken of only one of the tumors. The tops of the tumors were fulgurated, then vaporized methodically. No obvious tumor or residual was noted on re-inspection.
Pathology revealed papillary urothelial carcinoma, high grade, with no definite invasion identified. Small segments of muscularis propria were present. A comment read..."it is difficult to determine if lamina propria invasion is present due to marked necrosis and tissue fragmentation." Urologist staged this as AJCC cT2a, but based on the pathology findings changed it to cT1. The urologist insists this is invasive.
For cases diagnosed 1998-2003: Because of the damage to the specimen from cautery and the insistence of the urologist that the tumor was invasive, code extension for this case to 15 based on the physician's TNM category of T1.
A T1 is invasive--code the behavior /3. The urologist is confident it is invasive, and will likely treat the patient accordingly.
EOD-Extension: How is this field coded for synchronous primaries when metastatic disease is found and there is no statement to indicate which primary is the source of the metastases? See Description.
Patient was diagnosed with both esophageal and pancreatic cancer. Liver metastases were also identified. The source of the liver mets is unknown.
For cases diagnosed 1998-2003: Search the record for information about the source of the metastasis. If no such information can be found, code the metastasis to both primaries. Update the abstracts when information becomes available confirming the primary site responsible for the metastasis. Assuming the liver metastases in the example above are distant (i.e. not contiguous) code extension as 85 [Metastasis].
Histology (Pre-2007): Do the terms "keratinizing" or "non-keratinizing" have to be present in the final diagnosis to use codes 8071 through 8073? See discussion.
Should "squamous cell carcinoma, small cell variant" be coded to 8073 even though the final diagnoses does not include the phrase "non-keratinizing?"
For tumors diagnosed prior to 2007:
It is acceptable to assign code 8073/3 for squamous cell carcinoma, small cell, NOS. Code squamous cell carcinoma, large cell, NOS to 8072/3. Code to non-keratinizing unless the pathology report specifies keratinizing.
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.
First Course Therapy: Are radio immune labeled antibodies, such as Bexxar [Tositum--I-131] coded as immunotherapy, radiotherapy, or experimental therapy?
Agents such as Bexxar or Zevalin are radioisotopes and coded as radiation. These agents destroy cancer cells with radiation.
EOD-Extension--Corpus Uteri: How is this field coded for a stage III A endometrial primary with positive pelvic washings, involvement of the omental serosa, and negative lymph nodes?
For cases diagnosed 1998-2003: Code EOD-extension as 85 [Metastasis]. According to our TNM consultant, Omental metastasis is M1, Stage IVB [EOD 85].
EOD-Size of Primary Tumor: Can size be coded from a needle bx that removes all of the invasive tumor and just leaves a "focus of in situ"? See Description.
For example: needle bx diagnosis is "tiny focus of tissue highly suspicious for tubular ca." The lumpectomy path states "single focus of low grade DCIS, no residual ductal ca." Can size be coded 001?
Code tumor size to 001 [Microscopic focus or foci only] for the invasive component. Code the tumor size 990 for cases diagnosed in 2004 and forward. Disregard the microscopic tumor found at further resection.