Z29 ICD-10-CM Code: Encounter for other prophylactic measures
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Coding at a Glance
- Tabular directives
- 2 Excludes1
Coding instructions
Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for Z29 in the official ICD-10-CM tabular list, quoted as published.
Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025
Excludes1 — Not Coded Here
Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
- desensitization to allergens (Z51.6) Compare Z29 vs Z51.6 →
- prophylactic surgery (Z40.-) Compare Z29 vs Z40 →
Coder workflow for Z29
MedCoder structured workflow — derived from this code’s own official record
Before you code Z29
- Z29 is not reportable as written. Select the more specific code beneath it that the documentation supports. Codes are reported to the highest level of specificity the classification provides (Guidelines I.B.2).
ReviewZ29.1, Z29.3, Z29.8, Z29.9
See the relationships section · Guide: How to choose an ICD-10-CM code →
- Confirm the reason for the encounter this Z code records: the circumstance it records. Check whether the code may be reported as first-listed or principal — some Z codes are limited to one position — and do not report a history or status code for a condition documented as current. Z code categories and their reporting positions (Guidelines I.C.21.c, I.C.21.c.15).
- Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with Z29. Excludes1 conditions are not reported together with this code unless the record shows they are unrelated (Guidelines I.A.12.a).
Choose the right path
- Does the documentation support one of the more specific codes beneath Z29?
Yes → Select that code and continue the checks below on its own page.
No → Z29 cannot be reported as written; query for the specificity its subcategory needs. - Does the documentation support a condition named in Z29’s Excludes1 note?
Yes → Do not simply proceed: review the excluded code. Both are reported only when the record shows the two conditions are unrelated.
No → Continue.
Consider Z29. Then confirm the code is valid for the date of service in the Verify section.
Documentation check
- The provider’s diagnostic statement
- Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).
- The reason for the encounter
- Whether the code records the encounter’s purpose, a status, or a history — and whether it may be first-listed (Guidelines I.C.21.c).
Official instructions as workflow
Excludes1 — check before selecting Z29(2 notes)
Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with Z29: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.
See the official tabular notes · Guidelines I.A.12.a
Coding decision scenarios
Pattern scenarios for this code’s structure — decision rules, not clinical cases
Documentation: Both the condition Z29 describes and a condition named in its Excludes1 note are documented for the same encounter.
Coding question: Can both codes be reported?
Path: Review the Excludes1 note and the excluded code, and look for a provider statement on whether the two conditions are related.
Reason: Excludes1 means the two are not coded together; the exception is when the record shows the conditions are unrelated to each other (Guidelines I.A.12.a).
Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.
Code Overview
MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.
Official Coding Guidelines
Official source data — quoted verbatim from the CMS/NCHS Official Guidelines
Official source data — quoted verbatim from the CMS/NCHS Official Guidelines
Verbatim excerpts from the ICD-10-CM Official Guidelines for Coding and Reporting (CMS/NCHS) that govern this code.
Chapter 21: Factors influencing health status and contact with health services (Z00-Z99)
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
Verify Before Coding
From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.
Contextual Map
Every relationship of Z29 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.
Run Z29 with these 2 related codes in Claim Check
Hierarchy
- Z00-Z99 — Chapter 21: Factors Influencing Health Status and Contact with Health Services (Z00-Z99) (Z00-Z99)[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
- Z20-Z29 — Persons with potential health hazards related to communicable diseases[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
Excludes1
- Z40 — Encounter for prophylactic surgery[Excludes1]: “prophylactic surgery (Z40.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
- Z51.6 — Encounter for desensitization to allergens[Excludes1]: “desensitization to allergens (Z51.6)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
Nearest codes (10)
- Z29.1 — Encounter for prophylactic immunotherapy[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
- Z29.11 — Encounter for prophylactic immunotherapy for respiratory syncytial virus (RSV)[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
- Z29.12 — Encounter for prophylactic antivenin[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
- Z29.13 — Encounter for prophylactic Rho(D) immune globulin[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
- Z29.14 — Encounter for prophylactic rabies immune globulin[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
- Z29.3 — Encounter for prophylactic fluoride administration[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
- Z29.8 — Encounter for other specified prophylactic measures[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
- Z29.81 — Encounter for HIV pre-exposure prophylaxis[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
- and 2 more
Change history
- FY2017 — Added to the code set[Change history]— CMS release files (code change ledger) · icd10cm-fy2017
Common coding questions
Can Z29 be billed directly?
No. Z29 (Encounter for other prophylactic measures) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Sources for this page
Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.
- Code, title, tabular notes and index terms Official source data
- CMS/CDC ICD-10-CM FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page
- Coding guidelines Official source data
- ICD-10-CM Official Guidelines for Coding and Reporting (FY2026), quoted by section Release, file and checksum · Publisher’s page
- Claim edits Official source data
- CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page
- Change history and date-of-service validity Official source data
- CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
- Comparisons, relationships and the contextual map MedCoder structured relationship
- Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
- Summary and FAQ answers MedCoder explanation
- Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.
Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates
Cite this page
Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.
MedCoder.ai. "Z29 — Encounter for other prophylactic measures." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/z29-encounter-for-other-prophylactic-measures
Change history
- FY2017 — October 1, 2016Added to the code setEncounter for other prophylactic measuresFY2017 changes
Nearest Codes in This Family
Official ICD-10-CM classifications closest to Z29 in its code family, with their registry titles.
- Z29.1 — Encounter for prophylactic immunotherapy
- Z29.11 — Encounter for prophylactic immunotherapy for respiratory syncytial virus (RSV)
- Z29.12 — Encounter for prophylactic antivenin
- Z29.13 — Encounter for prophylactic Rho(D) immune globulin
- Z29.14 — Encounter for prophylactic rabies immune globulin
- Z29.3 — Encounter for prophylactic fluoride administration
- Z29.8 — Encounter for other specified prophylactic measures
- Z29.81 — Encounter for HIV pre-exposure prophylaxis
- Z29.89 — Encounter for other specified prophylactic measures
- Z29.9 — Encounter for prophylactic measures, unspecified