NAACCR Item #3858: High Risk Histologic Features

Item # Length Source of Standard Year Implemented Version Implemented Year Retired Version Retired
3858 1 NAACCR

NAACCR XML: Tumor.highRiskHistologicFeatures

High Risk Histologic Features are defined in AJCC 8 Chapter 15 to include the terms "poor differentiation, desmoplasia, sarcomatoid differentiation, undifferentiated." High risk histologic features are a prognostic factor for cutaneous cell carcinomas of the head and neck.
High Risk Histologic Features is a Registry Data Collection Variable in AJCC. It was previously collected as Skin, CS SSF # 12.
0 No high risk histologic features
1 Desmoplasia
2 Poor differentiation (grade 3)
3 Sarcomatoid differentiation
4 Undifferentiated (grade 4)
5 Multiple high risk histologic features
6 Histologic features, NOS (type of high risk histologic feature not specified)
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
High risk histologic features 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.