ICD-10-CM 2027
ICD-10 code for organ removal prophylactic
From the official ICD-10-CM alphabetic index entry “Prophylactic › organ removal (for neoplasia management)”. Page updated September 29, 2026.
About coding organ removal prophylactic
The ICD-10-CM code for organ removal prophylactic is Z40.00 (Encounter for prophylactic removal of unspecified organ). The official index lists 5 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on Z40.00.
Within Z40.0, choose Z40.00 (unspecified organ) only when documentation doesn't support a more specific option: breast (Z40.01), ovary(s) (Z40.02), fallopian tube(s) (Z40.03) and other organ (Z40.09).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific organ removal prophylactic codes (official index)
- breast Z40.01 — Encounter for prophylactic removal of breast
- fallopian tube (s) Z40.03 — Encounter for prophylactic removal of fallopian tube(s)
- with ovary (s) Z40.02 — Encounter for prophylactic removal of ovary(s)
- ovary (s) Z40.02 — Encounter for prophylactic removal of ovary(s)
- specified site NEC Z40.09 — Encounter for prophylactic removal of other organ
Common questions about organ removal prophylactic ICD-10 codes
What is the ICD-10 code for organ removal prophylactic?
- Z40.00 — Encounter for prophylactic removal of unspecified organ. More specific codes apply when the documentation supports them: Z40.01, Z40.03, Z40.02, Z40.02 and others below.
What is the ICD-10 code for breast organ removal prophylactic?
- Z40.01 — Encounter for prophylactic removal of breast.
What is the ICD-10 code for fallopian tube organ removal prophylactic?
- Z40.03 — Encounter for prophylactic removal of fallopian tube(s).
What is the ICD-10 code for ovary organ removal prophylactic?
- Z40.02 — Encounter for prophylactic removal of ovary(s).
Is Z40.00 billable?
- Yes. Z40.00 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z40.00 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Z40.00 as a principal diagnosis.
Is Z40.00 a CC or MCC?
- No. Z40.00 is neither a CC nor an MCC under MS-DRG v44.0.