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ICD-10 Guide
ICD-10 CodesO24.012

O24.012

Billable

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

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

Code Description

ICD-10 O24.012 is a billable code used to indicate a diagnosis of pre-existing type 1 diabetes mellitus, in pregnancy, second trimester.

Key Diagnostic Point:

Pre-existing type 1 diabetes mellitus in pregnancy presents unique challenges for both the mother and fetus. During the second trimester, the physiological changes in a pregnant woman can significantly affect glycemic control. Insulin resistance typically increases as the pregnancy progresses, necessitating careful management of insulin therapy to maintain optimal blood glucose levels. Women with type 1 diabetes are at an elevated risk for complications such as preeclampsia, fetal growth abnormalities, and congenital malformations. Regular fetal monitoring is crucial to assess fetal well-being and growth, often involving ultrasound examinations and non-stress tests. The management plan should include a multidisciplinary approach involving obstetricians, endocrinologists, and dietitians to ensure both maternal and fetal health are prioritized 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 glycemic control necessitating frequent updates to treatment plans.
  • Potential for co-morbid conditions that may complicate coding.

Audit Risk Factors

  • Inadequate documentation of blood glucose monitoring and insulin adjustments.
  • Failure to document complications related to diabetes.
  • Lack of clear communication between specialties involved in care.
  • Insufficient detail in fetal monitoring records.

Specialty Focus

Medical Specialties

Obstetrics and Gynecology

Documentation Requirements

Detailed records of maternal health, diabetes management, and fetal assessments.

Common Clinical Scenarios

Management of insulin therapy adjustments, monitoring for preeclampsia, and addressing fetal growth concerns.

Billing Considerations

Ensure accurate coding of any complications arising from diabetes during pregnancy.

Maternal-Fetal Medicine

Documentation Requirements

Comprehensive documentation of high-risk assessments and interventions.

Common Clinical Scenarios

Management of high-risk pregnancies with pre-existing diabetes, including specialized ultrasound evaluations.

Billing Considerations

Focus on the coordination of care among multiple specialists and the need for detailed documentation of all interventions.

Coding Guidelines

Inclusion Criteria

Use O24.012 When
  • 10 coding guidelines require specificity in documenting the type of diabetes and its impact on pregnancy
  • Coders must ensure that the diabetes is classified correctly as pre
  • existing and that the trimester of pregnancy is accurately noted

Exclusion Criteria

Do NOT use O24.012 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

Document blood glucose levels, insulin adjustments, and any complications.

Specialty Considerations

Obstetricians should ensure that all aspects of diabetes management are included in the visit notes.

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

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.

Resources

Clinical References

  • •
    American Diabetes Association - Diabetes and Pregnancy

Coding & Billing References

  • •
    American Diabetes Association - Diabetes and Pregnancy

Frequently Asked Questions

What is the significance of coding O24.012 accurately?

Accurate coding of O24.012 is crucial for ensuring appropriate management of the mother and fetus, as it reflects the complexity of care required for women with pre-existing type 1 diabetes during pregnancy. It also impacts reimbursement and quality of care metrics.