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ICD-10 Guide
ICD-10 CodesP05.09

P05.09

Billable

Newborn light for gestational age, 2500 grams and over

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

Code Description

ICD-10 P05.09 is a billable code used to indicate a diagnosis of newborn light for gestational age, 2500 grams and over.

Key Diagnostic Point:

P05.09 refers to newborns who are classified as light for gestational age (LGA) but weigh 2500 grams or more at birth. This condition is often associated with maternal factors such as poor nutrition, smoking, or chronic health issues during pregnancy, which can affect fetal growth. Delivery complications, including prolonged labor or the use of forceps, may also contribute to the newborn's weight status. While these infants may not be classified as low birth weight, their growth patterns can indicate potential health risks, including metabolic issues or developmental delays. Close monitoring and appropriate interventions are essential to ensure optimal outcomes for these newborns. The clinical management may involve nutritional support, developmental assessments, and follow-up care to address any emerging health concerns.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between LGA and other weight classifications
  • Understanding maternal health factors impacting fetal growth
  • Identifying delivery complications that may affect newborn weight
  • Navigating documentation requirements for accurate coding

Audit Risk Factors

  • Inadequate documentation of maternal health factors
  • Failure to specify delivery complications
  • Misclassification of newborn weight status
  • Lack of follow-up documentation for LGA infants

Specialty Focus

Medical Specialties

Neonatology

Documentation Requirements

Detailed records of birth weight, gestational age, and maternal health history are essential. Neonatologists should document any complications during delivery and the newborn's immediate postnatal condition.

Common Clinical Scenarios

Common scenarios include monitoring LGA infants for hypoglycemia or other metabolic disorders, and assessing their growth patterns in the NICU.

Billing Considerations

Coders should be aware of the potential for comorbidities in LGA infants and ensure that all relevant conditions are documented and coded.

Pediatrics

Documentation Requirements

Pediatricians should document growth assessments, developmental milestones, and any interventions provided to LGA infants.

Common Clinical Scenarios

Pediatric scenarios may involve follow-up visits for LGA infants to monitor growth and development, as well as addressing any parental concerns.

Billing Considerations

Considerations include the long-term health implications of being LGA and the need for ongoing developmental assessments.

Coding Guidelines

Inclusion Criteria

Use P05.09 When
  • Coders should adhere to official ICD
  • 10 guidelines, ensuring that all relevant clinical information is captured
  • Newborn
  • specific criteria include accurate gestational age assessment and weight classification

Exclusion Criteria

Do NOT use P05.09 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 assessments of LGA infants in the nursery or NICU.

Documentation Requirements

Documentation must include weight, gestational age, and any complications.

Specialty Considerations

Neonatologists should ensure comprehensive assessments 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 perinatal conditions, enhancing the ability to capture the nuances of newborn health statuses such as LGA.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of perinatal conditions, enhancing the ability to capture the nuances of newborn health statuses such as LGA.

Reimbursement & Billing Impact

impact care.

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 factors contribute to a newborn being classified as light for gestational age?

Factors include maternal health issues such as diabetes, hypertension, nutritional deficiencies, and complications during delivery that may affect fetal growth.