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SEER Inquiry System - Report
Produced: 10/16/2025 2:59 PM
Question 20240003
Inquiry Details
References:
ICD-O-3.2
Question:
Solid Tumor Rules/Histology--Head & Neck: How is histology coded for laryngeal intraepithelial neoplasia II-III (LIN II or LIN III)? See Discussion.
Discussion:
Laryngeal intraepithelial neoplasia II-III is not included in the ICD-O-3.2 and, while the SEER Program Coding and Staging Manual (SPCSM) confirms this is reportable, neither the SPCSM nor the Solid Tumor Rules Manual provide the specific histology to use for LIN II or LIN III. Should this be coded as 8077/2 since this is most like a high grade squamous dysplasia?
Answer:
Assign histology code, 8077/2 (squamous intraepithelial neoplasia, high grade) for LIN III and for LIN II. ICD-O-3.2 lists squamous intraepithelial neoplasia, grade II and grade III as 8077/2 indicating it is reportable. ICD-O-3.2 does not list every site-specific type of intraepithelial neoplasia. Check the SEER manual for reportable and non-reportable examples.
