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Z89.029 ICD-10-CM Code: Acquired absence of unspecified finger(s)

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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)

Z89.029

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

Acquired absence of unspecified finger(s)

A patient is missing one or more fingers due to amputation, injury, or surgical removal after birth, but the hand (right or left) is not specified.

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
Z89.0Acquired absence of thumb and other finger(s)
Z89.02Acquired absence of other finger(s)
Z89.029Acquired absence of unspecified finger(s)

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for Z89.029 in this effective period.

Excludes 2

Official
  • acquired absence of thumb (Z89.01-)

Related Child Codes

Official
Z89.021Acquired absence of right finger(s)
Z89.022Acquired absence of left finger(s)

Includes

Official

ICD-10-CM does not list Includes notes for Z89.029 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for Z89.029 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for Z89.029 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for Z89.029 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for Z89.029 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance
Use this code only when laterality cannot be determined; clarify which hand is affected when possible
This is less specific than Z89.021 or Z89.022 and should be avoided when documentation allows

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 Z89.029 an HCC code?

No. Z89.029 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.

Code
Z89.029
Description
Acquired absence of unspecified finger(s)
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

Z89.029 is the ICD-10-CM diagnosis code for acquired absence of unspecified finger(s). A patient is missing one or more fingers due to amputation, injury, or surgical removal after birth, but the hand (right or left) is not specified. Z89.029 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).

Z89.029 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.

Use this code only when laterality cannot be determined; clarify which hand is affected when possible.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for Z89.029 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

  • •Use this code only when laterality cannot be determined; clarify which hand is affected when possible
  • •This is less specific than Z89.021 or Z89.022 and should be avoided when documentation allows

Child Codes

Z89.021Acquired absence of right finger(s)
Z89.022Acquired absence of left finger(s)
Z89.029Acquired absence of unspecified finger(s)

Code Hierarchy

└Z89Acquired absence of limb└Z89.0Acquired absence of thumb and other finger(s)└Z89.02Acquired absence of other finger(s)└Z89.029Acquired absence of unspecified finger(s)
└Z89.029Acquired absence of unspecified finger(s)

More on Z89.029

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