EOD Primary Tumor
Notes**Note 1:** In the case of multiple simultaneous tumors, code the tumor with the greatest extension. **Note 2:** Skin ulceration does not alter the classification.
|000||Carcinoma in situ, noninvasive Intraepithelial Bowen disease; intraepidermal||IS|
|100||Lesion(s) confined to dermis Subcutaneous tissue (through entire dermis)||L|
|200||Bone Cartilage Skeletal muscle Underlying cartilage||RE|
|700||Further contiguous extension||D|
|800||No evidence of primary tumor||U|
|999||Unknown; extension not stated Primary tumor cannot be assessed Not documented in medical record Death Certificate Only||U|