Malignant neoplasm of gallbladder

This code signifies the presence of a primary cancerous tumor originating within the gallbladder. This aggressive malignancy often presents with symptoms such as jaundice, abdominal pain, and weight loss, typically indicating advanced disease.

Apply this code when documentation confirms a primary malignant neoplasm of the gallbladder, often diagnosed through imaging (e.g., ultrasound, CT, MRI) and confirmed by biopsy or surgical pathology. It is appropriate for initial diagnosis, treatment, and follow-up care related to the primary site.

• Always confirm the primary site; if metastatic to the gallbladder, a secondary malignancy code should be used.
• Specify the histological type (e.g., adenocarcinoma) if known, using an additional code if available in ICD-9-CM.
• Sequence this code as the primary diagnosis when it is the reason for the encounter or the most significant condition treated.