2026 ICD-10-CM Diagnosis Code Z85.09Personal history of malignant neoplasm of other digestive organs
Z85.09 is a billable ICD-10-CM diagnosis code for personal history of malignant neoplasm of other digestive organs. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 826 through 830, 843 through 845. The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. Coders also document this condition as H/O: biliary disease. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Personal history of malignant neoplasm.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for Z85.09.
Present on Admission (POA)Billing
Z85.09 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- H/O: biliary disease
- H/O: gallbladder disease
- History of cancer of gall bladder
- History of malignant neoplasm of appendix
- History of malignant neoplasm of common bile duct
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- History
- personal (of) - See Also: History, family (of);
- malignant neoplasm (of) - Z85.9
- specified NEC - Z85.09
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- History
- personal (of)
- malignant neoplasm (of)
- digestive organ
- specified NEC
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
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Convert Z85.09 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About Z85.09Overview
Is Z85.09 (Personal history of malignant neoplasm of digestive organs) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report personal history of malignant neoplasm of other digestive organs on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does Z85.09 group to?
On inpatient claims, personal history of malignant neoplasm of other digestive organs maps to MS-DRG 826, 827, 828, 829, 830, 843, 844, 845, with relative weights from 0.8516 to 4.6778 depending on complications. Higher weights mean higher Medicare reimbursement.
Can Z85.09 be a principal diagnosis?
No. The Medicare Code Editor rejects this code as a principal diagnosis because personal history of malignant neoplasm of other digestive organs describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.
Is Z85.09 exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for personal history of malignant neoplasm of other digestive organs on inpatient claims.
What is the ICD-9 equivalent of Z85.09?
Under the General Equivalence Mappings, personal history of malignant neoplasm of other digestive organs converts to ICD-9-CM V10.09 (hx of GI malignancy NEC). The mapping is approximate, so confirm the match fits the documentation.
