Z85.110
BillablePersonal history of malignant carcinoid tumor of bronchus and lung
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is Z85.110 an HCC code?
No. Z85.110 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
Z85.110 is the ICD-10-CM diagnosis code for personal history of malignant carcinoid tumor of bronchus and lung. A person who previously had a carcinoid tumor (slow-growing neuroendocrine cancer) in the bronchus or lung. Z85.110 sits in the ICD-10-CM chapter for factors influencing health status and contact with health services (z00-z99), within the section covering persons with potential health hazards related to family and personal history and certain conditions influencing health status (z77-z99).
Z85.110 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Carcinoid tumors of the lung are a specific neuroendocrine malignancy; confirm carcinoid type in documentation.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for Z85.110 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Carcinoid tumors of the lung are a specific neuroendocrine malignancy; confirm carcinoid type in documentation
- •Distinguish this code from Z85.118 which is used for other types of lung cancer