Z89.9 — Acquired absence of limb, unspecified
Is Z89.9 billable?
Yes, but Z89.9 is an unspecified code. Z89.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, Z89.9 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting Z89.9 — the more specific alternatives are listed below.
More specific alternatives
- Z89.0Acquired absence of thumb and other finger(s)not billable
- Z89.1Acquired absence of hand and wristnot billable
- Z89.2Acquired absence of upper limb above wristnot billable
- Z89.4Acquired absence of toe(s), foot, and anklenot billable
- Z89.5Acquired absence of leg below kneenot billable
- Z89.6Acquired absence of leg above kneenot billable
Z89.9 at a glance
| Code | Z89.9 |
|---|---|
| Description | Acquired absence of limb, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to Z89.9?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name Z89.9 directly.
CMS will reject this code as the principal diagnosis on an inpatient claim. It describes something other than the condition chiefly responsible for the admission.
Which MS-DRGs does Z89.9 group to?
Z89.9 sits in MDC 23 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 951Other Factors Influencing Health Statusmedical
How is Z89.9 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Z89.9. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Amputee (bilateral) (old)
- Absence › extremity (of) (organ or part) (complete or partial)
- Amputation › stump › healed or old NOS
Excludes1 — never code together — inherited from Z89
The conditions below can never be reported together with Z89.9 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Code also — inherited from Z77-Z99
Two codes may be needed to describe the condition fully. Whether Z89.9 is sequenced first depends on the reason for the encounter.
- any follow-up examination (Z08-Z09)
How long has Z89.9 existed?
Z89.9 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
What other codes are in the Z89 family? (6)
- Z89.0Acquired absence of thumb and other finger(s)not billable
- Z89.1Acquired absence of hand and wristnot billable
- Z89.2Acquired absence of upper limb above wristnot billable
- Z89.4Acquired absence of toe(s), foot, and anklenot billable
- Z89.5Acquired absence of leg below kneenot billable
- Z89.6Acquired absence of leg above kneenot billable