V.5.2 Terms Indicating In Situ

Certain terms indicate an in situ stage. Also see In Situ Coding for Reportable terms indicating “in situ” behavior.

• Behavior code ‘2’

• Bowen's disease (not reportable for C440-C449)

• Clark's level 1 for melanoma (limited to epithelium)

• Confined to epithelium

• DCIS (ductal carcinoma in situ)

• Hutchinson's melanotic freckle, NOS (C44_)

• Intracystic, non-infiltrating (carcinoma, only)

• Intraductal (carcinoma, only)

• Intraepidermal, NOS (carcinoma, only)

• Intraepithelial Neoplasia, NOS (carcinoma, only), Grade III

• AIN III (anal intraepithelial neoplasia)**

• DIN 3 (ductal intraepithelial neoplasia 3)**

• LIN III (laryngeal intraepithelial neoplasia) **

• LIN III (breast lobular intraepithelial neoplasia)*****

• LN III (breast lobular neoplasia)*****

• PanIN-III (pancreatic intraepithelial neoplasia III)***

• PeIN III (penile intraepithelial neoplasia III (C60))**

• SIN III (squamous intraepithelial neoplasia – excluding cervix)****

• VAIN III (vaginal intraepithelial neoplasia (C529))*

• VIN III (vulvar intraepithelial neoplasia (C51_))*

• Intrasquamous

• Involvement up to but not including the basement membrane

• LCIS (lobular carcinoma in situ)

• Lentigo maligna (C44_)

• Lobular, noninfiltrating (C50_)(carcinoma, only)

• No stromal invasion/involvement

• Non-infiltrating (carcinoma, only)

• Non-invasive (carcinoma, only)

• Papillary, noninfiltrating or intraductal (carcinoma, only)

• Precancerous melanosis (C44_)

• Preinvasive

• Queyrat's erythroplasia (C60_)

• Stage 0 (except Paget’s disease (8540/3) of breast and colon or rectal tumors confined to the lamina propria)

* Cases diagnosed 01/1992 and later.

** Cases diagnosed 01/2001 and later.

***Cases diagnosed 01/2004 and later.

****Cases diagnosed 01/01/2014 and later.

*****Cased diagnosed 01/01/2016 and later.

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