C7A.1 is a billable/specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Malignant poorly differentiated neuroendocrine tumors.
Inclusion term
Malignant poorly differentiated neuroendocrine tumor NOS
Malignant poorly differentiated neuroendocrine carcinoma, any site
High grade neuroendocrine carcinoma, any site
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