CS Extension

This input is used for staging

Notes

**Note 1**: When both FIGO stage and extension detail are available, record the code with extension detail in preference to a statement of FIGO stage. **Note 2**: FIGO no longer includes Stage 0 (Tis) for this site. **Note 3**: To assign a T2 category, stromal connective tissue of the cervix must be involved; endocervical glandular involvement only is not considered a T2 tumor in AJCC 7. Use 123, 133, 143, or 145 if endometrial or myometrial involvement is described. **Note 4**: FIGO IIIA and IIIB are extension, whereas FIGO IIIC is nodal involvement. FIGO IVA is extension, whereas FIGO IVB is distant metastasis. FIGO Stage III, NOS and FIGO Stage IV, NOS are assigned based on tumor extension and/or metastasis. Code CS Extension based on a physician's statement of FIGO Stage III, NOS or FIGO Stage IV, NOS only if it is known that the stage value is assigned because of tumor extension. **Note 5**: Positive cytology is reported separately (CS Site Specific Factor 2), and is not included as a staging element for AJCC 7 staging. It is included as a staging element for AJCC 6 and Summary Stage. Since "cancer cells in ascites or in peritoneal washings" was not specifically categorized in the 1977 Summary Staging Guide, it is unclear to which stage previous cases may have been coded in that staging system. **Note 6**: According to the AJCC, extension to the bowel or bladder mucosa must be proven by biopsy in order to rule out bullous edema.

Default

999

NAACCR Item

NAACCR #2810

Code	Description	AJCC 7 T	AJCC 6 T	Summary Stage 1977 T	Summary Stage 2000 T
000	In situ, intraepithelial, noninvasive, preinvasive	Tis	Tis	IS	IS
100	Invasive cancer confined to corpus uteri	T1NOS	Determine Correct Table for AJCC 6 T	Extension Cytology Summary Stage	Extension Cytology Summary Stage
110	Confined to endometrium (stroma)	T1a	Determine Correct Table for AJCC 6 T	Extension Cytology Summary Stage	Extension Cytology Summary Stage
120	Tumor invades less than one-half of myometrium Invasion of inner half of myometrium	T1a	Determine Correct Table for AJCC 6 T	Extension Cytology Summary Stage	Extension Cytology Summary Stage
123	Endocervical glandular involvement WITH tumor limited to endometrium or invading less than one-half of myometrium (See Note 3)	T1a	Determine Correct Table for AJCC 6 T	RE	RE
125	FIGO Stage IA	T1a	Determine Correct Table for AJCC 6 T	Extension Cytology Summary Stage	Extension Cytology Summary Stage
130	Tumor invades one-half or more of myometrium Invasion of outer half of myometrium (See Note 4)	T1b	Determine Correct Table for AJCC 6 T	Extension Cytology Summary Stage	Extension Cytology Summary Stage
133	Endocervical glandular involvement WITH tumor invading one-half or more of myometrium (See Note 3)	T1b	Determine Correct Table for AJCC 6 T	RE	RE
135	FIGO Stage IB	T1b	Determine Correct Table for AJCC 6 T	Extension Cytology Summary Stage	Extension Cytology Summary Stage
140	Invasion of myometrium, NOS	T1NOS	Determine Correct Table for AJCC 6 T	Extension Cytology Summary Stage	Extension Cytology Summary Stage
143	Endocervical glandular involvement WITH tumor invading myometrium, NOS	T1NOS	Determine Correct Table for AJCC 6 T	RE	RE
145	Endocervical glandular involvement and involvement of myometrium not specified	T1NOS	Determine Correct Table for AJCC 6 T	RE	RE
160	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 540 and 545 Tunica serosa of the visceral peritoneum (serosa covering the corpus)	T1NOS	T3a	Extension Cytology Summary Stage	Extension Cytology Summary Stage
180	FIGO Stage I [NOS]	T1NOS	Determine Correct Table for AJCC 6 T	Extension Cytology Summary Stage	Extension Cytology Summary Stage
400	Localized, NOS	T1NOS	Determine Correct Table for AJCC 6 T	Extension Cytology Summary Stage	Extension Cytology Summary Stage
500	Cervix uteri, NOS, but not beyond uterus	T2	Determine Correct Table for AJCC 6 T	RE	RE
510	OBSOLETE DATA RETAINED AND REVIEWED V0203 See code 123, 133, 143, and 145 Endocervical glandular involvement only	T1NOS	Determine Correct Table for AJCC 6 T	RE	RE
520	Cervical stromal invasion	T2	Determine Correct Table for AJCC 6 T	RE	RE
525	FIGO Stage II	T2	Determine Correct Table for AJCC 6 T	RE	RE
540	Extension or metastasis to tunica serosa (visceral peritoneum of corpus, serosa covering the corpus) WITHOUT involvement of cervix	T3a	T3a	Extension Cytology Summary Stage	Extension Cytology Summary Stage
545	Extension or metastasis to tunica serosa of corpus WITH involvement of cervix	T3a	T3a	RE	RE
550	Extension or metastasis to: Adnexa: Fallopian tube(s) Ovary(ies)	T3a	T3a	RE	RE
600	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 550, 655, and 800 Extension or metastasis within true pelvis: Adnexa Fallopian tube(s) Ligaments: Broad, round, uterosacral Ovary(ies) Parametrium Pelvic serosa Tunica serosa (parietal lining of the pelvic or abdominal cavity)	T3a	T3a	RE	RE
610	OBSOLETE DATA RETAINED V0200 See Note 5 and CS Site-Specific Factor 2 Cancer cells in ascites Cancer cells in peritoneal washings FIGO Stage IIIA	ERROR:	T3a	RE	RE
620	OBSOLETE DATA CONVERTED V0200 (See code 645) Ureter and vulva	ERROR:	ERROR:	ERROR:	ERROR:
630	FIGO Stage IIIA	T3a	T3a	RE	RE
635	Extension or metastasis to: Ligaments: Broad Round Parametrium, NOS Visceral peritoneum of pelvic organs excluding serosa of corpus	T3b	T3b	RE	RE
640	Extension or metastasis to vagina	T3b	T3b	D	RE
645	Extension to: Ureter Vulva	T3b	T3b	D	RE
650	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 655 and 662 Extension or metastasis to pelvic wall(s) Described clinically as "frozen pelvis", NOS	T3b	T3b	RE	RE
655	Extension or metastasis to: Pelvic wall(s) Parietal serosa of pelvic wall	T3b	T3b	RE	RE
660	Extension or metastasis to: Bladder wall Bladder, NOS excluding mucosa Rectal wall Rectum, NOS excluding mucosa	T3b	T3b	RE	RE
662	Described clinically as "frozen pelvis", NOS	T3b	T3b	D	RE
663	(660 or 662) + (640 or 645)	T3b	T3b	D	RE
665	FIGO Stage IIIB	T3b	T3b	RE	RE
670	OBSOLETE DATA CONVERTED V0203 See code 663 (662 or 660) + (645 or 640)	ERROR:	ERROR:	ERROR:	ERROR:
680	FIGO Stage III [NOS] based on tumor extension (See Note 4.)	T3NOS	T3NOS	RE	RE
700	OBSOLETE DATA CONVERTED V0200 (See code 710) Extension to bowel mucosa or bladder mucosa (excluding bullous edema) FIGO Stage IVA FIGO Stage IV, NOS	ERROR:	ERROR:	ERROR:	ERROR:
710	OBSOLETE DATA REVIEWED AND CHANGED V0203 See codes 715, 810, and 820 Extension to bowel mucosa or bladder mucosa (excluding bullous edema) Note: On conversion of code 700 to 710, code 710 also included FIGO Stage IVA, FIGO Stage IV, NOS	ERROR:	ERROR:	ERROR:	ERROR:
715	Extension to bowel mucosa or bladder mucosa (excluding bullous edema)	T4	T4	D	D
800	Further contiguous extension Abdominal serosa (visceral or parietal peritoneum of abdomen) Cul de sac (rectouterine pouch or Pouch of Douglas) Sigmoid colon Small intestine	T4	T4	D	D
810	FIGO Stage IVA	T4	T4	D	D
820	FIGO Stage IV [NOS] based on tumor extension (See Note 4.)	T4	T4	D	D
950	No evidence of primary tumor	T0	T0	U	U
999	Unknown; extension not stated Primary tumor cannot be assessed Not documented in patient record	TX	TX	U	U

- For CS Extension codes 100-145, and 180-525 ONLY. If it is a CS Version 1 case, (CS Version Input Original equals 01XXXX and Year of Diagnosis is before 2010), the T category for AJCC 6 stages is assigned based on the value of CS Extension and peritoneal cytology coded in CS Site-Specific Factor 2 as shown in the Extension Cytology AJCC 6 Table CSv1. If it is a CS Version 2 case (CS Version Input Original equals 02XXXX or Year of Diagnosis is greater than 2009), the T category for AJCC 6 staging is based on the value of CS Extension and peritoneal cytology coded in CS Site-Specific Factor 2 as shown in the Extension Cytology AJCC 6 Table CSv2. - For CS Extension codes 100-120, 125-130, 135-140, 160-400, and 540 ONLY. The SS77 and SS2000 stages are assigned based on the value of CS Extension and peritoneal cytology status coded in CS Site-Specific Factor 2 as shown in the Extension Cytology Summary Stage Table.