Carcinoid syndrome, unspecified

This code represents the systemic manifestation of neuroendocrine tumors that secrete vasoactive substances, leading to a constellation of symptoms such as flushing, diarrhea, bronchospasm, and cardiac involvement. It indicates that the specific type or origin of the carcinoid syndrome is not documented or determined.

Use this code when the patient presents with symptoms consistent with carcinoid syndrome, and the medical record does not specify the primary site of the neuroendocrine tumor or a more definitive diagnosis of the syndrome. Documentation should clearly indicate the presence of carcinoid syndrome without further specificity.

• Do not use this code if a more specific type of carcinoid syndrome (e.g., gastric, bronchial) is documented.
• Always sequence this code after the code for the underlying neuroendocrine tumor, if known and documented.
• Query the provider for more specific documentation if the type or primary site of the carcinoid syndrome is unclear.