2026 ICD-10-CM Diagnosis Code Z00.110Health examination for newborn under 8 days old

ICD-10-CM Codes›Z00–Z99›Z00-Z13›Z00

ICD-10-CM Z00.110
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z00.110 is a billable ICD-10-CM diagnosis code for health examination for newborn under 8 days old. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is restricted by the Medicare Code Editor to newborn patients (age 0), not accepted as a principal diagnosis, and exempt from POA reporting. Coders also document this condition as child examination at birth with explicit context. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Medical examination/evaluation.

Code Identity

ICD-10-CM Code
Z00.110
Billable Status
Yes — Valid for Submission
Code Describes
Health examination for newborn under 8 days old
Short Description
Health examination for newborn under 8 days old
Same as the full description in the CMS dataset.
Parent Code
Z00.11
Newborn health examination

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ00-Z13Persons encountering health services for examinations
CategoryZ00Encounter for general examination without complaint, suspected or reported diagnosis
This CodeZ00.110Health examination for newborn under 8 days old

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z00.110.

Perinatal / Newborn diagnoses
The Medicare Code Editor detects inconsistencies in perinatal / newborn cases by checking a patient's age and any diagnosis on the patient's record. The newborn code edits apply to patients age 0 years only; a subset of diagnoses which will only occur during the perinatal or newborn period of age 0 (e.g., tetanus neonatorum, health examination for newborn under 8 days old).
Unacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Present on Admission (POA)Billing

Z00.110 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Child examination at birth with explicit context

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Health check for newborn under 8 days old

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Newborn(infant) (liveborn) (singleton)
      • examination
        • under 8 days old

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR FAC014
Medical examination/evaluation
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

Baby Health Checkup

There are many new responsibilities when you have a baby. One of them is to make sure that your baby gets regular checkups, which are also called well-baby exams. These exams are important in making sure that your baby is growing and developing properly.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Z00.110 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
V20.31 Health supvsn nb <8 days
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z00.110Overview

Is Z00.110 (Newborn health examination) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report health examination for newborn under 8 days old on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Can Z00.110 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because health examination for newborn under 8 days old describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Who can Z00.110 be reported for?

The Medicare Code Editor checks health examination for newborn under 8 days old against patient demographics: this code is intended for newborn patients (age 0). Claims outside these limits are flagged as inconsistent.

Is Z00.110 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for health examination for newborn under 8 days old on inpatient claims.

What is the ICD-9 equivalent of Z00.110?

Under the General Equivalence Mappings, health examination for newborn under 8 days old converts to ICD-9-CM V20.31 (health supvsn nb <8 days). The mapping is a direct match.