| 0 |
In situ, intraepithelial, noninvasive
- In situ: noninfiltrating; intraepithelial
- Intraductal WITHOUT infiltration
- Lobular neoplasia, grade 3 (LIN 3)
- Paget disease, in situ |
| 1 |
Localized only (localized, NOS)
- Confined to breast tissue and fat including nipple and/or areola
- Paget disease WITH or WITHOUT underlying tumor |
| 2 |
Regional by direct extension only
- Attachment or fixation to pectoral muscle(s) or underlying tumor
- Chest wall
- Deep fixation
- Extensive skin involvement WITH or WITHOUT dermal lymphatic filtration
+ Edema of skin
+ En cuirasse
+ Erythema
+ Inflammation of skin
+ Lenticular nodule(s)
+ Peau d'orange ("pigskin")
+ Satellite nodules
+ Skin edema
+ Ulceration of skin of breast
- Inflammatory carcinoma, NOS
- Intercostal or serratus anterior muscle(s)
- Ipsilateral rib(s) (contiguous extension only, for discontiguous extension, see code 7)
- Local infiltration of dermal lymphatics adjacent to primary tumor involving skin by direct extension
- Pectoral fascia or muscle(s)
- Subcutaneous tissue
- Skin infiltration of primary breast including skin of nipple and/or areola |
| 3 |
Regional lymph node(s) involved only
- Axillary, NOS (ipsilateral)
+ Level I (low-axilla) (low) (superficial), NOS [adjacent to tail of breast]
* Anterior (pectoral)
* Lateral (brachial)
* Posterior (subscapular)
+ Level II (mid-axilla) (central), NOS
* Interpectoral (Rotter's)
+ Level III (high) (deep), NOS
* Apical (subclavian)
* Axillary vein
- Fixed/matted axillary (level I and II) (ipsilateral)
- Infraclavicular (subclavicular) (ipsilateral)
- Internal mammary (parasternal) (ipsilateral)
- Intramammary (ipsilateral)
- Regional lymph node(s), NOS
+ Lymph node(s), NOS |
| 4 |
Regional by BOTH direct extension AND regional lymph node(s) involved
- Codes (2) + (3) |
| 7 |
Distant site(s)/lymph node(s) involved
- Distant site(s) (including further contiguous extension)
+ Adrenal (suprarenal) gland
+ Bone, including contralateral ribs
+ Contralateral (opposite) breast-if stated as metastatic
+ Ipsilateral rib(s) (discontiguous extension only, see code 2 for contiguous extension)
+ Lung
+ Ovary
+ Satellite nodule(s) in skin other than primary breast
+ Skin over
* Axilla
* Contralateral (opposite) breast
* Sternum
* Upper abdomen
- Distant lymph node(s), NOS
+ Axillary (contralateral or bilateral)
+ Cervical, NOS
+ Fixed/matted axillary (level I and II) (contralateral or bilateral)
+ Infraclavicular (subclavicular) (contralateral or bilateral)
+ Internal mammary (parasternal) (contralateral or bilateral)
+ Intramammary (parasternal) (contralateral or bilateral)
+ Supraclavicular (transverse cervical) (ipsilateral, contralateral or bilateral)
- Distant metastasis, NOS
+ Carcinomatosis
+ Distant metastasis WITH or WITHOUT distant lymph node(s) |
| 9 |
Unknown if extension or metastasis |
