C25.9 Malignant neoplasm of pancreas, unspecified
The ICD-10-CM code for Malignant neoplasm of pancreas, unspecified is C25.9 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Chapter
- 2: Neoplasms (C00-D49)
- Section
- C15-C26: Malignant neoplasms of digestive organs (C15-C26)
- Category C25
- 9 codes (8 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to C25.9:
- Carcinoma (malignant) › islet cell › with exocrine, mixed › unspecified site
- Adenocarcinoma › islet cell › with exocrine, mixed › unspecified site
U.S. Hospital Utilization
- An estimated 69,870 U.S. inpatient stays in 2023 included C25.9 among the documented diagnoses.
- 14,920 stays listed it as the principal diagnosis.
Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.
Official Coding Guidelines
Ectopic tissue malignancy: code to site of origin (example C25.9)Malignant neoplasm of ectopic tissue Malignant neoplasms of ectopic tissue are to be coded to the site of origin mentioned, e.g., ectopic pancreatic malignant neoplasms involving the stomach are coded to malignant neoplasm of pancreas, unspecified (C25.9).
Tx of primary site (TOC entry)a. Admission/Encounter for treatment of primary site ............................................................. 33
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026