2027 ICD-10-CM Diagnosis Code O24.435Gestational diabetes mellitus in puerperium, controlled by oral hypoglycemic drugs
ICD-10-CM Codes›O00-O9A›O20-O29›O24
- Billable — Valid for Submission
- Not Chronic
O24.435 is a billable ICD-10-CM diagnosis code for gestational diabetes mellitus in puerperium, controlled by oral hypoglycemic drugs. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 769, 776. 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 the puerperium, Diabetes mellitus without complication, and Diabetes or abnormal glucose tolerance complicating pregnancy; childbirth; or the puerperium.
This medical diagnosis code is frequently used in OB/GYN medical specialties to designate conditions such maternal disorders related to pregnancy.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for O24.435.
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to O24.435: 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.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Gestational diabetes mellitus in puerperium, controlled by oral antidiabetic drugs
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.
Use Additional Code
Add a second code, after this one, to fully describe the 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 O24.435, its category, or a range that includes it.
Applicable To 1
These notes mention O24.435.
Excludes1 9
These codes carry an Excludes1 note naming O24.435: they are not reported together with it, unless the two conditions are unrelated.
- E08 Diabetes mellitus due to underlying conditiongestational diabetes (O24.4-) names O24.4-, which includes this code
- E09 Drug or chemical induced diabetes mellitusgestational diabetes (O24.4-) names O24.4-, which includes this code
- E10 Type 1 diabetes mellitusgestational diabetes (O24.4-) names O24.4-, which includes this code
- E11 Type 2 diabetes mellitusgestational diabetes (O24.4-) names O24.4-, which includes this code
- E13 Other specified diabetes mellitusgestational diabetes (O24.4-) names O24.4-, which includes this code
- O99.81 Abnormal glucose complicating pregnancy, childbirth and the puerperiumgestational diabetes (O24.4-) names O24.4-, which includes this code
- R73 Elevated blood glucose leveldiabetes mellitus in pregnancy, childbirth and the puerperium (O24.-) names O24.-, which includes this code
- R73.0 Abnormal glucosegestational diabetes (O24.4-) names O24.4-, which includes this code
- Z86.32 Personal history of gestational diabetesgestational diabetes mellitus in current pregnancy (O24.4-) names O24.4-, which includes this code
Excludes2 1
These codes carry an Excludes2 note naming O24.435: its condition is not part of those codes, and both may be reported when the patient has both.
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.
Clinical InformationClinical
Diabetes, Gestational
diabetes mellitus induced by pregnancy but resolved at the end of pregnancy. it does not include previously diagnosed diabetics who become pregnant (pregnancy in diabetics). gestational diabetes usually develops in late pregnancy when insulin antagonistic hormones peaks leading to insulin resistance; glucose intolerance; and hyperglycemia.
Patient EducationClinical
Diabetes and Pregnancy
If you have diabetes, your blood glucose, or blood sugar, levels are too high. Glucose comes from the foods you eat. A hormone called insulin helps the glucose get into your cells to give them energy. With type 1 diabetes, your body does not make insulin. With type 2 diabetes, your body does not make or use insulin well.
The full article covers:
- What is diabetes?
- What is gestational diabetes?
- Who is more likely to develop gestational diabetes?
- How do I know if I have gestational diabetes?
- How can diabetes affect my pregnancy?
- How can I manage diabetes during pregnancy?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert O24.435 to ICD-9-CMHistory
Code History & ChangesHistory
Replacement O24.435 replaces the following previously assigned code(s):
- O24.439 - Gestational diabetes in the puerperium, unsp control
Questions About O24.435Overview
Is O24.435 (Gestational diabetes mellitus in the puerperium) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report gestational diabetes mellitus in puerperium, controlled by oral hypoglycemic drugs on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does O24.435 group to?
When gestational diabetes mellitus in puerperium, controlled by oral hypoglycemic drugs is the principal diagnosis on an inpatient stay, it groups to MS-DRG 769, 776, with relative weights from 0.6718 to 1.6666 depending on complications. Higher weights mean higher Medicare reimbursement.
Who can O24.435 be reported for?
The Medicare Code Editor checks gestational diabetes mellitus in puerperium, controlled by oral hypoglycemic drugs 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 O24.435?
Under the General Equivalence Mappings, gestational diabetes mellitus in puerperium, controlled by oral hypoglycemic drugs converts to ICD-9-CM 648.82 (abn glucose-deliv w p/p) and 648.84 (abn glucose-postpartum). The mapping is approximate, so confirm the match fits the documentation.
