Z89.012 — Acquired absence of left thumb
Is Z89.012 billable?
Yes — Z89.012 is billable for FY2027. Z89.012 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Z89.012 may be submitted for encounters from October 1, 2026 through September 30, 2027.
Z89.012 at a glance
| Code | Z89.012 |
|---|---|
| Description | Acquired absence of left thumb |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to Z89.012?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name Z89.012 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 Z89.012 group to?
Z89.012 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 Z89.012 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under Z89.01, the nearest indexed parent of Z89.012. Use them to find the family, then select the specific code.
- Absence › thumb (of) (organ or part) (complete or partial)
Excludes1 — never code together — inherited from Z89
The conditions below can never be reported together with Z89.012 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 Z89.012 is sequenced first depends on the reason for the encounter.
- any follow-up examination (Z08-Z09)
How long has Z89.012 existed?
Z89.012 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.