2026 ICD-10-CM Diagnosis Code Z38.66Quintuplet liveborn infant, delivered by cesarean

ICD-10-CM Codes›Z00–Z99›Z30-Z39›Z38

ICD-10-CM Z38.66
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z38.66 is a billable ICD-10-CM diagnosis code for quintuplet liveborn infant, delivered by cesarean. 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) and exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Liveborn.

Code Identity

ICD-10-CM Code
Z38.66
Billable Status
Yes — Valid for Submission
Code Describes
Quintuplet liveborn infant, delivered by cesarean
Short Description
Quintuplet liveborn infant, delivered by cesarean
Same as the full description in the CMS dataset.
Parent Code
Z38.6
Other multiple liveborn infant, born in hospital

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ30-Z39Persons encountering health services in circumstances related to reproduction
CategoryZ38Liveborn infants according to place of birth and type of delivery
This CodeZ38.66Quintuplet liveborn infant, delivered by cesarean

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z38.66.

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).

Present on Admission (POA)Billing

Z38.66 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

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.

    • Infant(s)
      • liveborn (singleton)
        • quintuplet
          • born in hospital
            • by cesarean
    • Newborn(infant) (liveborn) (singleton)
      • quintuplet
        • born in hospital
          • by cesarean

Clinical ClassificationClinical

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

CCSR PNL001
Liveborn
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Cesarean Delivery

A cesarean delivery, also called a cesarean section or c-section, is surgery to deliver a baby. The baby is taken out through your abdomen (belly). In the United States, almost one in three babies are born this way. Some cesarean deliveries are planned.

The full article covers:

  • What is a cesarean delivery?
  • When is a cesarean delivery needed?
  • How is a cesarean delivery done?
  • What are the risks of a cesarean delivery?

Read the full article at MedlinePlus

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

Convert Z38.66 to ICD-9-CMHistory

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

ICD-9-CM
V34.01 Oth mult lb-in hosp w cs
Approximate The match is approximate rather than exact.
ICD-9-CM
V35.01 Oth mult sb-in hosp w cs
Approximate The match is approximate rather than exact.
ICD-9-CM
V36.01 Mult lb/sb-in hosp w cs
Approximate The match is approximate rather than exact.
ICD-9-CM
V37.01 Mult birth NOS-hosp w cs
Approximate The match is approximate rather than exact.

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 Z38.66Overview

Is Z38.66 (Other multiple liveborn infant, born in hospital) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report quintuplet liveborn infant, delivered by cesarean on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Who can Z38.66 be reported for?

The Medicare Code Editor checks quintuplet liveborn infant, delivered by cesarean against patient demographics: this code is intended for newborn patients (age 0). Claims outside these limits are flagged as inconsistent.

Is Z38.66 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 quintuplet liveborn infant, delivered by cesarean on inpatient claims.

What is the ICD-9 equivalent of Z38.66?

Under the General Equivalence Mappings, quintuplet liveborn infant, delivered by cesarean converts to ICD-9-CM V34.01 (oth mult lb-in hosp w cs), V35.01 (oth mult sb-in hosp w cs), and V36.01 (mult lb/sb-in hosp w cs). The mapping is approximate, so confirm the match fits the documentation.