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    Item #
    Length
    Source of Standard
    Year Implemented
    Version Implemented
    Year Retired
    Version Retired
  
  
    3823
    4
    NAACCR
    2018
    18
    
    
  



NAACCR XML: Tumor.circumferentialResectionMargin




Description
Circumferential or Radial Resection Margin, the distance in millimeters between the leading edge of the tumor and the surgically dissected margin as recorded on the pathology report, is a prognostic indicator for colon and rectal cancer.  This may also be referred to as the Radial Resection Margin or surgical clearance.
Rationale
Circumferential or Radial Resection Margin is a Registry Data Collection Variable in AJCC.  It was previously collected as Colon and Rectum CS SSF# 6.
Codes
0.0 Circumferential resection margin (CRM) positive

Margin IS involved with tumor

Described as "less than 1 millimeter (mm)"
0.1-99.9 Distance of tumor from margin: 0.1- 99.9 millimeters (mm)

(Exact size to nearest tenth of millimeter)
XX.0 100 mm or greater
XX.1 Margins clear, distance from tumor not stated

Circumferential or radial resection margin negative, NOS

No residual tumor identified on specimen
XX.2 Margins cannot be assessed 
XX.3 Described as "at least" 1 mm
XX.4 Described as "at least" 2 mm
XX.5 Described as "at least" 3 mm
XX.6 Described as "greater than" 3 mm
XX.7 No resection of primary site
 
Surgical procedure did not remove enough tissue to measure the circumferential or radial resection margin

(Examples include: polypectomy only, endoscopic mucosal resection (EMR), excisional biopsy only, transanal disk excision)
XX.8 Not applicable: Information not collected for this case

(If this information is required by your standard setter, use of code XX.8 may result in an edit error.)
XX.9 Not documented in medical record

Circumferential or radial resection margin not assessed or unknown if assessed
 
Each Site-Specific Data Item (SSDI) applies only to selected primary sites, histologies, and years of diagnosis. Depending on applicability and standard-setter requirements, SSDIs may be left blank.

0.0	Circumferential resection margin (CRM) positive Margin IS involved with tumor Described as "less than 1 millimeter (mm)"
0.1-99.9	Distance of tumor from margin: 0.1- 99.9 millimeters (mm) (Exact size to nearest tenth of millimeter)
XX.0	100 mm or greater
XX.1	Margins clear, distance from tumor not stated Circumferential or radial resection margin negative, NOS No residual tumor identified on specimen
XX.2	Margins cannot be assessed
XX.3	Described as "at least" 1 mm
XX.4	Described as "at least" 2 mm
XX.5	Described as "at least" 3 mm
XX.6	Described as "greater than" 3 mm
XX.7	No resection of primary site Surgical procedure did not remove enough tissue to measure the circumferential or radial resection margin (Examples include: polypectomy only, endoscopic mucosal resection (EMR), excisional biopsy only, transanal disk excision)
XX.8	Not applicable: Information not collected for this case (If this information is required by your standard setter, use of code XX.8 may result in an edit error.)
XX.9	Not documented in medical record Circumferential or radial resection margin not assessed or unknown if assessed