2026 ICD-10-CM Diagnosis Code O31.20X5Continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester, fetus 5
O31.20X5 is a billable ICD-10-CM diagnosis code for continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester, fetus 5. The 7th character 5 identifies fetus 5 in a multiple gestation pregnancy. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) 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 Multiple gestation.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for O31.20X5.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Miscarriage
A miscarriage is an unexpected loss of pregnancy before the 20th week. Most miscarriages happen very early in the pregnancy, often before a woman even knows she is pregnant.
The full article covers:
- What is a miscarriage?
- What causes a miscarriage?
- What are the signs of a miscarriage?
- How is a miscarriage diagnosed?
- What is the treatment for a miscarriage?
- Can a miscarriage be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert O31.20X5 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About O31.20X5Overview
Is O31.20X5 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester, fetus 5 on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character 5 in O31.20X5 mean?
The final character 5 identifies the fetus in a multiple gestation pregnancy: this code reports continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester for fetus 5.
What MS-DRG does O31.20X5 group to?
When continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester, fetus 5 is the principal diagnosis on an inpatient stay, it groups to MS-DRG 817, 818, 819, 831, 832, 833, with relative weights from 0.5229 to 1.6880 depending on complications. Higher weights mean higher Medicare reimbursement.
Who can O31.20X5 be reported for?
The Medicare Code Editor checks continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester, fetus 5 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 O31.20X5?
Under the General Equivalence Mappings, continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester, fetus 5 converts to ICD-9-CM 651.60 (mult ges w fet loss-unsp). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
