ICD-10-CM 2027 diagnosis code

Z99Dependence on enabling machines and devices, not elsewhere classified

Not billable — use a more specific code

Z99 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.Short description: Dependence on enabling machines and devices, NEC

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Z99

Z99 is the ICD-10-CM diagnosis code for dependence on enabling machines and devices, not elsewhere classified. It belongs to block Z77-Z99 (persons with potential health hazards related to family and personal history and certain conditions influencing health status) and chapter 21 (factors influencing health status and contact with health services). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: Z99.0 (aspirator), Z99.1 (respirator), Z99.2 (dialysis), Z99.3 (wheelchair) and Z99.8 (devices).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under Z99

Notes that apply from higher levels

Instructions written at a parent level also apply to Z99.

Broader instructions also apply from Z77-Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status and Chapter 21: Factors influencing health status and contact with health services.

Codes whose notes reference Z99

Z74Excludes2
Z78Excludes2

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about Z99

Is Z99 billable?: No. Z99 is a header code. Report one of its more specific subcodes instead.