Z40 Encounter for prophylactic surgery

The ICD-10-CM code for Encounter for prophylactic surgery is Z40 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter

21: Factors influencing health status and contact with health services (Z00-Z99)

Section

Z40-Z53: Encounters for other specific health care (Z40-Z53)

Category Z40

12 codes (9 billable)

FY2026 Status

Stable since FY2024

Official Coding Guidelines

List of miscellaneous Z codes with exceptions/notes

Miscellaneous Z codes/subcategories/categories: Z28 Immunization not carried out Except: Z28.3-, Underimmunization status Z29 Encounter for other prophylactic measures Z40 Encounter for prophylactic surgery Z41 Encounter for procedures for purposes other than remedying health state Except: Z41.9, Encounter for procedure for purposes other than remedying health state, unspecified Z53 Persons encountering health services for specific procedures and treatment, not carried out Z72 Problems related to lifestyle Note: These codes should be assigned only when the documentation specifies that the patient has an associated problem Z73 Problems related to life management difficulty Note: These codes should be assigned only when the documentation specifies that the patient has an associated problem. Z74 Problems related to care provider dependency Except: Z74.01, Bed confinement status Z75 Problems related to medical facilities and other health care Z76.0 Encounter for issue of repeat prescription

List of Z codes (partial; preceding guideline context missing)

Z31.81 Encounter for male factor infertility in female patient Z31.83 Encounter for assisted reproductive fertility procedure cycle Z31.84 Encounter for fertility preservation procedure Z34 Encounter for supervision of normal pregnancy Z39 Encounter for maternal postpartum care and examination Z38 Liveborn infants according to place of birth and type of delivery Z40 Encounter for prophylactic surgery Z42 Encounter for plastic and reconstructive surgery following medical procedure or healed injury Z51.0 Encounter for antineoplastic radiation therapy Z51.1- Encounter for antineoplastic chemotherapy and immunotherapy Z52 Donors of organs and tissues Except: Z52.9, Donor of unspecified organ or tissue Z76.1 Encounter for health supervision and care of foundling Z76.2 Encounter for health supervision and care of other healthy infant and child Z99.12 Encounter for respirator [ventilator] dependence during power failure

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool