CS Extension

Notes

**Note 1**: When both Federation Internationale de Gynecologie et d'Obstetrique (FIGO) stage and extension detail are available, record the code with extension detail in preference to a statement of FIGO stage. FIGO Stage IIIC is assigned based on tumor extension and/or regional lymph node involvement. Code CS Extension based on a physician's statement of FIGO Stage IIIC only if it is known that the stage value is assigned because of tumor extension. **Note 2**: FIGO no longer includes a Stage 0 (Tis) for this schema. **Note 3**: Liver capsule metastases are coded in CS Extension; liver parenchymal metastases are coded in CS Mets at DX. **Note 4**: Both extension to and discontinuous metastasis to any of the following pelvic organs are considered FIGO Stage II and coded in the range 400-660: adnexa, NOS; bladder, bladder serosa; broad ligament (mesovarium); cul de sac; contralateral fallopian tube; parametrium; pelvic peritoneum; pelvic wall; rectum; sigmoid colon; sigmoid mesentery; ureter; uterus; uterine serosa. **Note 5**: Both extension to and discontinuous metastasis to any of the following abdominal organs are considered FIGO Stage III and coded in the range 685-795: abdominal mesentery; diaphragm; gallbladder; infracolic omentum; kidneys; large intestine except rectum and sigmoid colon; liver (peritoneal surface); omentum; pancreas; pericolic gutter; peritoneum, NOS; small intestine; spleen; stomach; ureters. **Note 6**: From the AJCC Manual 7th Edition (page 430): "It may be preferable to classify a patient as TX (primary tumor cannot be assessed) if inadequate staging biopsies and/or a lack of peritoneal cytology make it inaccurate to classify the patient with confidence as early stage (Stage T3a/IIIA has not been excluded by adequate staging biopsies)." **Note 7**: Since "malignant ascites or malignant peritoneal washings" was not specifically categorized in the 1977 Summary Staging Guide, it is unclear to which stage pre-2001 cases may have been coded.
Code Description AJCC 7 T AJCC 6 T Summary Stage 1977 T Summary Stage 2000 T
000 In situ, intraepithelial, noninvasive
Limited to tubal mucosa
Tis Tis IS IS
100 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 200, 320

Confined to fallopian tube, NOS
FIGO Stage I
T1NOS T1NOS L L
110 Confined to one fallopian tube
WITHOUT penetrating serosal surface
WITHOUT ascites

FIGO Stage IA
T1a T1a L L
120 Confined to both fallopian tubes
WITHOUT penetrating serosal surface
WITHOUT ascites

FIGO Stage IB
T1b T1b L L
130 Extension onto or through tubal serosa
Malignant ascites
Malignant peritoneal washings

FIGO Stage IC
T1c T1c L L
200 Confined to fallopian tube, NOS T1NOS T1NOS L L
300 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 310, 320

Localized, NOS
FIGO Stage I
T1NOS T1NOS L L
310 Localized, NOS T1NOS T1NOS L L
320 FIGO Stage I [NOS] T1NOS T1NOS L L
350 OBSOLETE DATA RETAINED AND REVIEWED V0203
See code 655, 670

Pelvic extension, NOS with no malignant cells in ascites or peritoneal washings
FIGO Stage II
T2NOS T2NOS RE RE
400 Extension or metastasis to:
Corpus uteri
Ovary, ipsilateral
Uterus, NOS
WITHOUT malignant cells in ascites or peritoneal washings
T2a T2a RE RE
450 Extension or metastasis to:
Ovary, contralateral
WITHOUT malignant cells in ascites or peritoneal washings
T2a T2a D RE
460 FIGO Stage IIA T2a T2a RE RE
500 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 510, 620, and 658

Extension or metastasis to (but no malignant cells in ascites or peritoneal washings):
Broad ligament, ipsilateral
Mesosalpinx, ipsilateral
Adjacent peritoneum
FIGO Stage IIB
T2b T2b RE RE
510 Extension or metastasis to:
Broad ligament, ipsilateral
Mesosalpinx, ipsilateral
Adjacent peritoneum
WITHOUT malignant cells in ascites or peritoneal washings
T2b T2b RE RE
600 OBSOLETE DATA RETAINED V0200
See codes 450, 460

Ovary, contralateral (but no malignant cells in ascites or peritoneal washings)
FIGO Stage IIA
ERROR: T2a D RE
610 OBSOLETE DATA RETAINED V0200 (600) + (500) ERROR: T2b D RE
620 51 0 + 450

Extension to any site in 510 plus extension to contralateral ovary
WITHOUT malignant cells in ascites or peritoneal washings
T2b T2b D RE
650 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 652, 658

Extension or metastasis to (but no malignant cells in ascites or peritoneal washings):
Broad ligament, contralateral
Cul de sac (rectouterine pouch)
Mesosalpinx, contralateral
Rectosigmoid
Sigmoid
FIGO IIB
T2b T2b D RE
652 Extension or metastasis to (but no malignant cells in ascites or peritoneal washings):
Broad ligament, contralateral
Cul de sac (rectouterine pouch)
Mesosalpinx, contralateral
Rectosigmoid
Sigmoid
T2b T2b D RE
655 Pelvic extension, NOS with no malignant cells in ascites or peritoneal washings T2NOS T2NOS RE RE
658 FIGO Stage IIB T2b T2b RE RE
660 Pelvic extension (codes 400-655)
WITH malignant cells in ascites or peritoneal washings

FIGO Stage IIC
T2c T2c D D
670 FIGO Stage II [NOS] T2NOS T2NOS RE RE
680 OBSOLETE DATA RETAINED AND REVIEWED V0203
See code 790, 820

Peritoneal implants or metastasis (size of metastases not stated; unknown if microscopic or macroscopic)
Omentum
Small intestine
FIGO Stage III
T3NOS T3NOS D D
685 Microscopic peritoneal implants or metastasis:
Omentum
Small intestine
T3a T3a D RE
688 685 + 660 T3a T3a D D
690 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 685, 698

Microscopic peritoneal implants or metastasis:
Omentum
Small intestine
FIGO Stage IIIA
T3a T3a D D
695 Microscopic peritoneal metastasis outside the pelvis, excluding organs in code 685
(See Note 5)
T3a T3a D D
698 FIGO Stage IIIA T3a T3a D D
700 OBSOLETE DATA CONVERTED V0102
See code 680

Extension or metastasis to:
Omentum
FIGO Stage IIB
ERROR: ERROR: ERROR: ERROR:
710 OBSOLETE DATA CONVERTED V0102
See code 660

Pelvic extension (codes 350-700) with malignant cells in ascites or peritoneal washings
FIGO Stage IIC
ERROR: ERROR: ERROR: ERROR:
720 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 722, 723, and 728

Macroscopic peritoneal implants or metastasis less than or equal to 2cm:
Omentum
Small intestine
FIGO Stage IIIB
T3b T3b D D
722 Macroscopic peritoneal implants or metastasis less than or equal to 2cm:
Omentum
Small intestine
T3b T3b D RE
723 722 + 695 T3b T3b D D
725 Macroscopic peritoneal metastasis less than or equal to 2 cm outside the pelvis, excluding organs in code 722
(See Note 5)
T3b T3b D D
728 FIGO Stage IIIB based on extension T3b T3b D D
730 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 732, 733, and 740

Macroscopic peritoneal implants or metastasis greater than 2cm:
Omentum
Small intestine
FIGO Stage IIIC
T3c T3c D RE
732 Macroscopic peritoneal implants or metastasis greater than 2cm:
Omentum
Small intestine
T3c T3c D RE
733 732 + 725 T3c T3c D D
735 Macroscopic peritoneal implants or metastases greater than 2 cm outside the pelvis, excluding organs in code 732
(See Note 5)
T3c T3c D D
740 FIGO Stage IIIC based on extension T3c T3c D RE
750 OBSOLETE DATA CONVERTED V0203
See code 795

Peritoneal implants outside the pelvis, NOS (size of metastases not stated; unknown if microscopic or macroscopic), except code 680 (See Note 5)
ERROR: ERROR: ERROR: ERROR:
760 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 695 and 698

Microscopic peritoneal metastasis outside the pelvis, except code 690 (See Note 5)
FIGO Stage IIIA
T3a T3a D D
770 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 725 and 728

Macroscopic peritoneal metastasis less
than or equal to 2 cm outside the pelvis, except code 720 (See Note 5)
FIGO Stage IIIB
T3b T3b D D
780 OBSOLETE DATA RETAINED AND REVIEWED V0200
See codes 735 and 740

Peritoneal metastases greater than 2 cm, except code 730 (See Note 5)
FIGO Stage IIIC
T3c T3c D D
790 Peritoneal implants or metastasis outside the pelvis, size of metastasis not stated, unknown if microscopic or macroscopic:
Omentum
Small intestine
T3NOS T3NOS D RE
795 Peritoneal implants or metastases outside the pelvis, size of metastasis not stated, unknown if microscopic or macroscopic, excluding organs in code 790
(See Note 5)
T3NOS T3NOS D D
800 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 810, 820

Further contiguous extension
FIGO Stage III [NOS]
T3NOS T3NOS D D
810 Further contiguous extension T3NOS T3NOS D D
820 FIGO Stage III [NOS] based on extension T3NOS T3NOS D D
950 No evidence of primary tumor T0 T0 U U
999 Unknown; extension not stated
Primary tumor cannot be assessed
(See Note 6)
Not documented in patient record
TX TX U U