Z90.10 — Acquired absence of unspecified breast and nipple
Is Z90.10 billable?
Yes, but Z90.10 is an unspecified code. Z90.10 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, Z90.10 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 Z90.10 — the more specific alternatives are listed below.
Z90.10 at a glance
| Code | Z90.10 |
|---|---|
| Description | Acquired absence of unspecified breast and nipple |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does Z90.10 group to?
Z90.10 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 Z90.10 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under Z90.1, the nearest indexed parent of Z90.10. Use them to find the family, then select the specific code.
- Absence › breast (of) (organ or part) (complete or partial)
- Absence › nipple (of) (organ or part) (complete or partial)
- Status › mastectomy (post)
Excludes1 — never code together — inherited from Z90
The conditions below can never be reported together with Z90.10 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- congenital absence - see Alphabetical Index
Excludes2 — not included here — inherited from Z90
The conditions below are not part of Z90.10, but a patient may have both at the same time. When documentation supports it, Z90.10 and the excluded code may both be reported.
- postprocedural absence of endocrine glands (E89.-)
Code also — inherited from Z77-Z99
Two codes may be needed to describe the condition fully. Whether Z90.10 is sequenced first depends on the reason for the encounter.
- any follow-up examination (Z08-Z09)
How long has Z90.10 existed?
Z90.10 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.