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O82 ICD-10-CM Code: Encounter for cesarean delivery without indication

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
1 use-additional code

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43, Appendix B.

  • MS-DRG 998 — PRINCIPAL DIAGNOSIS INVALID AS DISCHARGE DIAGNOSIS (MDC 14)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for O82 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code to indicate outcome of delivery (Z37.0)

Coder workflow for O82

MedCoder structured workflow — derived from this code’s own official record

Before you code O82

  1. Confirm the condition is documented as complicating the pregnancy, childbirth, or the puerperium, and check the trimester where the code carries one and the fetus character where the category requires it. Chapter 15 codes belong on the maternal record only and take sequencing priority over codes from other chapters. It is the provider’s responsibility to state that a condition is not affecting the pregnancy; the trimester is assigned from the documentation (Guidelines I.C.15.a, I.C.15.a.1, I.C.15.a.3).

    Guide: How to choose an ICD-10-CM code →

Documentation check

The provider’s diagnostic statement
Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).
Trimester
Assigned from the documented trimester at the encounter, or the trimester in which the condition developed for inpatient stays (Guidelines I.C.15.a.3).
The associated condition or complication
Whether the associated condition the title names is documented; the “with” convention presumes some links, and a provider statement that the conditions are unrelated defeats it (Guidelines I.A.15).
The conditions the Use Additional Code note names
Reported with this code when documented; a conditional instruction (“if applicable”, “if known”) applies only when the record supports it.

Official instructions as workflow

  • Use Additional Code — after identifying O82(1 note)

    Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with O82 when it does. Where the instruction is conditional (“if applicable”, “if known”), it applies only when the record documents the condition.

    ReviewZ37.0

    See the official tabular notes · Guidelines I.A.13

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

Documentation: A condition the Use Additional Code note names is documented.

Coding question: Is a second code reported with O82?

Path: Review the Use Additional Code note and the code it names.

Reason: The additional code is reported when the record documents the condition; a conditional instruction applies only when its condition is met (Guidelines I.A.13).

ReviewZ37.0

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Code Overview

Encounter for cesarean delivery without indication is a billable ICD-10-CM diagnosis code (O82).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Indexed Clinical Terms (3)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

Verify Before Coding

  • Age-restricted: the Medicare Code Editor lists this as a maternity (age 9-64) diagnosis; other ages are presumed incorrect.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

Other codes that name O82 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 1 Code First instruction: Z3A — Weeks of gestation.

Each of these codes carries a Code First note naming this condition — when that code is reported, THIS code is sequenced first, ahead of it.

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

Named in the grouper logic of 1 MS-DRG: DRG 998 (MDC 14).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):PRG023 — Complications specified during childbirth (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Complications specified during childbirth).

O75.2 — Pyrexia during labor, not elsewhere classified, O75.3 — Other infection during labor, O75.4 — Other complications of obstetric surgery and procedures, O75.5 — Delayed delivery after artificial rupture of membranes, O75.81 — Maternal exhaustion complicating labor and delivery, O75.82 — Onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section, O75.89 — Other specified complications of labor and delivery, O75.9 — Complication of labor and delivery, unspecified, O76 — Abnormality in fetal heart rate and rhythm complicating labor and delivery, O77.0 — Labor and delivery complicated by meconium in amniotic fluid, O86.0 — Infection of obstetric surgical wound, O86.00 — Infection of obstetric surgical wound, unspecified, O86.01 — Infection of obstetric surgical wound, superficial incisional site, O86.02 — Infection of obstetric surgical wound, deep incisional site, O86.03 — Infection of obstetric surgical wound, organ and space site, O86.04 — Sepsis following an obstetrical procedure, O86.09 — Infection of obstetric surgical wound, other surgical site, O88.02 — Air embolism in childbirth, O88.12 — Amniotic fluid embolism in childbirth, O88.22 — Thromboembolism in childbirth, +91 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main term “Delivery”; these codes share that main term but sit in a different category of the Tabular List.

O75.5 — Delayed delivery after artificial rupture of membranes (delayed NOS, following rupture of membranes, artificial), O75.82 — Onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section (cesarean, occurring after 37 completed weeks of gestation but before 39 completed weeks gestation due toonset of labor), O75.89 — Other specified complications of labor and delivery (complicated, specified complication NEC), O75.9 — Complication of labor and delivery, unspecified (complicated), O76 — Abnormality in fetal heart rate and rhythm complicating labor and delivery (complicated, by, fetal, heart rate or rhythm), O77.0 — Labor and delivery complicated by meconium in amniotic fluid (complicated, by, meconium in amniotic fluid), O77.1 — Fetal stress in labor or delivery due to drug administration (complicated, by, fetal, stress, due to drug administration), O77.8 — Labor and delivery complicated by other evidence of fetal stress (complicated, by, fetal, hypoxia), O77.9 — Labor and delivery complicated by fetal stress, unspecified (complicated, by, fetal, stress), O80 — Encounter for full-term uncomplicated delivery (normal), O98.02 — Tuberculosis complicating childbirth (complicated, by, tuberculosis), O98.12 — Syphilis complicating childbirth (complicated, by, syphilis), O98.22 — Gonorrhea complicating childbirth (complicated, by, gonorrhea), O98.32 — Other infections with a predominantly sexual mode of transmission complicating childbirth (complicated, by, infection, sexually transmitted NEC), O98.42 — Viral hepatitis complicating childbirth (complicated, by, infection, viral hepatitis), O98.52 — Other viral diseases complicating childbirth (complicated, by, infection, viral NEC), O98.62 — Protozoal diseases complicating childbirth (complicated, by, protozoal disease), O98.72 — Human immunodeficiency virus [HIV] disease complicating childbirth (complicated, by, infection, human immunodeficiency virus), O98.82 — Other maternal infectious and parasitic diseases complicating childbirth (complicated, by, infection, specified NEC), O98.92 — Unspecified maternal infectious and parasitic disease complicating childbirth (complicated, by, infection), +366 more

Contextual Map

Every relationship of O82 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run O82 with these 2 related codes in Claim Check

Hierarchy

Use Additional Code

  • Z37.0 — Single live birth[Use Additional Code]: “code to indicate outcome of delivery (Z37.0)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Code First instructions

  • Z3A — Weeks of gestation[Code First]: “obstetric condition or encounter for delivery (O09-O60, O80-O82, O94-O9A)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Clinical classification (CCSR)

MS-DRG Grouper

Index entries

  • Admission (for), delivery, full-term, uncomplicated, cesarean, without indication[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Delivery (childbirth) (labor), cesarean (for), without indication[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Encounter (with health service) (for), delivery, full-term, uncomplicated, cesarean, without indication[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data
CMS/CDC ICD-10-CM FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page
Inpatient payment groups Official source data
CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43 Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data
CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder structured relationship
Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder explanation
Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "O82 — Encounter for cesarean delivery without indication." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/o82-encounter-for-cesarean-delivery-without-indication

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Encounter for cesarean delivery without indication

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027 (effective October 1, 2026), and none are recorded for this code. Note changes are tracked from FY2027 only.