CS Site-Specific Factor 2

Clark Level

Notes

**Note 1**: Code the Clark level as documented in the pathology report. **Note 2**: Record only for squamous cell carcinoma of skin of eyelid. For other histologies, use code 987, not applicable.

Default

988

NAACCR Item

NAACCR #2890
Code Description
010 Clark level I
In situ, intraepidermal, intraepithelial, noninvasive
Basement membrane of epidermis is intact
020 Clark level II
Papillary dermis invaded
030 Clark level III
Papillary-reticular dermal interface invaded
040 Clark level IV
Reticular dermis invaded
050 Clark level V
Subcutaneous tissue invaded (through entire dermis)
888 OBSOLETE DATA CONVERTED V0200
See code 988

Not applicable for this site
987 Not applicable, not squamous cell carcinoma of skin of eyelid
988 Not applicable: Information not collected for this case
(May include cases converted from code 888 used in CSv1 for "Not applicable" or when the item was not collected. If this item is required to derive T, N, M, or any stage, use of code 988 may result in an error.)
998 No histologic examination of primary site
999 Unknown or no information
Not documented in patient record