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SEER Inquiry System - Report
Produced: 02/09/2026 7:41 AM
Question 20240054
Inquiry Details
References:
#1: 2018 EOD Manual. General Instructions; SEER*RSA Breast
#2: AJCC Cancer Staging Manual, 589-628. 8th edition, Breast chapter
Question:
EOD 2018/Primary Tumor--Breast: We are having difficulty deciding when we can or cannot use physician-assigned TNM staging to code EOD data items if the medical record or hospital abstract documentation is unclear. As a central registry, we are unable to query physicians for clarification. Please advise what is a “discrepancy” in the EOD General Instructions to “Use the medical record documentation to assign EOD when there is a discrepancy between the T, N, M information and the documentation in the medical record.” See Discussion.
Discussion:
We know that physician TNM staging is not always accurate, and we also know that doctors sometimes use information in assigning their TNM which may not be available to registrars. Is it a discrepancy when the documentation in the chart is unclear or not definitive, yet the physician assigns a TNM that seems to incorporate that documentation? Or is a discrepancy an obvious conflict between chart documentation and the doctor’s staging – such as a mis-assignment of TNM category that doesn’t at all match with clear and complete medical record documentation, or the physician’s use of criteria that should be excluded from the TNM assignment per AJCC guidelines?
A real case example is a patient with breast carcinoma, imaging states 12 cm tumor with thickening of dermis, and thickening of morphologically suspicious internal mammary and level 1-2 axillary lymph nodes. Medical oncologist states locally advanced breast cancer with extensive changes involving skin thickening associated with the mass, at least stage IIIC based on imaging and exam findings, cT4 N3b. Only axillary nodes were sampled and found to be positive. Post-neoadjuvant therapy resection showed only focal DCIS. Per EOD guidelines, would the oncologist’s staging be a discrepancy with the chart documentation and therefore ignored, with EOD-Primary Tumor coded 200 for skin thickening, and EOD-Lymph Nodes 200 for involvement of axillary nodes only? Or would the doctor’s TNM be a clarification/confirmation of documentation terms that we otherwise would not code, with EOD-PT coded 400 for extensive skin involvement and EOD-LNs 600 for internal mammary + axillary nodes?
Answer:
Use all information available in the medical record. EOD is a combination of the most precise clinical and pathological documentation of the extent of disease as instructed in the EOD 2018 General Instructions, Extent of Disease section.
EOD 2018 General Instructions, General Coding Instructions section advises to use the medical record documentation to assign EOD when there is a discrepancy between the T, N, M information and the documentation in the medical record. When there is doubt that the documentation in the medical record is complete, code the EOD corresponding to the physician staging. A discrepancy can exist within the medical record when the information in the chart is unclear, incomplete, or conflicting, for example, the TNM staging from pathology differs from the medical oncologist’s TNM staging.
In the scenario provided, use the medical oncologist stage information that takes into account imaging and exam findings. Based on the stage cT4 N3b, assign
EOD Primary Tumor: 400
Extensive skin involvement
WITHOUT a stated diagnosis of inflammatory carcinoma
WITH or WITHOUT dermal lymphatic filtration
EOD Regional Nodes: 600
Internal mammary node(s), ipsilateral, clinically apparent
(On imaging or clinical exam)
WITH axillary (level I, II, or III) lymph node(s), ipsilateral including infraclavicular
