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Z99.3 ICD-10-CM Code: Dependence on wheelchair

Z99.3 is not a CMS-HCC payment code. MEAT criteria · RAF calculator · HCC coding software

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FY 2026 Apr update / Factors influencing health status and contact with health services (Z00-Z99) / Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)

Z99.3

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Dependence on wheelchair

A patient requires a wheelchair for mobility because they are unable to walk independently due to a physical condition or disability. This code documents their dependence on this assistive device.

CMS-HCC V28

N/A

Not mapped

CMS-HCC V24

N/A

Not mapped

ACA/HHS

N/A

Not mapped

ESRD/PACE

N/A

Not mapped

RXHCC

N/A

Not mapped

Code Book Path

Official
Z99Dependence on enabling machines and devices, not elsewhere classified
Z99.3Dependence on wheelchair

Inclusion Terms

Official
  • Wheelchair confinement status

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for Z99.3 in this effective period.

Related Child Codes

Official
Z99.0Dependence on aspirator
Z99.1Dependence on respirator
Z99.2Dependence on renal dialysis
Z99.8Dependence on other enabling machines and devices

Includes

Official

ICD-10-CM does not list Includes notes for Z99.3 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for Z99.3 in this effective period.

Code First

Official
  • cause of dependence, such as:
  • muscular dystrophy (G71.0-)
  • obesity (E66.-)

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for Z99.3 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for Z99.3 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance
Report this code for patients who are wheelchair-dependent for mobility; it should be used alongside the underlying condition causing the mobility limitation
This is a status code that persists across encounters and should be included in the patient's problem list

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is Z99.3 an HCC code?

No. Z99.3 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.

Code
Z99.3
Description
Dependence on wheelchair
HCC (V28)
No CMS-HCC V28 mapping
RAF
Billable
Yes
Payment year
2026

Coder workflow notes

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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

Z99.3 is the ICD-10-CM diagnosis code for dependence on wheelchair. A patient requires a wheelchair for mobility because they are unable to walk independently due to a physical condition or disability. This code documents their dependence on this assistive device. Z99.3 sits in the ICD-10-CM chapter for factors influencing health status and contact with health services (z00-z99), within the section covering persons with potential health hazards related to family and personal history and certain conditions influencing health status (z77-z99).

Z99.3 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

Report this code for patients who are wheelchair-dependent for mobility; it should be used alongside the underlying condition causing the mobility limitation.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for Z99.3 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

  • Report this code for patients who are wheelchair-dependent for mobility; it should be used alongside the underlying condition causing the mobility limitation
  • This is a status code that persists across encounters and should be included in the patient's problem list

Code First

  • cause of dependence, such as:
  • muscular dystrophy (G71.0-)
  • obesity (E66.-)

Child Codes

Code Hierarchy

More on Z99.3

Related condition guides

Referenced in blog posts

Work Z99.3 in HCC Buddy

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