Z89.209 ICD-10-CM Code: Acquired absence of unspecified upper limb, unspecified level
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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)
Z89.209
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceAcquired absence of unspecified upper limb, unspecified level
The person has lost an arm, but the documentation does not specify which side (right or left) or the exact level of amputation.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
MappedHCC 254
Varies by metal level
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
Official- Acquired absence of arm NOS
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for Z89.209 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for Z89.209 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for Z89.209 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for Z89.209 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for Z89.209 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for Z89.209 in this effective period.
Buddy Documentation Tip
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 Z89.209 an HCC code?
No. Z89.209 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- Z89.209
- Description
- Acquired absence of unspecified upper limb, unspecified level
- 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
Z89.209 is the ICD-10-CM diagnosis code for acquired absence of unspecified upper limb, unspecified level. The person has lost an arm, but the documentation does not specify which side (right or left) or the exact level of amputation. Z89.209 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).
Z89.209 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.
This is the least specific code in the upper limb amputation category; use only when neither laterality nor level can be determined.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for Z89.209 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This is the least specific code in the upper limb amputation category; use only when neither laterality nor level can be determined
- •Always attempt to obtain clarification from the provider to code with greater specificity