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Z00.129 ICD-10-CM Code: Encounter for routine child health examination without abnormal findings

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
1 inclusion term · 4 Excludes1 · 3 Excludes2

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43, Appendix B.

  • MS-DRG 795 — NORMAL NEWBORN (MDC 15)
  • MS-DRG 951 — OTHER FACTORS INFLUENCING HEALTH STATUS (MDC 23)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for Z00.129 in the official ICD-10-CM tabular list, quoted as published.

Notes without a marker are published on Z00.129 itself; “inherited from” names the category or block whose note applies here.

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Encounter for routine child health examination NOS

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).

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Coder workflow for Z00.129

MedCoder structured workflow — derived from this code’s own official record

Before you code Z00.129

  1. Confirm the reason for the encounter this Z code records: an examination or encounter with no complaint or diagnosis. 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).

    Guide: Z codes as principal or first-listed diagnosis →

  2. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with Z00.129. Excludes1 conditions are not reported together with this code unless the record shows they are unrelated (Guidelines I.A.12.a).

    See the official tabular notes

Choose the right path

  1. Does the documentation support a condition named in Z00.129’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.

    ReviewZ00.11, Z02

Consider Z00.129. 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 associated condition or complication
Whether the associated condition the title names is documented; the “with” convention presumes some links, and a provider statement that the conditions are unrelated defeats it (Guidelines I.A.15).
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 Z00.129(4 notes)

    Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with Z00.129: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

    CompareZ00.11, Z02

    See the official tabular notes · Guidelines I.A.12.a

  • Excludes2 — not part of Z00.129(3 notes)

    Coding workflow: The conditions named in this note are not included in Z00.129. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

    CompareZ01.81, Z39

    See the official tabular notes · Guidelines I.A.12.b

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

Documentation: Both the condition Z00.129 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).

ReviewZ00.11, Z02

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

Encounter for routine child health examination without abnormal findings is a billable ICD-10-CM diagnosis code (Z00.129).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Indexed Clinical Terms (11)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

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)

Newborn Z codes/subcategories/categories: Z76.1 Encounter for health supervision and care of foundling Z00.1- Encounter for routine child health examination Z38 Liveborn infants according to place of birth and type of delivery

Chapter 20: External Causes of Morbidity (V00-Y99)

1) Used with any code in the range of A00.0-T88.9, Z00-Z99 An external cause code may be used with any code in the range of A00.0-T88.9, Z00-Z99, classification that represents a health condition due to an external cause. Though they are most applicable to injuries, they are also valid for use with such things as infections or diseases due to an external source, and other health conditions, such as a heart attack that occurs during strenuous physical activity.

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

The Z codes/categories for routine and administrative examinations: Z00 Encounter for general examination without complaint, suspected or reported diagnosis Z01 Encounter for other special examination without complaint, suspected or reported diagnosis

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

15) Z Codes That May Only be Principal/First-Listed Diagnosis The following Z codes/subcategories/categories may only be reported as the principal/first-listed diagnosis, except when there are multiple encounters on the same day and the medical records for the encounters are combined: Z00 Encounter for general examination without complaint, suspected or reported diagnosis Except: Z00.6 Z01 Encounter for other special examination without complaint, suspected or reported diagnosis Z02 Encounter for administrative examination Z04 Encounter for examination and observation for other reasons Z33.2 Encounter for elective termination of pregnancy

Verify Before Coding

  • Principal-diagnosis restriction. The Medicare Code Editor lists this code as unacceptable as a principal diagnosis: it describes a circumstance influencing health status rather than a current illness or injury being treated. It is valid as a secondary diagnosis.
  • Age-restricted: the Medicare Code Editor lists this as a pediatric (age 0-17) diagnosis; other ages are presumed incorrect.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

Other codes that name Z00.129 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 2 Excludes1 notes: Z00.11 — Newborn health examination (via Z00.12.-), Z02.7 — Encounter for issue of medical certificate (via Z00.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 1 Excludes2 note: Z13.4 — Encounter for screening for certain developmental disorders in childhood (via Z00.12.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 2 MS-DRGs: DRG 795 (MDC 15), DRG 951 (MDC 23).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):FAC014 — Medical examination/evaluation (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Principal diagnosis restriction (Medicare Code Editor)

Not acceptable as a principal diagnosis on an inpatient claim.

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Medical examination/evaluation).

Z00.00 — Encounter for general adult medical examination without abnormal findings, Z00.01 — Encounter for general adult medical examination with abnormal findings, Z00.110 — Health examination for newborn under 8 days old, Z00.111 — Health examination for newborn 8 to 28 days old, Z00.121 — Encounter for routine child health examination with abnormal findings, Z00.2 — Encounter for examination for period of rapid growth in childhood, Z00.3 — Encounter for examination for adolescent development state, Z00.5 — Encounter for examination of potential donor of organ and tissue, Z00.6 — Encounter for examination for normal comparison and control in clinical research program, Z00.70 — Encounter for examination for period of delayed growth in childhood without abnormal findings, Z00.71 — Encounter for examination for period of delayed growth in childhood with abnormal findings, Z00.8 — Encounter for other general examination, Z01.00 — Encounter for examination of eyes and vision without abnormal findings, Z01.01 — Encounter for examination of eyes and vision with abnormal findings, Z01.020 — Encounter for examination of eyes and vision following failed vision screening without abnormal findings, Z01.021 — Encounter for examination of eyes and vision following failed vision screening with abnormal findings, Z01.10 — Encounter for examination of ears and hearing without abnormal findings, Z01.110 — Encounter for hearing examination following failed hearing screening, Z01.118 — Encounter for examination of ears and hearing with other abnormal findings, Z01.12 — Encounter for hearing conservation and treatment, +15 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main terms “Examination”, “Hearing examination”, “Test, tests, testing”, …; these codes share that main term but sit in a different category of the Tabular List.

O36.01 — Maternal care for anti-D [Rh] antibodies (Rh factor, affecting management of pregnancy NEC, anti-D antibody), O36.09 — Maternal care for other rhesus isoimmunization (Rh factor, affecting management of pregnancy NEC), O80 — Encounter for full-term uncomplicated delivery (delivery, full-term, uncomplicated), O82 — Encounter for cesarean delivery without indication (delivery, full-term, uncomplicated, cesarean, without indication), P55.1 — ABO isoimmunization of newborn (ABO, in newborn), R75 — Inconclusive laboratory evidence of human immunodeficiency virus [HIV] (HIV, nonconclusive), R76.11 — Nonspecific reaction to tuberculin skin test without active tuberculosis (Mantoux, abnormal result), Z01.00 — Encounter for examination of eyes and vision without abnormal findings (eye), Z01.01 — Encounter for examination of eyes and vision with abnormal findings (eye, with abnormal findings), Z01.020 — Encounter for examination of eyes and vision following failed vision screening without abnormal findings (eye, following failed vision screening), Z01.021 — Encounter for examination of eyes and vision following failed vision screening with abnormal findings (eye, following failed vision screening, with abnormal findings), Z01.10 — Encounter for examination of ears and hearing without abnormal findings (ear), Z01.110 — Encounter for hearing examination following failed hearing screening (following failed hearing screening), Z01.118 — Encounter for examination of ears and hearing with other abnormal findings (ear, with abnormal findings NEC), Z01.12 — Encounter for hearing conservation and treatment (for hearing conservation and treatment), Z01.20 — Encounter for dental examination and cleaning without abnormal findings (teeth), Z01.21 — Encounter for dental examination and cleaning with abnormal findings (teeth, with abnormal findings), Z01.30 — Encounter for examination of blood pressure without abnormal findings (blood pressure), Z01.31 — Encounter for examination of blood pressure with abnormal findings (blood pressure, with abnormal findings), Z01.411 — Encounter for gynecological examination (general) (routine) with abnormal findings (pelvic, with abnormal findings), +206 more

Contextual Map

Every relationship of Z00.129 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 Z00.129 with these 3 related codes in Claim Check

Hierarchy

Referenced by Excludes1 notes

Referenced by Excludes2 notes

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

Index entries (11)

  • Admission (for), examination at health care facility (adult), hearing, infant or child (over 28 days old)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Admission (for), examination at health care facility (adult), vision, infant or child (over 28 days old)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Admission (for), vision examination, infant or child (over 28 days old)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Examination (for) (following) (general) (of) (routine), child (over 28 days old)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Examination (for) (following) (general) (of) (routine), hearing, infant or child (over 28 days old)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Examination (for) (following) (general) (of) (routine), vision, infant or child (over 28 days old)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Hearing examination, infant or child (over 28 days old)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Immunization, appropriate for age, child (over 28 days old)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • and 3 more

Nearest codes (18)

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

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
Inpatient payment groups Official source data
CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43 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

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Encounter for routine child health examination without abnormal findings

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027 (effective October 1, 2026), and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to Z00.129 in its code family, with their registry titles.

View all codes in the Z00 family