2027 ICD-10-CM Diagnosis Code O75.9Complication of labor and delivery, unspecified

ICD-10-CM Codes›O00-O9A›O60-O77›O75

ICD-10-CM O75.9
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

O75.9 is a billable ICD-10-CM diagnosis code for complication of labor and delivery, unspecified. 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). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complications specified during childbirth.

Code Identity

ICD-10-CM Code
O75.9
Billable Status
Yes — Valid for Submission
Code Describes
Complication of labor and delivery, unspecified
Short Description
Complication of labor and delivery, unspecified
Same as the full description in the CMS dataset.
Parent Code
Other complications of labor and delivery, not elsewhere classified

Code Classification

ChapterO00-O9APregnancy, childbirth and the puerperium
SectionO60-O77Complications of labor and delivery
CategoryO75Other complications of labor and delivery, not elsewhere classified
This CodeO75.9Complication of labor and delivery, unspecified

Code EditsBilling

Medicare Code Editor checks that affect claim validity for O75.9.

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.

  • Abnormal delivery
  • Complication occurring during labor and delivery
  • Complication of pregnancy, childbirth and/or puerperium
  • Delivery AND/OR maternal condition affecting management
  • Delivery problem
  • Delivery problem for fetus
  • Disorder of labor / delivery
  • Fetal and/or maternal disorder during labor
  • Fetal disorder due to maternal disorder of delivery
  • Fetal disorder due to maternal disorder of labor
  • Fetal intrapartum disorder
  • Finding of first stage of labor
  • First stage of labor problem
  • Labor problem
  • Maternal disorder during delivery
  • Maternal disorder during labor
  • Second stage of labor problem

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to O75.9: 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.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium applies to 2,481 codes
  • 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.

From O75 Other complications of labor and delivery, not elsewhere classified applies to 10 codes
  • puerperal (postpartum) infection (O86.-)
  • puerperal (postpartum) sepsis (O85)
From Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium applies to 2,481 codes
  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium applies to 2,481 codes
  • 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.

From Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium applies to 2,481 codes
  • 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.

CCSR PRG023
Complications specified during childbirth
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Childbirth Problems

Childbirth is the process of giving birth to a baby. It includes labor and delivery. Usually everything goes well, but problems can happen. They may cause a risk to the mother, baby, or both. Some of the more common childbirth problems include:

Read the full article at MedlinePlus

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

Convert O75.9 to ICD-9-CMHistory

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

ICD-9-CM
659.91 Complic labor NOS-deliv
Approximate The match is approximate rather than exact.
ICD-9-CM
669.91 Comp lab/deliv NOS-deliv
Approximate The match is approximate rather than exact.
ICD-9-CM
669.92 Compl del NOS-del w p/p
Approximate The match is approximate rather than exact.
ICD-9-CM
669.94 Compl deliv NOS-postpart
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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About O75.9Overview

What is the ICD-10 code for complication of labor and delivery, unspecified?

The ICD-10-CM code for complication of labor and delivery, unspecified is O75.9 (sometimes written as O759). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is O75.9 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report complication of labor and delivery, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does O75.9 group to?

When complication of labor and delivery, unspecified 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 O75.9 be reported for?

The Medicare Code Editor checks complication of labor and delivery, unspecified 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 O75.9?

Under the General Equivalence Mappings, complication of labor and delivery, unspecified converts to ICD-9-CM 659.91 (complic labor NOS-deliv), 669.91 (comp lab/deliv NOS-deliv), and 669.92 (compl del NOS-del w p/p). The mapping is approximate, so confirm the match fits the documentation.