CS Extension

Notes

**Note 1**: Ciliary body and Iris are both included in the ICD-O-3 site code of C69.4, but they are staged with different criteria by AJCC. The Schema Discriminator is used to select the CS schema appropriate for coding extension for melanoma of the iris. Obsolete codes identified for primaries of the ciliary body are found in this schema because melanomas of ciliary body and iris were included in a single schema in CS Version 1. **Note 2**: Uveal melanomas arise most commonly in the choroid, less frequently in the ciliary body, and least often in the iris. Melanomas of the iris tend to be small, and those arising from or extending to the ciliary body typically are large. **Note 3**: AJCC does not recognize in situ melanoma of the iris. Any case so coded will be mapped to unknown AJCC stage and in situ Summary Stage.
Code Description AJCC 7 T AJCC 6 T Summary Stage 1977 T Summary Stage 2000 T
000 In situ, intraepithelial, noninvasive TX TX IS IS
100 OBSOLETE DATA RETAINED V0200

FOR IRIS PRIMARY ONLY:
Confined to iris, NOS
ERROR: T1NOS L L
110 Limited to iris not more than 3 clock hours in size,
WITHOUT melanomalytic (secondary) glaucoma, or not stated if melanomalytic (secondary) glaucoma

Stated as T1a with no other information on extension
T1a T1a L L
130 Limited to iris more than 3 clock hours in size,
WITHOUT melanomalytic (secondary) glaucoma, or not stated if melanomalytic (secondary) glaucoma

Stated as T1b with no other information on extension
T1b T1b L L
140 Limited to iris
WITH melanomalytic (secondary) glaucoma

Stated as T1c with no other information on extension
T1c T1c L L
160 Limited to iris, NOS

Stated as T1 [NOS] with no other information on extension
T1NOS T1NOS L L
210 OBSOLETE DATA RETAINED V0200
Ciliary body moved to separate schema V0200

FOR CILIARY BODY PRIMARY ONLY:
Tumor 10 mm or less in greatest diameter and 2.5 mm or less in greatest height (thickness), not stated if extraocular extension present
ERROR: T1NOS L L
220 OBSOLETE DATA RETAINED V0200
Ciliary body moved to separate schema V0200

FOR CILIARY BODY PRIMARY ONLY:
Tumor 10 mm or less in greatest diameter and 2.5 mm or less in greatest height (thickness ),
WITHOUT microscopic or macroscopic extraocular extension.
ERROR: T1b L L
230 OBSOLETE DATA RETAINED V0200
Ciliary body moved to separate schema V0200

FOR CILIARY BODY PRIMARY ONLY:
Tumor 10 mm or less in greatest diameter and 2.5 mm or less in greatest height (thickness),
WITH microscopic extraocular extension.
ERROR: T1b L L
240 OBSOLETE DATA RETAINED V0200
Ciliary body moved to separate schema V0200

FOR CILIARY BODY PRIMARY ONLY:
Tumor 10 mm or less in greatest diameter and 2.5 mm or less in greatest height (thickness),
WITH macroscopic extraocular extension.
ERROR: T1c L L
300 Localized, NOS T1NOS T1NOS L L
410 Tumor confluent with or extending into the ciliary body and/or choroid
WITHOUT melanomalytic (secondary) glaucoma, or not stated if melanomalytic (secondary) glaucoma

Stated as T2 [NOS] with no other information on extension
T2NOS T2NOS L L
420 Tumor confluent with or extending into the ciliary body and/or choroid
WITH melanomalytic (secondary) glaucoma

Stated as T2a with no other information on extension
T2a T2a L L
510 OBSOLETE DATA RETAINED V0200
Ciliary body moved to separate schema V0200

FOR CILIARY BODY PRIMARY ONLY:
Tumor greater than 10 mm but not more than 16 mm in greatest basal diameter and between 2.5 mm and 10 mm in maximum height (thickness), not stated if extraocular extension present.
ERROR: T2NOS L L
520 OBSOLETE DATA RETAINED V0200
Ciliary body moved to separate schema V0200

FOR CILIARY BODY PRIMARY ONLY:
Tumor greater than 10 mm but not more than 16 mm in greatest basal diameter and between 2.5 mm and 10 mm in maximum height (thickness),
WITHOUT microscopic or macroscopic extraocular extension present.
ERROR: T2a L L
530 OBSOLETE DATA RETAINED V0200
Ciliary body moved to separate schema V0200

FOR CILIARY BODY PRIMARY ONLY:
Tumor greater than 10 mm but not more than 16 mm in greatest basal diameter and between 2.5 mm and 10 mm in maximum height (thickness),
WITH microscopic extraocular extension present.
ERROR: T2b RE RE
540 OBSOLETE DATA RETAINED V0200
Ciliary body moved to separate schema V0200

FOR CILIARY BODY PRIMARY ONLY:
Tumor greater than 10 mm but not more than 16 mm in greatest basal diameter and between 2.5 mm and 10 mm in maximum height (thickness),
WITH macroscopic extraocular extension present.
ERROR: T2c RE RE
600 Tumor confluent with or extending into the ciliary
body and/or choroid
WITH scleral extension,
WITHOUT melanomalytic (secondary) glaucoma, or not stated if melanomalytic (secondary) glaucoma

Stated as T3 [NOS] with no other information on extension
T3NOS T3NOS L L
610 Tumor confluent with or extending into the ciliarybody and/or choroid
WITH scleral extension
WITH melanomalytic (secondary) glaucoma

Stated as T3a with no other information on extension
T3a T3a L L
650 OBSOLETE DATA RETAINED V0200

FOR IRIS PRIMARY ONLY:
Extraocular extension
ERROR: T4 RE RE
660 Tumor with extrascleral (extraocular) extension less than or equal to 5mm in diameter

Stated as T4a with no other information on extension
T4a T4 RE RE
670 Tumor with extrascleral (extraocular) extension greater than 5mm in diameter

Stated as T4b with no other information on extension
T4b T4 RE RE
680 Extrascleral (extraocular) extension, measurement of diameter not specified T4NOS T4 RE RE
710 OBSOLETE DATA RETAINED V0200
Ciliary body moved to separate schema V0200

FOR CILIARY BODY PRIMARY ONLY:
Tumor more than 16 mm in greatest basal diameter and/or greater than 10 mm in maximum height (thickness),
WITHOUT extraocular extension or not stated if extraocular extension present.
ERROR: T3NOS L L
750 OBSOLETE DATA RETAINED V0200
Ciliary body moved to separate schema V0200

FOR CILIARY BODY PRIMARY ONLY:
Tumor more than 16 mm in greatest basal diameter and/or greater than 10 mm in maximum height (thickness),
WITH extraocular extension.
ERROR: T4 RE RE
800 Further contiguous extension T4b 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