2025 ICD-10-CM code C7A.0
(Active) Effective Date: N/A Neoplasms - Malignant neuroendocrine tumors 2: Neoplasms Feed
Malignant carcinoid tumor.
The medical necessity for using this code depends on the patient's signs, symptoms, and clinical findings. The documentation must support the diagnosis of a malignant carcinoid tumor to justify the medical necessity of using this code.
Physicians use this code when documenting a diagnosis of malignant carcinoid tumor. The physician's responsibility includes a thorough evaluation of the patient's medical history, physical examination, and relevant diagnostic tests to confirm the diagnosis. Treatment planning and execution, as well as ongoing monitoring and management of the patient's condition, are also part of the clinical responsibility.
In simple words: This code refers to a cancerous tumor called a carcinoid tumor, a type of neuroendocrine tumor. These tumors can occur in various parts of the body but are most common in the digestive system or lungs. Carcinoid tumors release chemicals into the bloodstream, which can cause symptoms such as skin flushing, diarrhea, and difficulty breathing. This code is used when the tumor's specific location is not specified or unknown.
Malignant carcinoid tumor of unspecified site. This code represents a malignant neuroendocrine tumor, previously known as a carcinoid tumor.
Example 1: A patient presents with flushing, diarrhea, and wheezing. After a thorough examination and imaging studies, a malignant carcinoid tumor is found in the small intestine, with metastases to the liver. C7A.0 is used, as the primary site requires further investigation or is not definitively determined., A patient undergoes a routine colonoscopy, during which a small tumor is discovered. Biopsy confirms a malignant carcinoid tumor. Further imaging does not reveal any other primary tumors, and there is no clear origin identified. C7A.0 is used., A patient with a history of lung cancer develops symptoms consistent with carcinoid syndrome.After various diagnostic tests, including imaging and blood tests, the provider determines that the patient has a malignant carcinoid tumor. Without a definitive primary site identified, the provider uses code C7A.0.
Documentation should include the diagnosis, the affected organ or site (if known), any related syndromes, and any other conditions. If applicable, it should include the tumor's size, staging information, and details about associated symptoms or complications.
** Excludes2: malignant pancreatic islet cell tumors (C25.4) and Merkel cell carcinoma (C4A.-). It's important to differentiate a malignant carcinoid tumor from other similar diagnoses.
- Specialties:Oncology, Endocrinology, Gastroenterology, Pulmonology, General Surgery
- Place of Service:Inpatient Hospital, Outpatient Hospital, Physician's Office, and other places of service depending on the location of diagnosis and treatment.