AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2023 Issue 1; Ask the Editor

Small Cell Lung Cancer with Neuroendocrine Features

The patient was admitted for evaluation of a left lingual lung mass. At discharge, the provider’s final diagnosis listed, “Small cell lung cancer (SCLC) with neuroendocrine features (NEF).” Currently, ICD-10-CM classifies primary malignant neoplasms of the lung to category C34, Malignant neoplasm of bronchus and lung. However, research indicates that SCLC is a neuroendocrine tumor (category C7A). Are malignant neoplasms with neuroendocrine features considered synonymous with neuroendocrine tumors? What is the appropriate diagnosis code for SCLC with neuroendocrine features? ...

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