Site-Specific Factor 8

Perineural Invasion

Notes

**Note:** Code the presence or absence of perineural invasion as documented in the pathology report. Assign code 000 if histologic examination of primary site was performed, the pathology report is available for review, and perineural invasion is not mentioned.

Default

999

NAACCR Item

NAACCR #2862

Metadata

None
Code Description
000 None; no perineural invasion present
010 Perineural invasion present
988 Not applicable: Information not collected for this case
998 No histologic examination of primary site
999 Unknown
Not documented in patient record