ICD-10 Code D01.5 – Carcinoma in situ of liver, gallbladder and bile ducts (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D01.5 – Carcinoma in situ of liver, gallbladder and bile ducts
What it is
D01.5 identifies carcinoma in situ involving the liver, gallbladder, or bile ducts. It means abnormal cells are present in the lining but have not invaded deeper tissue.
Clinical signs
Clinical features vary; refer to documentation. Diagnosis is usually based on pathology showing in situ malignant changes without evidence of invasion, and the site should be clearly documented.
When to use this code
Use D01.5 when the record states carcinoma in situ of the liver, gallbladder, or bile ducts, or an equivalent noninvasive malignant lesion at one of these sites. Code it when pathology or provider documentation confirms the in situ nature and location. Check documentation if the site is unclear.
Do not use for
Do not use this code for invasive primary or metastatic hepatobiliary cancer, or for dysplasia without a carcinoma in situ diagnosis. If the documentation only says “neoplasm” or “lesion,” check documentation.
Coding tip
Verify both the anatomic site and the “in situ” wording before assigning D01.5.