2026 ICD-10-CM Diagnosis Code Z85.038Personal history of other malignant neoplasm of large intestine

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z85

ICD-10-CM Z85.038
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z85.038 is a billable ICD-10-CM diagnosis code for personal history of other malignant neoplasm of large intestine. 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 history of colorectal neoplasm. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Personal history of malignant neoplasm.

Code Identity

ICD-10-CM Code
Z85.038
Billable Status
Yes — Valid for Submission
Code Describes
Personal history of other malignant neoplasm of large intestine
Short Description
Personal history of malignant neoplasm of large intestine
Parent Code
Z85.03
Personal history of malignant neoplasm of large intestine

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ77-Z99Persons with potential health hazards related to family and personal history and certain conditions influencing health status
CategoryZ85Personal history of malignant neoplasm
This CodeZ85.038Personal history of other malignant neoplasm of large intestine

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z85.038.

Unacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Present on Admission (POA)Billing

Z85.038 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.

  • History of colorectal neoplasm
  • History of malignant neoplasm of cecum and/or colon and/or rectum
  • History of malignant neoplasm of colon

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Conditions classifiable to C18

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • History
      • personal (of)
        • malignant neoplasm (of)
          • colon NEC
    • History
      • personal (of)
        • malignant neoplasm (of)
          • large intestine NEC

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR FAC027
Personal history of malignant neoplasm
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

Colorectal Cancer

Colorectal cancer is cancer that develops in the tissues of the colon or rectum. Your colon and rectum are part of your digestive system:

The full article covers:

  • What is colorectal cancer?
  • What causes colorectal cancer?
  • Who is more likely to develop colorectal cancer?
  • What are the symptoms of colorectal cancer?
  • What is screening for colorectal cancer and who needs it?
  • How is colorectal cancer diagnosed?
  • What are the treatments for colorectal cancer?
  • Can colorectal cancer be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Z85.038 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
V10.05 Hx of colonic malignancy
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z85.038Overview

Is Z85.038 (Personal history of malignant neoplasm of large intestine) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report personal history of other malignant neoplasm of large intestine on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does Z85.038 group to?

On inpatient claims, personal history of other malignant neoplasm of large intestine 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 Z85.038 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because personal history of other malignant neoplasm of large intestine describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z85.038 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 other malignant neoplasm of large intestine on inpatient claims.

What is the ICD-9 equivalent of Z85.038?

Under the General Equivalence Mappings, personal history of other malignant neoplasm of large intestine converts to ICD-9-CM V10.05 (hx of colonic malignancy). The mapping is approximate, so confirm the match fits the documentation.