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ICD-10 Guide
ICD-10 CodesO24.4

O24.4

Billable

Gestational diabetes mellitus

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/08/2025

Code Description

ICD-10 O24.4 is a billable code used to indicate a diagnosis of gestational diabetes mellitus.

Key Diagnostic Point:

Gestational diabetes mellitus (GDM) is a form of diabetes that develops during pregnancy and typically resolves after childbirth. It is characterized by glucose intolerance that is first recognized during pregnancy, usually diagnosed through glucose screening tests. GDM can lead to various complications for both the mother and the fetus, including increased risk of cesarean delivery, hypertensive disorders, and macrosomia (large for gestational age). Management of GDM often involves dietary modifications, blood glucose monitoring, and, in some cases, insulin therapy to maintain optimal glucose levels. Regular fetal monitoring is crucial to assess fetal growth and well-being, as uncontrolled GDM can lead to adverse outcomes such as neonatal hypoglycemia and increased risk of obesity and type 2 diabetes in the child later in life. Effective management requires a multidisciplinary approach, including obstetricians, dietitians, and diabetes educators, to ensure both maternal and fetal health are prioritized throughout the pregnancy.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in diagnostic criteria for GDM based on gestational age and screening methods.
  • Need for precise documentation of blood glucose levels and insulin management.
  • Potential for coexisting conditions such as pre-existing diabetes or obesity.
  • Variations in treatment protocols and follow-up care across different healthcare settings.

Audit Risk Factors

  • Inadequate documentation of glucose monitoring and insulin administration.
  • Failure to document the patient's dietary management plan.
  • Lack of clear indication of fetal monitoring results.
  • Misclassification of GDM severity or failure to specify if it is controlled or uncontrolled.

Specialty Focus

Medical Specialties

Obstetrics and Gynecology

Documentation Requirements

Documentation must include results of glucose tolerance tests, treatment plans, and any complications arising from GDM.

Common Clinical Scenarios

A patient diagnosed with GDM at 24 weeks gestation requiring insulin therapy and regular fetal monitoring.

Billing Considerations

Coders must ensure accurate tracking of glucose levels and treatment adjustments, as well as any associated maternal or fetal complications.

Maternal-Fetal Medicine

Documentation Requirements

Detailed documentation of high-risk factors, including maternal obesity, family history of diabetes, and previous GDM.

Common Clinical Scenarios

Management of a high-risk pregnancy with GDM and additional complications such as preeclampsia.

Billing Considerations

High-risk scenarios require thorough documentation of both maternal and fetal assessments, including ultrasound findings and growth patterns.

Coding Guidelines

Inclusion Criteria

Use O24.4 When
  • According to ICD
  • 10 coding guidelines, O24
  • 4 should be used when a patient is diagnosed with gestational diabetes mellitus during pregnancy
  • Coders must ensure that the diagnosis is documented clearly and that any associated complications are also coded appropriately

Exclusion Criteria

Do NOT use O24.4 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99213CPT Code

Established patient office visit, level 3

Clinical Scenario

Used for routine follow-up visits for patients with GDM.

Documentation Requirements

Documentation must include assessment of blood glucose levels and management plan.

Specialty Considerations

Obstetricians should document any changes in treatment or complications.

83036CPT Code

Glucose tolerance test

Clinical Scenario

Performed to diagnose GDM during routine prenatal care.

Documentation Requirements

Results of the test must be documented clearly.

Specialty Considerations

Ensure that the timing of the test aligns with gestational age recommendations.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of gestational diabetes, enabling better tracking of patient outcomes and management strategies. The granularity of ICD-10 codes helps in understanding the complexities of GDM and its implications for maternal and fetal health.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of gestational diabetes, enabling better tracking of patient outcomes and management strategies. The granularity of ICD-10 codes helps in understanding the complexities of GDM and its implications for maternal and fetal health.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    American Diabetes Association - Gestational Diabetes

Coding & Billing References

  • •
    American Diabetes Association - Gestational Diabetes

Frequently Asked Questions

What is the difference between gestational diabetes and pre-existing diabetes?

Gestational diabetes is a form of diabetes that develops during pregnancy and typically resolves after childbirth, while pre-existing diabetes refers to type 1 or type 2 diabetes that existed before pregnancy. Accurate coding is essential to differentiate between these conditions to ensure appropriate management and care.