Z40
⚠ Non-billable
Encounter for prophylactic surgery
ICD-10-CM · FY2026 · Factors Influencing Health Status
Code
Z40
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Factors Influencing Health Status
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code Z40?
ICD-10-CM code Z40 represents Encounter for prophylactic surgery. It is a non-billable header code requiring a more specific subcategory in the Factors Influencing Health Status chapter, effective October 1, 2025 – September 30, 2026.
Is Z40 billable?
No. Z40 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is Z40 in?
Z40 belongs to the Factors Influencing Health Status chapter (Z00–Z99) of ICD-10-CM.
Related codes in the Z40 category
Z40.0
Encounter for prophylactic surgery for risk factors related to malignant neoplasms
Non-billable
Z40.8
Encounter for other prophylactic surgery
Non-billable
Z40.9
Encounter for prophylactic surgery, unspecified
Billable
Z40.00
Encounter for prophylactic removal of unspecified organ
Billable
Z40.01
Encounter for prophylactic removal of breast
Billable
Z40.02
Encounter for prophylactic removal of ovary(s)
Billable
Z40.03
Encounter for prophylactic removal of fallopian tube(s)
Billable
Z40.09
Encounter for prophylactic removal of other organ
Billable
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