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ICD-10 Guide
ICD-10 CodesP08.21

P08.21

Billable

Post-term newborn

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 P08.21 is a billable code used to indicate a diagnosis of post-term newborn.

Key Diagnostic Point:

Post-term newborn refers to infants born after 42 weeks of gestation. This condition is associated with various maternal factors, including advanced maternal age, obesity, and certain medical conditions such as diabetes or hypertension. Delivery complications may arise, including increased risk of meconium aspiration syndrome, oligohydramnios, and fetal distress during labor. Post-term infants may exhibit signs of placental insufficiency, leading to potential growth restrictions and other complications. Clinically, these newborns may require close monitoring for signs of respiratory distress, hypoglycemia, and other metabolic issues. The management of post-term newborns often involves a multidisciplinary approach, including obstetricians, neonatologists, and pediatricians, to ensure optimal outcomes. Proper coding is essential to reflect the complexity of care required for these infants, as they may need specialized interventions and monitoring in the neonatal intensive care unit (NICU).

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between post-term and other gestational age-related conditions.
  • Understanding maternal risk factors that contribute to post-term delivery.
  • Identifying associated complications that may arise in post-term newborns.
  • Documenting the clinical management and interventions required for post-term infants.

Audit Risk Factors

  • Inadequate documentation of gestational age.
  • Failure to document maternal risk factors.
  • Misclassification of post-term status.
  • Lack of clarity in the clinical management plan.

Specialty Focus

Medical Specialties

Neonatology

Documentation Requirements

Detailed records of the infant's condition, interventions, and outcomes.

Common Clinical Scenarios

Management of respiratory distress, hypoglycemia, and monitoring for signs of infection.

Billing Considerations

Ensure accurate gestational age assessment and documentation of any complications.

Pediatrics

Documentation Requirements

Comprehensive history of maternal health and delivery complications.

Common Clinical Scenarios

Follow-up care for developmental milestones and potential long-term effects of post-term birth.

Billing Considerations

Consider the implications of post-term birth on pediatric health and development.

Coding Guidelines

Inclusion Criteria

Use P08.21 When
  • Follow the official ICD
  • CM coding guidelines for perinatal conditions, ensuring accurate documentation of gestational age and any associated complications
  • Use additional codes to capture maternal factors and delivery complications as necessary

Exclusion Criteria

Do NOT use P08.21 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99460CPT Code

Initial hospital care, per day, for evaluation and management of a normal newborn

Clinical Scenario

Used for initial assessment of a post-term newborn in the nursery.

Documentation Requirements

Document the newborn's gestational age, weight, and any complications.

Specialty Considerations

Neonatologists should ensure thorough documentation of the infant's condition.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of perinatal conditions, including post-term newborns, which enhances the ability to capture the complexity of care and associated complications.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of perinatal conditions, including post-term newborns, which enhances the ability to capture the complexity of care and associated complications.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of perinatal conditions, including post-term newborns, which enhances the ability to capture the complexity of care and associated complications.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What are the common complications associated with post-term newborns?

Common complications include meconium aspiration syndrome, respiratory distress, hypoglycemia, and potential long-term developmental issues. Close monitoring and appropriate interventions are crucial.