CS Melanoma Extra Table 2: Extension and Ulceration

Note: For the CS Extension codes 10, 20, 30, 40, 50, 80, and 99 that cross with Site Specific Factor 1 and 2 and Extra Table 1: Thickness and Ulceration.

The CS extra tables are additional tables present in some schemas beyond the standard ones that are used in every schema. They have different purposes and structures, often serving as a means of bringing additional variables into the determination of staging codes.

In coding malignant melanoma for example the CS Extension table in particular codes 10 - 80, and 99 ONLY, the T code is assigned based on value of CS Site Specific Factor 1, Measured Thickness and CS Site Specific Factor 2, Ulceration and Extra Table 1: Thickness and Ulceration and Extra Table 2: Extension and Ulceration (See tables below).

Melanoma CS Extension Table

Note 1: If there is a discrepancy between the Clark level and the pathologic description of extent, use the higher (more extensive) code.

Note 2: Satellite or in-transit metastasis are coded under CS Lymph Nodes.

Code Description TNM SS77 SS2000
00 In situ: Noninvasive; intraepidermal
Clark's level I
Basement membrane of the epidermis is intact
Tis IS IS
10 Papillary dermis invaded
Clark's level II
* L L
20 Papillary-reticular dermal interface invaded
Clark's level III
* L L
30 Reticular dermis invaded
Clark's level IV
* L L
40 Skin/dermis, NOS
Localized, NOS
* L L
50 Subcutaneous tissue invaded (through entire dermis)
Clark's level V
* L RE
80 Further contiguous extension:
Underlying cartilage, bone, skeletal muscle
* D D
95 No evidence of primary tumor T0 U U
99 Unknown extension
Primary tumor cannot be assessed (e.g., shave biopsy or regressed melanoma)
Not documented in patient record
* U U

Extra Table Instructions: For Extension codes 10 - 80, and 99 ONLY, the T code is assigned based on value of CS Site Specific Factor 1, Measured Thickness and CS Site Specific Factor 2, Ulceration and Extra Table 1: Thickness and Ulceration and Extra Table 2: Extension and Ulceration.

Melanoma CS Site-Specific Factor 1 Table

Measured Thickness (Depth), Breslow's Measurement

Note: Code MEASURED THICKNESS (Depth) of tumor (Breslow's measurement), not size. Record actual measurement in millimeters from Pathology Department.

Code Description
000 No mass/tumor found
001 - 988 0.01 - 9.88 millimeters
Code exact measurement in HUNDREDTHS of millimeters.
Examples:
  • 001 0.01 millimeter
  • 002 0.02 millimeters
  • 010 0.1 millimeter
  • 074 0.74 millimeters
  • 100 1 millimeters
  • 105 1.05 millimeters
  • 988 9.88 millimeters
989 9.89 millimeters or larger
990 Microinvasion; microscopic focus or foci only; no size given
999 Unknown; size not stated
Not documented in patient record

CS Site-Specific Factor 2 Ulceration

Note: Melanoma ulceration is the absence of an intact epidermis overlying the primary melanoma based upon histopathological examination.

Code Description
000 No ulceration present
001 Ulceration present
999 Unknown
Not stated
Not documented in patient record

CS Melanoma Extra Table 1: Thickness and Ulceration

Note: For CS Extension codes 10 - 80 and 99 ONLY, the T code is assigned based on cross tabulation of thickness from Site Specific Factor 1 and ulceration from Site Specific Factor 2.

SSF 1 Thickness range from: SSF 1 Thickness range to: SSF 2 Ulceration 000 SSF 2 Ulceration 001 SSF 2 Ulceration 999
000 000 TX TX TX
001 100 * * *
101 200 T2a T2b T2NOS
201 400 T3a T3b T3NOS
401 989 T4a T4b T4NOS
999 999 TX TX TX

Extra Table Notes: For values that cross tabulate to *, the T code is assigned based on the Extra Table 2: Extension and Ulceration.

CS Melanoma Extra Table 2: Extension and Ulceration

Note: For the CS Extension codes 10, 20, 30, 40, 50, 80, and 99 that cross with Site Specific Factor 1 and 2 and Extra Table 1: Thickness and Ulceration.

For CS Extension SSF 2 Ulceration 000 SSF 2 Ulceration 001 SSF 2 Ulceration 999
10 T1a T1b T1NOS
20 T1a T1b T1NOS
30 T1b T1b T1b
40 T1NOS T1b T1NOS
50 T1b T1b T1b
80 T1b T1b T1b
99 T1b T1b T1b
Close Window