2027 ICD-10-CM Diagnosis Code O34.593Maternal care for other abnormalities of gravid uterus, third trimester
ICD-10-CM Codes›O00-O9A›O30-O48›O34
- Billable — Valid for Submission
- Not Chronic
O34.593 is a billable ICD-10-CM diagnosis code for maternal care for other abnormalities of gravid uterus, third trimester. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 817 through 819, 831 through 833. 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 Maternal care for abnormality of pelvic organs.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for O34.593.
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to O34.593: its own notes plus those printed at O34 and Chapter 15. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- the listed conditions as a reason for hospitalization or other obstetric care of the mother, or for cesarean delivery before 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 for specific 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.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name O34.593, its category, or a range that includes it.
Applicable To 1
These notes mention O34.593.
Excludes1 2
These codes carry an Excludes1 note naming O34.593: they are not reported together with it, unless the two conditions are unrelated.
Excludes2 1
These codes carry an Excludes2 note naming O34.593: its condition is not part of those codes, and both may be reported when the patient has both.
Use Additional Code 1
These codes say to use an additional code from the note, and O34.593 is one of the codes named.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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.
Convert O34.593 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About O34.593Overview
Is O34.593 (Maternal care for other abnormalities of gravid uterus) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report maternal care for other abnormalities of gravid uterus, third trimester on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does O34.593 group to?
When maternal care for other abnormalities of gravid uterus, third trimester is the principal diagnosis on an inpatient stay, it groups to MS-DRG 833, 832, 831, 819, 818, 817, with relative weights from 0.5000 to 1.7586 depending on complications. Higher weights mean higher Medicare reimbursement.
Who can O34.593 be reported for?
The Medicare Code Editor checks maternal care for other abnormalities of gravid uterus, third trimester against patient demographics: this code is intended for maternity cases (age 9 through 64). Claims outside these limits are flagged as inconsistent.
Does O34.593 need an additional code?
When the condition applies, yes. The Use Additional Code note at O34, which applies to O34.593, reads: code for specific condition. The additional code is reported after O34.593.
What is the ICD-9 equivalent of O34.593?
Under the General Equivalence Mappings, maternal care for other abnormalities of gravid uterus, third trimester converts to ICD-9-CM 654.41 (abn uterus NEC-delivered), 654.42 (abn uterus NEC-del w p/p), and 654.43 (abn uterus NEC-antepart). The mapping is approximate, so confirm the match fits the documentation.
