2026 ICD-10-CM Diagnosis Code Z99.12Encounter for respirator [ventilator] dependence during power failure

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z99

ICD-10-CM Z99.12
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z99.12 is a billable ICD-10-CM diagnosis code for encounter for respirator [ventilator] dependence during power failure. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified encounters and counseling.

Code Identity

ICD-10-CM Code
Z99.12
Billable Status
Yes — Valid for Submission
Code Describes
Encounter for respirator [ventilator] dependence during power failure
Short Description
Encounter for respirator dependence during power failure
Parent Code
Z99.1
Dependence on respirator

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
CategoryZ99Dependence on enabling machines and devices, not elsewhere classified
This CodeZ99.12Encounter for respirator [ventilator] dependence during power failure

Present on Admission (POA)Billing

Z99.12 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.

Type 1 Excludes

  • mechanical complication of respirator ventilator J95.850

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.

    • Admission(for)
      • respirator [ventilator] use during power failure
    • Encounter(with health service) (for)
      • respirator [ventilator] use during power failure

Clinical ClassificationClinical

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

CCSR FAC012
Other specified encounters and counseling
Default principal diagnosis: inpatient Yes · outpatient Yes

Convert Z99.12 to ICD-9-CMHistory

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

ICD-9-CM
V46.12 Resp depend-powr failure
Exact Match The mapping is direct, with no qualifiers.

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 Z99.12Overview

Is Z99.12 (Dependence on respirator) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report encounter for respirator [ventilator] dependence during power failure on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is Z99.12 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 encounter for respirator [ventilator] dependence during power failure on inpatient claims.

What is the ICD-9 equivalent of Z99.12?

Under the General Equivalence Mappings, encounter for respirator [ventilator] dependence during power failure converts to ICD-9-CM V46.12 (resp depend-powr failure). The mapping is a direct match.