2027 ICD-10-CM Diagnosis Code O26Maternal care for other conditions predominantly related to pregnancy

ICD-10-CM Codes›O00-O9A›O20-O29›O26

ICD-10-CM O26
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

O26 is a non-billable ICD-10-CM category code for maternal care for other conditions predominantly related to pregnancy, so it cannot be submitted on claims. Use a more specific code from this category instead, such as O26.00, O26.01, O26.02, and O26.03.

Code Identity

ICD-10-CM Code
O26
Billable Status
No — Non-Billable Category
Code Describes
Maternal care for other conditions predominantly related to pregnancy
Short Description
Maternal care for oth conditions predom related to pregnancy
Chapter
O20-O29
Other maternal disorders predominantly related to pregnancy

Code Classification

ChapterO00-O9APregnancy, childbirth and the puerperium
SectionO20-O29Other maternal disorders predominantly related to pregnancy
CategoryO26Maternal care for other conditions predominantly related to pregnancy
This CodeO26Maternal care for other conditions predominantly related to pregnancy

Specific Coding for Maternal care for oth conditions predom related to pregnancyOverview

Non-specific codes like O26 require more characters. Use one of these billable codes instead:

  • O26.0 for Excessive weight gain in pregnancy

  • Use O26.00 for Excessive weight gain in pregnancy, unspecified trimester

  • Use O26.01 for Excessive weight gain in pregnancy, first trimester

  • Use O26.02 for Excessive weight gain in pregnancy, second trimester

  • Use O26.03 for Excessive weight gain in pregnancy, third trimester

  • O26.1 for Low weight gain in pregnancy

  • Use O26.10 for Low weight gain in pregnancy, unspecified trimester

  • Use O26.11 for Low weight gain in pregnancy, first trimester

  • Use O26.12 for Low weight gain in pregnancy, second trimester

  • Use O26.13 for Low weight gain in pregnancy, third trimester

  • O26.2 for Pregnancy care for patient with recurrent pregnancy loss

  • Use O26.20 for Pregnancy care for patient with recurrent pregnancy loss, unspecified trimester

  • Use O26.21 for Pregnancy care for patient with recurrent pregnancy loss, first trimester

  • Use O26.22 for Pregnancy care for patient with recurrent pregnancy loss, second trimester

  • Use O26.23 for Pregnancy care for patient with recurrent pregnancy loss, third trimester

  • O26.3 for Retained intrauterine contraceptive device in pregnancy

  • Use O26.30 for Retained intrauterine contraceptive device in pregnancy, unspecified trimester

  • Use O26.31 for Retained intrauterine contraceptive device in pregnancy, first trimester

  • Use O26.32 for Retained intrauterine contraceptive device in pregnancy, second trimester

  • Use O26.33 for Retained intrauterine contraceptive device in pregnancy, third trimester

  • O26.4 for Herpes gestationis

  • Use O26.40 for Herpes gestationis, unspecified trimester

  • Use O26.41 for Herpes gestationis, first trimester

  • Use O26.42 for Herpes gestationis, second trimester

  • Use O26.43 for Herpes gestationis, third trimester

  • O26.5 for Maternal hypotension syndrome

  • Use O26.50 for Maternal hypotension syndrome, unspecified trimester

  • Use O26.51 for Maternal hypotension syndrome, first trimester

  • Use O26.52 for Maternal hypotension syndrome, second trimester

  • Use O26.53 for Maternal hypotension syndrome, third trimester

  • O26.6 for Liver and biliary tract disorders in pregnancy, childbirth and the puerperium

  • O26.61 for Liver and biliary tract disorders in pregnancy

  • Use O26.62 for Liver and biliary tract disorders in childbirth

  • Use O26.63 for Liver and biliary tract disorders in the puerperium

  • O26.64 for Intrahepatic cholestasis of pregnancy

  • O26.7 for Subluxation of symphysis (pubis) in pregnancy, childbirth and the puerperium

  • O26.71 for Subluxation of symphysis (pubis) in pregnancy

  • Use O26.72 for Subluxation of symphysis (pubis) in childbirth

  • Use O26.73 for Subluxation of symphysis (pubis) in the puerperium

  • O26.8 for Other specified pregnancy related conditions

  • O26.81 for Pregnancy related exhaustion and fatigue

  • O26.82 for Pregnancy related peripheral neuritis

  • O26.83 for Pregnancy related renal disease

  • O26.84 for Uterine size-date discrepancy complicating pregnancy

  • O26.85 for Spotting complicating pregnancy

  • Use O26.86 for Pruritic urticarial papules and plaques of pregnancy (PUPPP)

  • O26.87 for Cervical shortening

  • O26.89 for Other specified pregnancy related conditions

  • O26.9 for Pregnancy related conditions, unspecified

  • Use O26.90 for Pregnancy related conditions, unspecified, unspecified trimester

  • Use O26.91 for Pregnancy related conditions, unspecified, first trimester

  • Use O26.92 for Pregnancy related conditions, unspecified, second trimester

  • Use O26.93 for Pregnancy related conditions, unspecified, third trimester

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to O26: its own notes plus those printed at block O20-O29 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 Block O20-O29 Other maternal disorders predominantly related to pregnancy applies to 260 codes
  • maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
  • maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99)
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 O26, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming O26: they are not reported together with it, unless the two conditions are unrelated.

  • Z03.7 Encounter for suspected maternal and fetal conditions ruled out
    known or suspected fetal anomalies affecting management of mother, not ruled out (O26.-, O35.-, O36.-, O40.-, O41.-)

Patient EducationClinical

Health Problems in Pregnancy

A health problem in pregnancy is any disease or condition that could affect your health or the health of your fetus. Some health problems may make it more likely that you will have a high-risk pregnancy. A high-risk pregnancy is one in which you, your fetus, or both are at higher risk for health problems than in a typical pregnancy.

The full article covers:

  • What are health problems in pregnancy?
  • What raises my risk for health problems during pregnancy?
  • Can chronic health conditions cause problems in pregnancy?
  • Can health problems in pregnancy be prevented?

Read the full article at MedlinePlus

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

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 O26Overview

What is the ICD-10 code for maternal care for other conditions predominantly related to pregnancy?

O26 is the ICD-10-CM category for maternal care for other conditions predominantly related to pregnancy, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is O26 a billable code?

No. This is a category header that groups the codes for maternal care for other conditions predominantly related to pregnancy, and headers cannot be submitted on claims. Claims for maternal care for other conditions predominantly related to pregnancy need a more specific code from this category, such as O26.00, O26.01, and O26.02.