Organization

Field Name

ID

Required

KCR

Perineural Invasion

34102

yes 

SEER

Perineural Invasion

3909

yes 

Note 1 Physician statement of microscopically confirmed perineural invasion can be used to code this data item when no other information is available.

Note 2 Code the presence or absence of perineural invasion by the primary tumor as documented in the pathology report.

Note 3 Information on presence of perineural invasion can be taken from either a biopsy or resection. Absence of perineural invasion can only be taken from a surgical resection pathology report.

Note 4 Code 9 if surgical resection of the primary site is performed and there is no mention of perineural invasion.

Code

Description

0

Perineural invasion not identified/not present

1

Perineural invasion identified/present

8

Not applicable: Information not collected for this case
(If this information is required by your standard setter, use of code 8 may result in an edit error.)

9

Not documented in medical record
Pathology report does not mention perineural invasion
Cannot be determined by the pathologist
Perineural invasion not assessed or unknown if assessed