ICD Code C7A.1

ICD code C7A.1 is malignant poorly differentiated neuroendocrine tumors.

1. Presence of a malignant tumor confirmed to be of neuroendocrine origin

2. Histopathological evidence of poor cellular differentiation

3. Tumor cells exhibiting neuroendocrine markers on immunohistochemistry (e.g., chromogranin, synaptophysin, CD56)

4. Evidence of aggressive clinical behavior, such as rapid growth or early metastasis

5. Absence of well-differentiated neuroendocrine tumor features

6. Symptoms may include flushing, diarrhea, unexplained weight loss, abdominal pain, or symptoms related to hormone secretion

7. Imaging or biopsy confirming the diagnosis and grade of the tumor

Relevant CPT codes that may be used to treat ICD code C7A.1 include:

- 19120 (Excision of cyst, fibroadenoma, or other benign or malignant tumor, breast)

- 32480 (Removal of lung, other than pneumonectomy; single lobe)

- 44140 (Colectomy, partial; with anastomosis)

- 47562 (Laparoscopy, surgical; cholecystectomy)

- 48150 (Pancreatectomy, distal subtotal with or without splenectomy)

- 49203–49205 (Excision or destruction, open, intra-abdominal tumors)

- 49505 (Repair initial inguinal hernia, age 5 years or older; reducible)

- 88305 (Pathology examination, surgical specimen)

- 96413 (Chemotherapy administration, intravenous infusion technique; up to 1 hour, single or initial substance/drug)

- 77427 (Radiation treatment management, 5 treatments)

CPT code selection should be based on the specific procedure or service rendered for the management of C7A.1.

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