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ICD-10-CM 2027 diagnosis code

Z40.0Encounter for prophylactic surgery for risk factors related to malignant neoplasms

Not billable — use a more specific code

Z40.0 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.Short description: Encntr for prophylc surg for risks related to malig neoplm

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Z40.0

Z40.0 is the ICD-10-CM diagnosis code for encounter for prophylactic surgery for risk factors related to malignant neoplasms. It belongs to category Z40 (encounter for prophylactic surgery), block Z40-Z53 (Encounters for other specific health care) and chapter 21 (factors influencing health status and contact with health services). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

Within Z40 (encounter for prophylactic surgery), Z40.0 is specifically for encounter for prophylactic surgery for risk factors related to malignant neoplasms. Related codes cover other prophylactic surgery (Z40.8) and unspecified (Z40.9).

To report this condition, pick the subcode that matches the documentation: Z40.00 (organ), Z40.01 (breast), Z40.02 (ovary(s)), Z40.03 (tube(s)) and Z40.09 (organ).

Use an additional code to identify risk factor, such as genetic susceptibility to malignant neoplasm Z15.-.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under Z40.0

Coding notes

Applicable toConditions and synonyms classified to this code
  • Admission for prophylactic organ removal
Use additional codeAdd a secondary code to fully describe the condition
  • code to identify risk factor, such as genetic susceptibility to malignant neoplasm Z15.-

Notes that apply from higher levels

Instructions written at a parent level also apply to Z40.0.

› From Z40 Encounter for prophylactic surgery
Excludes1
  • organ donations (Z52.-)
  • therapeutic organ removal-code to condition

Broader instructions also apply from Z40-Z53 Encounters for other specific health care and Chapter 21: Factors influencing health status and contact with health services.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about Z40.0

Is Z40.0 billable?

No. Z40.0 is a header code. Report one of its more specific subcodes instead.