FY2027 ICD-10-CM reference
Z29: Encounter for other prophylactic measures
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Encounter for other prophylactic measures. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Nonbillable heading. Verified against the official FY2027 order file.
CMS-HCC V28
Not applicable to this nonbillable heading
CMS-HCC V24
Not applicable to this nonbillable heading
ESRD
Not applicable to this nonbillable heading
PACE
Not applicable to this nonbillable heading
RxHCC
Not applicable to this nonbillable heading
HHS-HCC
Not applicable to this nonbillable heading
More specific FY2027 codes
- Z29.1: Encounter for prophylactic immunotherapyNonbillable heading
- Z29.3: Encounter for prophylactic fluoride administrationBillable code
- Z29.8: Encounter for other specified prophylactic measuresNonbillable heading
- Z29.9: Encounter for prophylactic measures, unspecifiedBillable code
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Instructional note
Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
Source: Z00-Z99 (chapter, inherited).
Instructional note
(a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
Source: Z00-Z99 (chapter, inherited).
Instructional note
(b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
Source: Z00-Z99 (chapter, inherited).
Excludes1
desensitization to allergens (Z51.6)
Source: Z29 (category, direct).
Excludes1
prophylactic surgery (Z40.-)
Source: Z29 (category, direct).
Compare the FY2027 additions, removals and billable-status changes
What does Z29 mean in FY2027?
The official ICD-10-CM descriptor is Encounter for other prophylactic measures. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is Z29 billable in FY2027?
The FY2027 order file marks Z29 as a nonbillable heading. Select a complete billable child code.
Does Z29 map to an HCC?
Risk-model mapping is not applicable to this nonbillable heading. Check a complete billable child code.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.
Review the FY2026 April edition