2026 ICD-10-CM Diagnosis Code O82Encounter for cesarean delivery without indication

ICD-10-CM CodesO00-O9AO80-O82O82

ICD-10-CM O82
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

O82 is a billable ICD-10-CM diagnosis code for encounter for cesarean delivery without indication. 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). Coders also document this condition as cesarean section - pregnancy at term. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complications specified during childbirth.

Code Identity

ICD-10-CM Code
O82
Billable Status
Yes — Valid for Submission
Code Describes
Encounter for cesarean delivery without indication
Chapter
O80-O82
Encounter for delivery

Code Classification

ChapterO00-O9APregnancy, childbirth and the puerperium
SectionO80-O82Encounter for delivery
CategoryO82Encounter for cesarean delivery without indication
This CodeO82Encounter for cesarean delivery without indication

Code EditsBilling

Medicare Code Editor checks that affect claim validity for O82.

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).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Cesarean section - pregnancy at term
  • Delivered by cesarean section - pregnancy at term
  • Deliveries by cesarean
  • Delivery by cesarean hysterectomy
  • Delivery by emergency cesarean section

Tabular List NotesGuidance

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

Use Additional Code

  • code to indicate outcome of delivery Z37.0

Index to Diseases and InjuriesGuidance

External Cause of Injuries IndexGuidance

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

    • Admission(for)
      • delivery, full-term, uncomplicated
        • cesarean, without indication
    • Delivery(childbirth) (labor)
      • cesarean (for)
        • without indication
    • Encounter(with health service) (for)
      • delivery, full-term, uncomplicated
        • cesarean, without indication

Clinical ClassificationClinical

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

CCSR PRG023
Complications specified during childbirth
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 O82 to ICD-9-CMHistory

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

ICD-9-CM
669.71 Cesarean delivery NOS
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 O82Overview

Is O82 (Encounter for cesarean delivery without indication) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report encounter for cesarean delivery without indication on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Who can O82 be reported for?

The Medicare Code Editor checks encounter for cesarean delivery without indication against patient demographics: this code is intended for maternity cases (age 9 through 64). Claims outside these limits are flagged as inconsistent.

What is the ICD-9 equivalent of O82?

Under the General Equivalence Mappings, encounter for cesarean delivery without indication converts to ICD-9-CM 669.71 (cesarean delivery NOS). The mapping is approximate, so confirm the match fits the documentation.

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.