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ICD-10 Guide
ICD-10 CodesO24.013

O24.013

Billable

Pre-existing type 1 diabetes mellitus, in pregnancy, third trimester

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

Code Description

ICD-10 O24.013 is a billable code used to indicate a diagnosis of pre-existing type 1 diabetes mellitus, in pregnancy, third trimester.

Key Diagnostic Point:

Pre-existing type 1 diabetes mellitus in pregnancy presents unique challenges, particularly in the third trimester. Women with this condition require meticulous management to maintain optimal glycemic control, as fluctuations in blood glucose levels can significantly impact both maternal and fetal health. During the third trimester, the risk of complications such as preeclampsia, fetal macrosomia, and neonatal hypoglycemia increases. Insulin therapy is often adjusted to accommodate the physiological changes of pregnancy, including increased insulin resistance. Regular fetal monitoring is essential, including ultrasound assessments to evaluate fetal growth and well-being, as well as non-stress tests to monitor fetal heart rate patterns. Education on dietary management and the importance of consistent blood glucose monitoring is crucial for these patients. Coordination of care among obstetricians, endocrinologists, and dietitians is vital to ensure comprehensive management throughout the pregnancy.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Need for precise documentation of diabetes management and insulin therapy adjustments.
  • Increased risk of complications requiring additional monitoring and interventions.
  • Variability in treatment protocols based on individual patient needs.
  • Potential for co-morbid conditions that may complicate coding.

Audit Risk Factors

  • Inadequate documentation of blood glucose levels and insulin adjustments.
  • Failure to document the multidisciplinary approach to care.
  • Lack of clear indication of fetal monitoring results.
  • Inconsistent coding of related complications.

Specialty Focus

Medical Specialties

Obstetrics and Gynecology

Documentation Requirements

Documentation must include detailed records of blood glucose monitoring, insulin therapy, and any complications arising during pregnancy.

Common Clinical Scenarios

Management of labor and delivery in patients with type 1 diabetes, including potential for cesarean delivery due to fetal macrosomia.

Billing Considerations

Consideration of the patient's pre-pregnancy health status and any existing diabetes-related complications.

Maternal-Fetal Medicine

Documentation Requirements

High-risk pregnancy documentation must include comprehensive assessments of fetal growth and maternal health.

Common Clinical Scenarios

Monitoring for signs of preeclampsia and fetal distress during labor.

Billing Considerations

In-depth evaluation of fetal well-being and potential interventions based on maternal glucose levels.

Coding Guidelines

Inclusion Criteria

Use O24.013 When
  • 10 coding guidelines for obstetrics require specificity in documenting the type of diabetes, trimester of pregnancy, and any associated complications
  • Accurate coding is essential for reimbursement and quality of care metrics

Exclusion Criteria

Do NOT use O24.013 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99203CPT Code

Office or other outpatient visit for the evaluation and management of a new patient

Clinical Scenario

Used for routine follow-up visits for diabetic management during pregnancy.

Documentation Requirements

Documentation must include a review of blood glucose logs and any changes in insulin therapy.

Specialty Considerations

Obstetricians should collaborate with endocrinologists for comprehensive care.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for greater specificity in coding diabetes in pregnancy, improving the accuracy of patient records and facilitating better management of care.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding diabetes in pregnancy, improving the accuracy of patient records and facilitating better management of care.

Reimbursement & Billing Impact

reimbursement and quality care metrics.

Resources

Clinical References

  • •
    American Diabetes Association - Diabetes and Pregnancy

Coding & Billing References

  • •
    American Diabetes Association - Diabetes and Pregnancy

Frequently Asked Questions

What are the key considerations for coding pre-existing type 1 diabetes in pregnancy?

Key considerations include documenting the patient's diabetes management, any complications that arise, and ensuring that the correct trimester is noted. It's also important to differentiate between pre-existing diabetes and gestational diabetes.