2027 ICD-10-CM Diagnosis Code O14.94Unspecified pre-eclampsia, complicating childbirth

ICD-10-CM Codes›O00-O9A›O10-O16›O14

ICD-10-CM O14.94
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

O14.94 is a billable ICD-10-CM diagnosis code for unspecified pre-eclampsia, complicating childbirth. 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 and Hypertension and hypertensive-related conditions complicating pregnancy; childbirth; and the puerperium.

Code Identity

ICD-10-CM Code
O14.94
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified pre-eclampsia, complicating childbirth
Short Description
Unspecified pre-eclampsia, complicating childbirth
Same as the full description in the CMS dataset.
Parent Code
O14.9
Unspecified pre-eclampsia

Code Classification

ChapterO00-O9APregnancy, childbirth and the puerperium
SectionO10-O16Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium
CategoryO14Pre-eclampsia
This CodeO14.94Unspecified pre-eclampsia, complicating childbirth

Code EditsBilling

Medicare Code Editor checks that affect claim validity for O14.94.

Maternity diagnoses
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).

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to O14.94: its own notes plus those printed at O14 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 O14 Pre-eclampsia applies to 20 codes
  • pre-existing hypertension with pre-eclampsia (O11)
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 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.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name O14.94, its category, or a range that includes it.

Includes 1

These notes mention O14.94.

  • O15 Eclampsia
    convulsions following conditions in O10-O14 and O16 names O10-O14, which includes this code

Applicable To 1

These notes mention O14.94.

  • P00.0 Newborn affected by maternal hypertensive disorders
    Newborn affected by maternal conditions classifiable to O10-O11, O13-O16 names O13-O16, which includes this code

Excludes1 1

These codes carry an Excludes1 note naming O14.94: they are not reported together with it, unless the two conditions are unrelated.

  • I10 Essential (primary) hypertension
    hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16) names O13-O16, which includes this code

Excludes2 2

These codes carry an Excludes2 note naming O14.94: its condition is not part of those codes, and both may be reported when the patient has both.

  • Block I10-I1A Hypertensive diseases
    hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16) names O13-O16, which includes this code
  • O99.4 Diseases of the circulatory system complicating pregnancy, childbirth and the puerperium
    hypertensive disorders (O10-O16) names O10-O16, which includes this code

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 No · outpatient No
CCSR PRG020
Hypertension and hypertensive-related conditions complicating pregnancy; childbirth; and the puerperium
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Pre-Eclampsia

    a complication of pregnancy, characterized by a complex of symptoms including maternal hypertension and proteinuria with or without pathological edema. symptoms may range between mild and severe. pre-eclampsia usually occurs after the 20th week of gestation, but may develop before this time in the presence of trophoblastic disease.

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 O14.94 to ICD-9-CMHistory

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

ICD-9-CM
642.41 Mild/NOS preeclamp-deliv
Approximate The match is approximate rather than exact.

Code History & ChangesHistory

Replacement O14.94 replaces the following previously assigned code(s):

  • O14.90 - Unspecified pre-eclampsia, unspecified trimester
FY 2019AddedAdded to the ICD-10-CM code setEffective October 1, 2018.
FY 2020–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About O14.94Overview

What is the ICD-10 code for unspecified pre-eclampsia, complicating childbirth?

The ICD-10-CM code for unspecified pre-eclampsia, complicating childbirth is O14.94 (sometimes written as O1494). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is O14.94 (Unspecified pre-eclampsia) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report unspecified pre-eclampsia, complicating childbirth on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does O14.94 group to?

When unspecified pre-eclampsia, complicating childbirth 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 O14.94 be reported for?

The Medicare Code Editor checks unspecified pre-eclampsia, complicating childbirth against patient demographics: this code is intended for maternity cases (age 9 through 64). Claims outside these limits are flagged as inconsistent.

Can O14.94 be reported with O11?

Not as a rule. The Excludes1 note at O14, which applies to O14.94, lists "pre-existing hypertension with pre-eclampsia (O11)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).