2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 795, 951. 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 the other POA exempt codes in Persons encountering health services for examinations (Z00-Z13).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Child examination at birth with explicit context

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Z00.110: its own notes plus those printed at Z00.11, Z00, block Z00-Z13, and Chapter 21. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Health check for newborn under 8 days old

Excludes1

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

From Z00.11 Newborn health examination applies to 2 codes
  • health check for child over 28 days old (Z00.12-)
From Z00 Encounter for general examination without complaint, suspected or reported diagnosis applies to 13 codes
  • encounter for examination for administrative purposes (Z02.-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Z00 Encounter for general examination without complaint, suspected or reported diagnosis applies to 13 codes
  • encounter for pre-procedural examinations (Z01.81-)
  • special screening examinations (Z11-Z13)
From Block Z00-Z13 Persons encountering health services for examinations applies to 156 codes
  • examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Z00.11 Newborn health examination applies to 2 codes
  • code to identify any abnormal findings

Notes

General instructions on how these codes are used.

From Block Z00-Z13 Persons encountering health services for examinations applies to 156 codes
  • Nonspecific abnormal findings disclosed at the time of these examinations are classified to categories R70-R94.
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.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Z00.110, its category, or a range that includes it.

Excludes1 3

These codes carry an Excludes1 note naming Z00.110: they are not reported together with it, unless the two conditions are unrelated.

  • Z00.12 Encounter for routine child health examination
    health check for child under 29 days old (Z00.11-) names Z00.11-, which includes this code
  • Z00.12 Encounter for routine child health examination
    newborn health examination (Z00.11-) names Z00.11-, which includes this code
  • Z02.7 Encounter for issue of medical certificate
    encounter for general medical examination (Z00-Z01, Z02.0-Z02.6, Z02.8-Z02.9) names Z00-Z01, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Z00.110Overview

What is the ICD-10 code for health examination for newborn under 8 days old?

The ICD-10-CM code for health examination for newborn under 8 days old is Z00.110 (sometimes written as Z00110). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

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, 2026 through September 30, 2027.

What MS-DRG does Z00.110 group to?

On inpatient claims, health examination for newborn under 8 days old maps to MS-DRG 951, 795, with relative weights from 0.2022 to 0.5574 depending on complications. Higher weights mean higher Medicare reimbursement.

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.