CS Extension

Notes

**Note 1**: When both the 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. **Note 2**: According to AJCC, metastasis to genital structures for gestational trophoblastic tumors (GTT) is considered T2 and not M1. Metastasis to genital structures is coded in CS Extension and not in CS Mets at DX. **Note 3**: For CS Extension codes 100-850, substaging is determined by the values in CS Site-Specific Factor 1, Prognostic Scoring Index.
Code Description AJCC 7 T AJCC 6 T Summary Stage 1977 T Summary Stage 2000 T
000 OBSOLETE DATA CONVERTED V0203
See code 999

In situ: noninvasive; intraepithelial
ERROR: ERROR: ERROR: ERROR:
100 Confined to placenta T1 T1 L L
300 Localized, NOS T1 T1 L L
320 Confined to uterus : cervix, corpus, and NOS T1 T1 RE RE
330 FIGO Stage IA T1 T1 L L
340 FIGO Stage IB T1 T1 L L
350 FIGO Stage I [NOS] T1 T1 L L
400 Adjacent connective tissue, NOS T2 T2 RE RE
600 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 320, 620

Other genital structures by direct extension or NOS:
Broad ligament
Cervix
Corpus uteri
Fallopian tube(s)
Genital structures, NOS
Ovary(ies)
Uterus, NOS
Vagina
T2 T2 RE RE
620 Other genital structures by direction extension or NOS:
Broad ligament
Fallopian tube(s)
Genital structures, NOS
Ovary(ies)
Vagina
T2 T2 RE RE
700 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 320, 720

Other genital structures, by metastasis:
Broad ligament
Cervix
Corpus uteri
Fallopian tube(s)
Genital structures, NOS
Ovary(ies)
Uterus, NOS
Vagina
T2 T2 D D
720 Other genital structures by metastasis:
Broad ligament
Cervix
Fallopian tube(s)
Genital structures, NOS
Ovary(ies)
Vagina
T2 T2 D D
800 Further contiguous extension T2 T2 D D
810 FIGO Stage IIA T2 T2 RE RE
820 FIGO Stage IIB T2 T2 RE RE
850 FIGO Stage II [NOS] T2 T2 RE RE
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