2026 ICD-10-CM Diagnosis Code O80Encounter for full-term uncomplicated delivery

ICD-10-CM Codes›O00-O9A›O80-O82›O80

ICD-10-CM O80
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

O80 is a billable ICD-10-CM diagnosis code for encounter for full-term uncomplicated delivery. 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 maternity cases (age 9 through 64) and exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Uncomplicated pregnancy, delivery or puerperium.

Code Identity

ICD-10-CM Code
O80
Billable Status
Yes — Valid for Submission
Code Describes
Encounter for full-term uncomplicated delivery
Chapter
O80-O82
Encounter for delivery

Code Classification

ChapterO00-O9APregnancy, childbirth and the puerperium
SectionO80-O82Encounter for delivery
CategoryO80Encounter for full-term uncomplicated delivery
This CodeO80Encounter for full-term uncomplicated delivery

Code EditsBilling

Medicare Code Editor checks that affect claim validity for O80.

Maternity diagnoses
The Medicare Code Editor detects inconsistencies in maternity cases by checking a patient's age and any diagnosis on the patient's record. The maternity code edits apply to patients age ange is 9–64 years inclusive (e.g., diabetes in pregnancy, antepartum pulmonary complication).

Present on Admission (POA)Billing

O80 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.

  • Cervical effacement 10 percent
  • Cervical effacement 20 percent
  • Cervical effacement 30 percent
  • Cervical effacement 40 percent
  • Cervical effacement 50 percent
  • Cervical effacement 60 percent
  • Cervical effacement 70 percent
  • Cervical effacement 80 percent
  • Cervical effacement 90 percent
  • Cervix dilated
  • Cervix undilated
  • Complete placenta at delivery
  • Contraction of uterus during labor
  • Delivery normal
  • Effective uterine contractions
  • Expulsive uterine contractions
  • Fair uterine contractions
  • Finding of completeness of placenta
  • Finding of contraction state of uterus
  • Finding of effectiveness of uterine contraction
  • Finding of frequency of uterine contraction
  • Finding of pain of uterine contraction
  • Finding of passing of operculum
  • Finding of regularity of uterine contraction
  • Finding of sensation of gravid uterus
  • Finding of strength of uterine contraction
  • Fully effaced cervix
  • Good uterine contractions
  • Gravid uterus normal
  • Mother delivered
  • Normal delivery - occipitoanterior
  • Normal delivery but ante- or post- natal conditions present
  • Normal female reproductive function
  • Normal reproductive system function
  • Normal strength uterine contractions
  • Occasional uterine tightenings
  • Operculum passed
  • Painless uterine contractions
  • Quadruplet birth
  • Quintuplet birth
  • Regular uterine contractions
  • Rim of cervix palpable
  • Segments of uterus distinguishable in labor
  • Sextuplet birth
  • Spontaneous vertex delivery
  • Strong uterine contractions
  • Term birth of fraternal twins, both living
  • Term birth of fraternal twins, both stillborn
  • Term birth of identical twins, both living
  • Term birth of identical twins, both stillborn
  • Term birth of multiple newborns
  • Term birth of newborn quadruplets
  • Term birth of newborn quintuplets
  • Term birth of newborn sextuplets
  • Term birth of stillborn twins
  • Term pregnancy delivered
  • Transmission of uterine contraction wave
  • Twins - both live born
  • Twins - both stillborn
  • Umbilical cord not around baby's neck at delivery
  • Uterine contractions normal
  • Uterine contractions present
  • Uterine observation in labor
  • Uterus contracted
  • Vaginal delivery
  • Variable strength uterine contractions
  • Very strong uterine contractions

Tabular List NotesGuidance

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

Inclusion Terms

  • Delivery requiring minimal or no assistance, with or without episiotomy, without fetal manipulation e.g., rotation version or instrumentation forceps of a spontaneous, cephalic, vaginal, full-term, single, live-born infant. This code is for use as a single diagnosis code and is not to be used with any other code from chapter 15.

Use Additional Code

  • code to indicate outcome of delivery Z37.0

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.

    • Admission(for)
      • delivery, full-term, uncomplicated
    • Delivery(childbirth) (labor)
      • completely normal case
    • Delivery(childbirth) (labor)
      • normal
    • Delivery(childbirth) (labor)
      • spontaneous
    • Delivery(childbirth) (labor)
      • term pregnancy NOS
    • Delivery(childbirth) (labor)
      • uncomplicated
    • Encounter(with health service) (for)
      • delivery, full-term, uncomplicated

Clinical ClassificationClinical

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

CCSR PRG029
Uncomplicated pregnancy, delivery or puerperium
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Spontaneous Vertex Delivery

    the birth of a cephalically presenting fetus without operative instrumentation or assistance.

Patient EducationClinical

Childbirth

Childbirth is the process of giving birth to a baby. It includes labor and delivery of the fetus and the placenta. The placenta is the organ that supplies food and oxygen through the umbilical cord to your fetus during pregnancy.

The full article covers:

  • What is childbirth?
  • How do I know if I'm going into labor?
  • What are the stages of labor?
  • What are the options for pain relief during childbirth?

Read the full article at MedlinePlus

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

Convert O80 to ICD-9-CMHistory

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

ICD-9-CM
650 Normal delivery
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 O80Overview

Is O80 (Encounter for full-term uncomplicated delivery) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report encounter for full-term uncomplicated delivery on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Who can O80 be reported for?

The Medicare Code Editor checks encounter for full-term uncomplicated delivery against patient demographics: this code is intended for maternity cases (age 9 through 64). Claims outside these limits are flagged as inconsistent.

Is O80 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 encounter for full-term uncomplicated delivery on inpatient claims.

What is the ICD-9 equivalent of O80?

Under the General Equivalence Mappings, encounter for full-term uncomplicated delivery converts to ICD-9-CM 650 (normal delivery). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.