EOD Primary Tumor
This input is used for staging
Notes
**Note 1:** If there is a discrepancy between the Clark level and the pathological description of extent (invasion into the layers of the dermis), use the higher (more extensive) code. **Note 2:** Code the greatest extent of invasion from any procedure performed on the lesion, whether it is described as a biopsy or an excision. For example, if a punch biopsy with involvement of Clark level IV is followed by a re-excision with residual tumor involving Clark level II, code 300 (Clark level IV). **Note 3:** Satellite lesions/nodules or in-transit metastases are coded in EOD Regional Nodes. **Note 4:** If a Breslow’s depth is given in the pathology report and there is **no other indication of involvement**, the following guidelines may be used (***Note:** If a physician documents a different Clark's Level then provided by these guidelines, go with the physician's Clark Level*) * Code 000: Level I (In situ) * Code 100: Level II (< 0.75 mm Breslow’s Depth) * Code 200: Level III (0.76 mm to 1.50 mm Breslow’s Depth) * Code 300: Level IV (> 1.50 mm Breslow’s Depth) **Note 5:** In addition to EOD Primary Tumor, the following data items are also collected to determine the extent of the primary tumor: - *Breslow's Thickness* [NAACCR Data Item #3817] and - *Ulceration* [NAACCR Data Item #3936]Default
999NAACCR Item
NAACCR #772| Code | Description | SS2018 T |
|---|---|---|
| 000 | In situ, intraepidermal, intraepithelial, noninvasive (Basement membrane of the epidermis is intact) Clark level I | IS |
| 100 | Papillary dermis invaded Clark level II | L |
| 200 | Papillary-reticular dermal interface invaded Clark level III | L |
| 300 | Reticular dermis invaded Clark level IV | L |
| 400 | Skin/dermis, NOS Localized, NOS | L |
| 500 | Subcutaneous tissue (through entire dermis) Clark level V | RE |
| 700 | Bone Skeletal muscle Underlying cartilage Further contiguous extension | D |
| 800 | No evidence of primary tumor Regressed melanoma (complete) | U |
| 999 | Unknown; extension not stated Primary tumor cannot be assessed Not documented in medical record Death Certificate Only | U |