Z40.00 — Encounter for prophylactic removal of unspecified organ
Is Z40.00 billable?
Yes, but Z40.00 is an unspecified code. Z40.00 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, Z40.00 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 Z40.00 — the more specific alternatives are listed below.
Z40.00 at a glance
| Code | Z40.00 |
|---|---|
| Description | Encounter for prophylactic removal of unspecified organ |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does Z40.00 group to?
Z40.00 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 Z40.00 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Z40.00. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Prophylactic › organ removal
- Admission › prophylactic › organ removal (for)
Excludes1 — never code together — inherited from Z40
The conditions below can never be reported together with Z40.00 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- organ donations (Z52.-)
- therapeutic organ removal-code to condition
Use additional code — inherited from Z40.0
Report an additional code alongside Z40.00 to fully describe the condition. Z40.00 is sequenced first.
- code to identify risk factor, such as genetic susceptibility to malignant neoplasm Z15.-
Excludes2 — not included here — inherited from Z40-Z53
The conditions below are not part of Z40.00, but a patient may have both at the same time. When documentation supports it, Z40.00 and the excluded code may both be reported.
- follow-up examination for medical surveillance after treatment (Z08-Z09)
How long has Z40.00 existed?
Z40.00 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.