2027 ICD-10-CM Diagnosis Code Z29Encounter for other prophylactic measures

ICD-10-CM Codes›Z00–Z99›Z20-Z29›Z29

ICD-10-CM Z29
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Z29 is a non-billable ICD-10-CM category code for encounter for other prophylactic measures, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Z29.11, Z29.12, Z29.13, and Z29.14.

Code Identity

ICD-10-CM Code
Z29
Billable Status
No — Non-Billable Category
Code Describes
Encounter for other prophylactic measures
Short Description
Encounter for other prophylactic measures
Same as the full description in the CMS dataset.
Chapter
Z20-Z29
Persons with potential health hazards related to communicable diseases

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ20-Z29Persons with potential health hazards related to communicable diseases
CategoryZ29Encounter for other prophylactic measures
This CodeZ29Encounter for other prophylactic measures

Specific Coding for Encounter for other prophylactic measuresOverview

Non-specific codes like Z29 require more characters. Use one of these billable codes instead:

  • Z29.1 for Encounter for prophylactic immunotherapy

  • Use Z29.11 for Encounter for prophylactic immunotherapy for respiratory syncytial virus (RSV)

  • Use Z29.12 for Encounter for prophylactic antivenin

  • Use Z29.13 for Encounter for prophylactic Rho(D) immune globulin

  • Use Z29.14 for Encounter for prophylactic rabies immune globulin

  • Use Z29.3 for Encounter for prophylactic fluoride administration

  • Z29.8 for Encounter for other specified prophylactic measures

  • Use Z29.81 for Encounter for HIV pre-exposure prophylaxis

  • Use Z29.89 for Encounter for other specified prophylactic measures

  • Use Z29.9 for Encounter for prophylactic measures, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Z29: its own notes plus those printed at Chapter 21. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • desensitization to allergens (Z51.6)
  • prophylactic surgery (Z40.-)

Notes

General instructions on how these codes are used.

From Chapter 21 (Z00-Z99) Factors influencing health status and contact with health services applies to 1,425 codes
  • 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:
  • (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.
  • (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: CMS ICD-10-CM Tabular List. How to read instructional notes.

Code HistoryHistory

FY 2019AddedAdded to the ICD-10-CM code setEffective October 1, 2018.
FY 2020–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Z29Overview

What is the ICD-10 code for encounter for other prophylactic measures?

Z29 is the ICD-10-CM category for encounter for other prophylactic measures, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is Z29 (Encounter for other prophylactic measures) a billable code?

No. This is a category header that groups the codes for encounter for other prophylactic measures, and headers cannot be submitted on claims. Claims for encounter for other prophylactic measures need a more specific code from this category, such as Z29.11, Z29.12, and Z29.13.

Can Z29 be reported with Z51.6?

Not as a rule. The Excludes1 note on Z29 lists "desensitization to allergens (Z51.6)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).