Z29 vs Z40
Z29 (Encounter for other prophylactic measures) compared with Z40 (Encounter for prophylactic surgery), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. Z29 carries an Excludes1 note covering Z40: “prophylactic surgery (Z40.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| Z29Encounter for other prophylactic measures | Z40Encounter for prophylactic surgery | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) |
| Definition | Encounter for other prophylactic measures is a non-billable ICD-10-CM category code (Z29). | Encounter for prophylactic surgery is a non-billable ICD-10-CM category code (Z40). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources