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ICD-10 Guide
ICD-10 CodesO24.819

O24.819

Billable

Other pre-existing diabetes mellitus in pregnancy, unspecified trimester

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

Code Description

ICD-10 O24.819 is a billable code used to indicate a diagnosis of other pre-existing diabetes mellitus in pregnancy, unspecified trimester.

Key Diagnostic Point:

This code is used to classify cases of pre-existing diabetes mellitus that are not specifically categorized as type 1 or type 2 diabetes during pregnancy. It encompasses various forms of diabetes that may complicate pregnancy, including those that may not have been diagnosed prior to conception. Management of diabetes in pregnancy is critical to minimize risks to both the mother and fetus, including potential complications such as macrosomia, preterm birth, and congenital anomalies. Insulin management is often required to maintain optimal blood glucose levels, and regular fetal monitoring is essential to assess fetal growth and well-being. The unspecified trimester indicates that the coding does not specify whether the condition was identified in the first, second, or third trimester, which can impact management strategies and outcomes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in diabetes types and management protocols
  • Need for precise documentation of diabetes type and management
  • Potential for co-morbid conditions affecting pregnancy
  • Variations in fetal monitoring protocols based on diabetes severity

Audit Risk Factors

  • Inadequate documentation of diabetes management
  • Failure to specify the type of diabetes
  • Lack of fetal monitoring documentation
  • Inconsistent coding of related conditions

Specialty Focus

Medical Specialties

Obstetrics and Gynecology

Documentation Requirements

Documentation must include the type of diabetes, management plan, and any complications during pregnancy.

Common Clinical Scenarios

Management of a pregnant patient with pre-existing diabetes requiring insulin therapy and regular fetal monitoring.

Billing Considerations

Consideration of the impact of diabetes on labor and delivery, including potential for cesarean delivery.

Maternal-Fetal Medicine

Documentation Requirements

Detailed records of maternal-fetal assessments, including ultrasound findings and glucose monitoring results.

Common Clinical Scenarios

High-risk pregnancies involving pre-existing diabetes with potential complications such as preeclampsia or fetal growth restriction.

Billing Considerations

Close monitoring of both maternal and fetal health, with adjustments to management as necessary.

Coding Guidelines

Inclusion Criteria

Use O24.819 When
  • Follow the official ICD
  • CM guidelines for coding diabetes in pregnancy, ensuring that the type of diabetes is clearly documented and that any complications are noted
  • The trimester of diagnosis should be indicated when possible

Exclusion Criteria

Do NOT use O24.819 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 pre-existing diabetes in pregnancy.

Documentation Requirements

Documentation must include assessment of diabetes management and fetal monitoring.

Specialty Considerations

Obstetricians should ensure comprehensive care plans are documented.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of diabetes in pregnancy, improving the ability to capture the complexity of these cases and ensuring better management and outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of diabetes in pregnancy, improving the ability to capture the complexity of these cases and ensuring better management and outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of diabetes in pregnancy, improving the ability to capture the complexity of these cases and ensuring better management and outcomes.

Resources

Clinical References

  • •
    American College of Obstetricians and Gynecologists (ACOG)

Coding & Billing References

  • •
    American College of Obstetricians and Gynecologists (ACOG)

Frequently Asked Questions

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

Pre-existing diabetes refers to diabetes that was diagnosed before pregnancy, while gestational diabetes develops during pregnancy. Accurate coding is essential to reflect the correct condition and management.