2026 ICD-10-CM Diagnosis Code Z86.005Personal history of in-situ neoplasm of middle ear and respiratory system

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z86

ICD-10-CM Z86.005
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z86.005 is a billable ICD-10-CM diagnosis code for personal history of in-situ neoplasm of middle ear and respiratory system. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Personal history of other disease.

Code Identity

ICD-10-CM Code
Z86.005
Billable Status
Yes — Valid for Submission
Code Describes
Personal history of in-situ neoplasm of middle ear and respiratory system
Short Description
Pers hx of in-situ neoplasm of middle ear and resp sys
Parent Code
Z86.00
Personal history of in-situ neoplasm

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
CategoryZ86Personal history of certain other diseases
This CodeZ86.005Personal history of in-situ neoplasm of middle ear and respiratory system

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z86.005.

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

Z86.005 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Tabular List NotesGuidance

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

Inclusion Terms

  • Conditions classifiable to D02

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)
        • in situ neoplasm
          • middle ear
    • History
      • personal (of)
        • in situ neoplasm
          • respiratory system
    • History
      • personal (of)
        • neoplasm
          • in situ
            • middle ear
    • History
      • personal (of)
        • neoplasm
          • in situ
            • respiratory system

Clinical ClassificationClinical

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

CCSR FAC030
Personal history of other disease
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

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Read the full article at MedlinePlus

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

Code History & ChangesHistory

Replacement Z86.005 replaces the following previously assigned code(s):

  • Z86.008 - Personal history of in-situ neoplasm of other site
FY 2020AddedAdded to the ICD-10-CM code setEffective October 1, 2019.
FY 2021–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z86.005Overview

Is Z86.005 (Personal history of in-situ neoplasm) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report personal history of in-situ neoplasm of middle ear and respiratory system on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Can Z86.005 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because personal history of in-situ neoplasm of middle ear and respiratory system describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z86.005 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 in-situ neoplasm of middle ear and respiratory system on inpatient claims.