2027 ICD-10-CM Diagnosis Code Z99Dependence on enabling machines and devices, not elsewhere classified

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z99

ICD-10-CM Z99
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Z99 is a non-billable ICD-10-CM category code for dependence on enabling machines and devices, not elsewhere classified, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Z99.0, Z99.11, Z99.12, and Z99.2.

Code Identity

ICD-10-CM Code
Z99
Billable Status
No — Non-Billable Category
Code Describes
Dependence on enabling machines and devices, not elsewhere classified
Short Description
Dependence on enabling machines and devices, NEC
Chapter
Z77-Z99
Persons with potential health hazards related to family and personal history and certain conditions influencing health status

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 CodeZ99Dependence on enabling machines and devices, not elsewhere classified

Specific Coding for Dependence on enabling machines and devices, NECOverview

Non-specific codes like Z99 require more characters. Use one of these billable codes instead:

  • Use Z99.0 for Dependence on aspirator

  • Z99.1 for Dependence on respirator

  • Use Z99.11 for Dependence on respirator [ventilator] status

  • Use Z99.12 for Encounter for respirator [ventilator] dependence during power failure

  • Use Z99.2 for Dependence on renal dialysis

  • Use Z99.3 for Dependence on wheelchair

  • Z99.8 for Dependence on other enabling machines and devices

  • Use Z99.81 for Dependence on supplemental oxygen

  • Use Z99.89 for Dependence on other enabling machines and devices

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Z99: its own notes plus those printed at block Z77-Z99 and Chapter 21. A note printed at a category, block or chapter applies to every code under it.

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

From Block Z77-Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status applies to 567 codes
  • any follow-up examination (Z08-Z09)

Notes

General instructions on how these codes are used.

From Chapter 21 (Z00-Z99) Factors influencing health status and contact with health services applies to 1,425 codes
  • Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
  • (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
  • (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Z99, its category, or a range that includes it.

Excludes2 1

These codes carry an Excludes2 note naming Z99: its condition is not part of those codes, and both may be reported when the patient has both.

  • Z74 Problems related to care provider dependency
    dependence on enabling machines or devices NEC (Z99.-)

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Z99Overview

What is the ICD-10 code for dependence on enabling machines and devices, not elsewhere classified?

Z99 is the ICD-10-CM category for dependence on enabling machines and devices, not elsewhere classified, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is Z99 a billable code?

No. This is a category header that groups the codes for dependence on enabling machines and devices, not elsewhere classified, and headers cannot be submitted on claims. Claims for dependence on enabling machines and devices, not elsewhere classified need a more specific code from this category, such as Z99.0, Z99.11, and Z99.12.