2027 ICD-10-CM Diagnosis Code O75.82Onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section
ICD-10-CM Codes›O00-O9A›O60-O77›O75
- Billable — Valid for Submission
- Not Chronic
O75.82 is a billable ICD-10-CM diagnosis code for onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section. 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 deliveries by cesarean. 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 O75.82.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Deliveries by cesarean
- Delivery by elective cesarean section
- Labor established
- Spontaneous onset of labor
- Spontaneous onset of labor between 37 and 39 weeks gestation with planned cesarean section
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to O75.82: its own notes plus those printed at O75 and Chapter 15. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Delivery by (planned) cesarean section occurring after 37 completed weeks of gestation but before 39 completed weeks gestation due to (spontaneous) onset of labor
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.
Code First
The underlying condition named in the note is sequenced before this code.
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- 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.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
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 O75.82 to ICD-9-CMHistory
Code HistoryHistory
Questions About O75.82Overview
Is O75.82 (Other specified complications of labor and delivery) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does O75.82 group to?
When onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section 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 O75.82 be reported for?
The Medicare Code Editor checks onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section against patient demographics: this code is intended for maternity cases (age 9 through 64). Claims outside these limits are flagged as inconsistent.
What is coded first with O75.82?
The Code First note reads: to specify reason for planned cesarean section such as: cephalopelvic disproportion (normally formed fetus) (O33.9); previous cesarean delivery (O34.21-). When one of these applies, it is sequenced before O75.82.
What is the ICD-9 equivalent of O75.82?
Under the General Equivalence Mappings, onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section converts to ICD-9-CM 649.81 (spon labr w plan C/S-del) and 649.82 (lbr w plan C/S-del w p/p). The mapping is approximate, so confirm the match fits the documentation.
