CS Extension

Notes

**Note 1**: The substantia propria is the stromal tissue of the conjunctiva underlying the epithelium. The bulbar conjunctiva covers the eyeball, the palpebral conjunctiva lines the eyelids, and the forniceal conjunctiva covers the junction of the eyelid and eyeball. The caruncle is the fleshy prominence at the inner corner of the eye lined by conjunctival epithelium. **Note 2**: Tumors confined to the epithelium are staged as Tis in AJCC 7th Edition. Unless corneal extension is present, they are staged as T1 in AJCC 6th Edition. **Note 3**: Quadrants of involvement are coded in CS Site-Specific Factor 2.
Code Description AJCC 7 T AJCC 6 T Summary Stage 1977 T Summary Stage 2000 T
000 In situ, intraepithelial, noninvasive
Melanoma confined to conjunctival epithelium
Tis T1 IS IS
005 Melanoma confined to conjunctival epithelium with corneal extension Tis Determine Correct Table for AJCC 6 T RE RE
100 OBSOLETE DATA RETAINED V0200
SS1977 and SS2000 derivation changed to In situ

Tumor(s) of bulbar conjunctiva confined to the epithelium occupying one quadrant or less
ERROR: T1 IS IS
120 OBSOLETE DATA RETAINED V0200
SS1977 and SS2000 derivation changed to In situ

Tumor(s) of bulbar conjunctiva confined to the epithelium occupying more than one quadrant
ERROR: T1 IS IS
150 OBSOLETE DATA CONVERTED V0200
See code 330

Tumor(s) of bulbar conjunctiva, NOS
ERROR: ERROR: ERROR: ERROR:
300 Localized, NOS Determine Correct Table for AJCC 7 T Determine Correct Table for AJCC 6 T L L
310 Stated as T1a with no other information on extension Determine Correct Table for AJCC 7 T Determine Correct Table for AJCC 6 T L L
315 Stated as T1b with no other information on extension Determine Correct Table for AJCC 7 T Determine Correct Table for AJCC 6 T L L
320 Stated as T1c with no other information on extension Determine Correct Table for AJCC 7 T Determine Correct Table for AJCC 6 T L L
325 Stated as T1d with no other information on extension Determine Correct Table for AJCC 7 T Determine Correct Table for AJCC 6 T L L
330 Tumor(s) of bulbar conjunctiva NOS

Stated as T1 NOS with no other information on extension
Determine Correct Table for AJCC 7 T Determine Correct Table for AJCC 6 T L L
335 Tumor(s) of bulbar conjunctiva, NOS WITH corneal extension Determine Correct Table for AJCC 7 T Determine Correct Table for AJCC 6 T RE RE
400 OBSOLETE DATA REVIEWED AND CHANGED V0200
Recoded to 330 or 335 depending on corneal involvement

Tumor of bulbar conjunctiva, thickness not stated,
WITH invasion of substantia propria (or with corneal extension, NOS)
ERROR: ERROR: ERROR: ERROR:
410 OBSOLETE DATA REVIEWED AND CHANGED V0200
Recoded to 415 or 425 depending on corneal involvement

Tumor of bulbar conjunctiva, not more than 0.8 mm in thickness,
WITH invasion of substantia propria (or with corneal extension, NOS)
ERROR: ERROR: ERROR: ERROR:
415 OBSOLETE DATA RETAINED V0200
CSv2 code, data recoded from code 410

Tumor of bulbar conjunctiva, not more than 0.8 mm in thickness,
WITHOUT corneal extension
ERROR: Determine Correct Table for AJCC 6 T L L
420 OBSOLETE DATA REVIEWED AND CHANGED V0200
Recoded to 430 or 435 depending on corneal involvement

Tumor of bulbar conjunctiva, more than 0.8 mm in thickness,
WITH invasion of substantia propria (or with corneal extension, NOS)
ERROR: ERROR: ERROR: ERROR:
425 OBSOLETE DATA RETAINED V0200
CSv2 code, data recoded from code 410

Tumor of bulbar conjunctiva, not more than 0.8 mm in thickness,
WITH corneal extension
ERROR: Determine Correct Table for AJCC 6 T RE RE
430 OBSOLETE DATA RETAINED V0200
CSv2 code, data recoded from code 420

Tumor of bulbar conjunctiva, more than 0.8 mm in thickness,
WITHOUT corneal extension
ERROR: Determine Correct Table for AJCC 6 T L L
435 OBSOLETE DATA RETAINED V0200
CSv2 code, data recoded from code 420

Tumor of bulbar conjunctiva, more than 0.8 mm in thickness,
WITH corneal extension
ERROR: Determine Correct Table for AJCC 6 T RE RE
440 OBSOLETE DATA RETAINED V0200
CSv1 code, data recoded from code 460

Tumor involves:
Caruncle
Conjunctival fornix
Palpebral conjunctiva
ERROR: T3 L L
445 Tumor involves:
Conjunctival fornix
Palpebral conjunctiva
Determine Correct Table for AJCC 7 T T3 L L
450 Tumor involves:
Caruncle
Determine Correct Table for AJCC 7 T T3 L L
460 OBSOLETE DATA REVIEWED AND CHANGED V0200
Tumors with involvement of sites in code 440 recoded to 440 or 465 depending on corneal involvement

440 + any of (400 to 420)
ERROR: ERROR: ERROR: ERROR:
465 OBSOLETE DATA RETAINED V0200
CSv2 code, data recoded from code 460

440 + Extension to cornea
ERROR: T3 RE RE
470 445 + Extension to cornea

Involvement of conjunctival fornix or palpebral conjunctiva
WITH extension to cornea
Determine Correct Table for AJCC 7 T T3 RE RE
475 450 + Extension to cornea

Involvement of caruncle
WITH extension to cornea
Determine Correct Table for AJCC 7 T T3 RE RE
480 Stated as T2a with no other information on extension Determine Correct Table for AJCC 7 T T3 L L
485 Stated as T2b with no other information on extension Determine Correct Table for AJCC 7 T T3 L L
490 Stated as T2c with no other information on extension Determine Correct Table for AJCC 7 T T3 L L
495 Stated as T2d with no other information on extension Determine Correct Table for AJCC 7 T T3 L L
500 Tumor of non-bulbar conjunctiva, NOS

Stated as T2 [NOS] with no other information on extension
Determine Correct Table for AJCC 7 T T3 L L
700 OBSOLETE DATA RETAINED V0200
Sites separated for staging in V0200

Extension to:
Eyelid
Globe
Orbit
ERROR: T4 RE RE
710 Extension to Globe

Stated as T3a with no other information on extension
Eval Extension T3 AJCC7 T4 RE RE
720 Extension to:
Eyelid
Nasolacrimal system

Stated as T3b with no other information on extension
Eval Extension T3 AJCC7 T4 RE RE
730 Extension to Orbit

Stated as T3c with no other information on extension
Eval Extension T3 AJCC7 T4 RE RE
740 Extension to Sinus

Stated as T3d with no other information on extension
Eval Extension T3 AJCC7 T4 D D
750 Conjunctival melanoma with local invasion NOS

Stated as T3 NOS with no other information on extension
T3 T4 RE RE
800 OBSOLETE DATA RETAINED V0200
Extension to sinus moved to code 740 in V0200

Further contiguous extension, including:
Central nervous system
ERROR: T4 D D
810 Tumor invades central nervous system
Further contiguous extension

Stated as T4 NOS with no other information on extension
T4 T4 RE RE
950 No evidence of primary tumor T0 T0 U U
999 Unknown; extension note stated
Primary tumor cannot be assessed
Not documented in patient record
TX TX U U
- For CS Extension codes 300-335, 445-450, and 470-500, the pathologic T category for AJCC 7 staging is assigned based on the value of CS Tumor Size/Ext Eval and thickness recorded in CS Site-Specific Factor 1, as shown in the Pathologic Eval Extension Thickness AJCC 7 Table (eval codes 2, 3, 6, 8). The Pathologic Eval Extension Thickness AJCC 7 Table is also used if the CS Tumor Size/Ext Eval code is blank and CS Site-Specific Factor 1 does not equal 998. The clinical T category is assigned based on the value of CS TS/Ext Eval and quadrants recorded in CS Site-Specific Factor 2, as shown in the Clinical Eval Extension Quadrants AJCC 7 Table (eval codes 0, 1, 5, 9). The Clinical Eval Extension Quadrants AJCC 7 Table is also used if the CS Tumor Size/Ext Eval code is blank and CS Site-Specific Factor 1 equals 998. - For CS Extension codes 710- 740, the T category for AJCC 7 staging is assigned based on the value of CS Tumor Size/Ext Eval as shown in the Eval Extension T3 AJCC 7 Table for this schema. - For CS Extension codes 005, 305-335, 415, and 425-435, the pathologic T category for AJCC 6 staging is assigned based on the value of CS Tumor Size/Ext Eval and thickness recorded in CS Site-Specific Factor 1 as shown in the Pathologic Eval Extension Thickness AJCC 6 Table (eval codes 2, 3, 6, 8). The Pathologic Eval Extension Thickness AJCC 6 Table is also used if the CS Tumor Size/Ext Eval code is blank and CS Site-Specific Factor 1 does not equal 998. The clinical T category for AJCC 6 staging is assigned based on the value of CS Tumor Size/Ext Eval as shown in the Clinical Eval Extension AJCC 6 Table (eval codes 0,1, 5, 9) for this schema. The Clinical Eval Extension AJCC 6 Table is also used if the CS Tumor Size/Ext Eval code is blank and CS Site-Specific Factor 1 equals 998.