CS Extension

Notes

**Note 1**: In the case of multiple simultaneous tumors, code the tumor with the greatest extension. **Note 2**: Skin ulceration does not alter the AJCC T category. **Note 3**: Satellite nodules/In-transit metastasis are coded in CS Lymph Nodes. **Note 4**: The assignment of the T1, T2, and T3 categories for Merkel cell carcinomas is based on tumor size. A physician's statement of the T category may be used to code both CS Tumor Size and/or CS Extension if this is the only information in the medical record regarding one or both of these fields. However the two fields are coded independently; for example, the record may document size but not extension. Use codes 320, 560, 630, and 810 as appropriate to code CS Extension based on a statement of T when no other extension information is available.

Code	Description	AJCC 7 T	AJCC 6 T	Summary Stage 1977 T	Summary Stage 2000 T
000	In situ, intraepidermal, intraepithelial, noninvasive	Tis	Tis	IS	IS
050	OBSOLETE DATA RETAINED V0200 Non-invasive verrucous carcinoma	ERROR:	Ta	IS	IS
100	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 105, 330 Lesion(s) confined to dermis Invasive tumor limited to subepithelial connective tissue, but not involving corpus spongiosum or cavernosum If primary is skin: invasive tumor limited to skin of penis, prepuce (foreskin) and/or glans Stated as T1 [NOS] with no other information on extension	Extension Size AJCC7	T1	L	L
105	Lesion(s) confined to dermis Invasive tumor limited to skin of penis, prepuce (foreskin), and/or glans Invasive tumor limited to subepithelial connective tissue but not involving corpus spongiosum or corpus cavernosum	Extension Size AJCC7	T1	L	L
300	Localized, NOS	Extension Size AJCC7	T1	L	L
310	Subcutaneous tissue (through entire dermis)	Extension Size AJCC7	T1	L	L
320	OBSOLETE DATA CONVERTED V0203 See code 330 Stated as T1b with no other information on extension	ERROR:	ERROR:	ERROR:	ERROR:
330	Stated as T1 with no other information on extension	Extension Size AJCC7	T1	L	L
350	OBSOLETE DATA CONVERTED V0203 See code 410 For body of penis ONLY: Corpus cavernosum Corpus spongiosum Tunica albuginea of corpus spongiosum	ERROR:	ERROR:	ERROR:	ERROR:
400	OBSOLETE DATA CONVERTED V0203 See code 410 Corpus cavernosum except for tumor in body of penis Corpus spongiosum except for tumor in body of penis Tunica albuginea of corpus spongiosum except for tumor in body of penis	ERROR:	ERROR:	ERROR:	ERROR:
410	Corpus cavernosum Corpus spongiosum Tunica albuginea	Extension Size AJCC7	T2	RE	RE
500	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 105-310, 330, 410, 560-570 and CS Lymph Nodes codes 410-480, 520 Satellite nodule(s) on prepuce or glans	Extension Size AJCC7	T1	RE	RE
560	Stated as T2 with no other information on extension	Extension Size AJCC7	T2	L	L
570	Stated as T3 with no other information on extension	Extension Size AJCC7	T1	RE	RE
600	Prostate Urethra	T4	T3	RE	RE
630	OBSOLETE DATA CONVERTED V0203 See code 570 Stated as T3 with no other information on extension	ERROR:	ERROR:	ERROR:	ERROR:
700	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 710, 720, 730 Underlying cartilage, bone, skeletal muscle Adjacent structures: Muscle, NOS: Bulbospongiosus Ischiocavernosus Superficial transverse perineal Skin: Abdominal Perineum Pubic Scrotal	T4	T4	RE	RE
710	Adjacent structures: Fascia Muscle, NOS: Bulbospongiosus Ischiocavernosus Superficial transverse perineal Skin: Abdomen Perineum Pubic region Scrotum	T4	T4	RE	RE
720	Underlying bone and cartilage	T4	T4	D	D
730	720 + 710	T4	T4	D	D
800	Further contiguous extension: Testis	T4	T4	D	D
810	Stated as T4 with no other information on extension	T4	T4	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

- For CS Extension codes 100-570 ONLY, the T category for AJCC 7 staging is assigned based on the value of CS Tumor Size as shown in the Extension Size AJCC 7 Table for this site.