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ICD-10 Guide
ICD-10 CodesO24.019

O24.019

Billable

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

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

Code Description

ICD-10 O24.019 is a billable code used to indicate a diagnosis of pre-existing type 1 diabetes mellitus, in pregnancy, unspecified trimester.

Key Diagnostic Point:

Pre-existing type 1 diabetes mellitus in pregnancy poses significant risks to both the mother and fetus. This condition requires careful management throughout the pregnancy to mitigate complications such as fetal macrosomia, preterm birth, and congenital anomalies. Insulin management is crucial, as pregnant women with type 1 diabetes may experience fluctuating insulin needs due to hormonal changes. Regular monitoring of blood glucose levels is essential to maintain glycemic control. Additionally, fetal monitoring through ultrasound and non-stress tests is often indicated to assess fetal well-being and growth. The unspecified trimester designation indicates that the coding does not specify whether the condition is being managed in the first, second, or third trimester, which can affect treatment protocols and monitoring strategies. Proper documentation of the patient's diabetes management plan, including insulin regimens and any complications, is vital for accurate coding and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in insulin management protocols based on trimester
  • Need for detailed documentation of blood glucose monitoring
  • Potential for multiple co-morbidities affecting pregnancy outcomes
  • Variations in fetal monitoring requirements based on maternal health status

Audit Risk Factors

  • Inadequate documentation of insulin management
  • Failure to document blood glucose levels and monitoring frequency
  • Lack of clear indication of trimester for care provided
  • Inconsistent coding of complications related to diabetes

Specialty Focus

Medical Specialties

Obstetrics and Gynecology

Documentation Requirements

Documentation must include detailed accounts of the patient's diabetes management, including insulin types, dosages, and frequency of monitoring.

Common Clinical Scenarios

Management of a pregnant patient with type 1 diabetes presenting for routine prenatal care, adjustments in insulin therapy during pregnancy, and monitoring for fetal growth abnormalities.

Billing Considerations

Coders must ensure that all aspects of diabetes management are documented, including any referrals to endocrinology or maternal-fetal medicine specialists.

Maternal-Fetal Medicine

Documentation Requirements

High-risk pregnancy documentation must include comprehensive assessments of maternal and fetal health, including ultrasound findings and any interventions.

Common Clinical Scenarios

High-risk consultations for patients with poorly controlled diabetes, management of complications such as diabetic ketoacidosis during pregnancy.

Billing Considerations

Special attention should be given to the documentation of fetal monitoring and any interventions required due to maternal diabetes.

Coding Guidelines

Inclusion Criteria

Use O24.019 When
  • Follow the official ICD
  • CM guidelines for coding diabetes in pregnancy, ensuring that the specific type of diabetes and its management are accurately reflected in the documentation

Exclusion Criteria

Do NOT use O24.019 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 diabetes management during pregnancy.

Documentation Requirements

Documentation must include a review of the patient's diabetes management and any changes in treatment.

Specialty Considerations

Obstetricians should ensure that diabetes management is integrated into overall prenatal care.

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 accuracy of data collection and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of diabetes in pregnancy, improving the accuracy of data collection and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

Resources

Clinical References

  • •
    American Diabetes Association - Diabetes Care in Pregnancy

Coding & Billing References

  • •
    American Diabetes Association - Diabetes Care in Pregnancy

Frequently Asked Questions

What is the significance of specifying the trimester for diabetes management in pregnancy?

Specifying the trimester is crucial as it affects the management strategies and monitoring protocols. Each trimester presents different risks and insulin requirements, which must be documented for accurate coding and care.