CS Site-Specific Factor 4

Perineural Invasion

Notes

**Note**: Code the presence or absence of perineural invasion as documented in the pathology report. Assign code 999 if histologic examination of the primary site is performed and perineural invasion is not mentioned.

Default

999

NAACCR Item

NAACCR #2910

Metadata

CCCR_IVA_COLLECT_IF_AVAILABLE_IN_PATH_REPORT
COC_CLINICALLY_SIGNIFICANT
SEER_CLINICALLY_SIGNIFICANT
Code Description
000 Perineural invasion not present/not identified
010 Perineural Invasion present/identified
888 OBSOLETE DATA CONVERTED V0200
See code 988

Not applicable for this site
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