2027 ICD-10-CM Diagnosis Code O82Encounter for cesarean delivery without indication
ICD-10-CM Codes›O00-O9A›O80-O82›O82
- Billable — Valid for Submission
- Not Chronic
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 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 998. 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
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for O82.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Cesarean section - pregnancy at term
- Cesarean section after onset of labor and rupture of membranes
- Cesarean section before onset of labor and rupture of membranes
- Deliveries by cesarean
- Delivery by cesarean hysterectomy
- Delivery by emergency cesarean section
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to O82: its own notes plus those printed at Chapter 15. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- supervision of normal pregnancy (Z34.-)
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.
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code to indicate outcome of delivery (Z37.0)
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
Notes
General instructions on how these codes are used.
- CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
- Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
- Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
- 1st trimester- less than 14 weeks 0 days
- 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
- 3rd trimester- 28 weeks 0 days until delivery
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name O82, its category, or a range that includes it.
Code First 1
These codes say to code first a condition named in the note, and O82 is one of the conditions named.
- Z3A Weeks of gestation
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Admission (for) See Also: Encounter (for);
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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.
Code HistoryHistory
Questions About O82Overview
What is the ICD-10 code for encounter for cesarean delivery without indication?
The ICD-10-CM code for encounter for cesarean delivery without indication is O82. It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
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, 2026 through September 30, 2027.
What MS-DRG does O82 group to?
When encounter for cesarean delivery without indication is the principal diagnosis on an inpatient stay, it groups to MS-DRG 998 (principal Diagnosis Invalid as Discharge Diagnosis), which carries a relative weight of 0. Higher weights mean higher Medicare reimbursement.
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.
Does O82 need an additional code?
When the condition applies, yes. The Use Additional Code note reads: code to indicate outcome of delivery (Z37.0). The additional code is reported after O82.
