| 0 |
In situ, intraepithelial, noninvasive
- Anal intraepithelial neoplasia III
- Bowen disease |
| 1 |
Localized only (localized, NOS)
- Confined to anus, NOS
- Incidental finding of malignancy in hemorrhoid, NOS
- Intramucosa
- Lamina propria
- Mucosa, NOS
- Muscularis mucosae
- Muscularis propria (internal sphincter)
- Submucosa (superficial invasion) |
| 2 |
Regional by direct extension only
- Ischiorectal fat/tissue
- Perianal skin
- Perineum
- Perirectal skin
- Rectal mucosa or submucosa
- Rectal wall
- Skeletal muscle(s)
+ Anal sphincter (external)
+ Levator ani
- Subcutaneous perianal tissue
- Vulva |
| 3 |
Regional lymph node(s) involved only
- Anorectal
- External iliac
- Inferior hemorrhoidal
- Inguinal (femoral) (deep, superficial)
- Internal iliac (hypogastric)
- Lateral sacral (laterosacral)
- Mesorectal
- Obturator
- Perirectal
- Superior rectal (hemorrhoidal) (femoral)
- 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)
+ Bladder
+ Broad ligament(s)
+ Cervix uteri
+ Corpus uteri
+ Pelvic peritoneum
+ Prostate
+ Urethra
+ Vagina
- Distant lymph node(s), NOS
- Distant metastasis, NOS
+ Carcinomatosis
+ Distant metastases WITH or WITHOUT distant lymph node(s) |
| 9 |
Unknown if extension or metastasis |
