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International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2025-01
Malignant neoplasms with neuroendocrine differentiation that arise in the appendix. Most are well differentiated neuroendocrine tumours (low and intermediate grade), i.e. carcinoids. Poorly differentiated neuroendocrine carcinomas (high grade) are exceedingly rare.
postcoordination
Add Stem and/or Extension codes to form a cluster code which adds detail to the condition.
Histopathology - only one may be selected
Has manifestation - multiple selections are allowed
Has severity - only one may be selected
Has alternative severity2 - only one may be selected
synonyms
Neuroendocrine neoplasms of appendix
Neuroendocrine tumour of appendix
NET- [neuroendocrine tumour] of appendix
carcinoid tumour of appendix
appendiceal carcinoid tumour
Neuroendocrine tumour, G1 of appendix
Neuroendocrine tumour, G2 of appendix
Neuroendocrine carcinoma of appendix
NEC - [neuroendocrine carcinoma] of appendix
Large cell neuroendocrine carcinoma of appendix
Small cell neuroendocrine carcinoma of appendix
Other specified neuroendocrine neoplasms of appendix