AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2024 Issue 4; New/Revised ICD-10-CM Codes

Carcinoid Heart Syndrome (Disease) (Hedinger Syndrome)

Code E34.0, Carcinoid syndrome, was expanded to create new codes to identify carcinoid syndrome, unspecified (E34.00), carcinoid heart syndrome (E34.01), and other carcinoid syndrome (E34.09). Carcinoid heart disease (CaHD), also known as Hedinger syndrome, is a rare cardiac condition that typically occurs in patients with primary neuroendocrine tumors (PNETs) with metastatic disease to the liver. Studies show that patients with excessive circulating serotonin metabolite are more likely to develop CaHD. Serotonin receptors are found within the cardiac tissues and can lead to disease of the right side of the heart. CaHD can be confirmed...

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