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ICD-10 Guide
ICD-10 CodesP05.19

P05.19

Billable

Newborn small for gestational age, other

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

Code Description

ICD-10 P05.19 is a billable code used to indicate a diagnosis of newborn small for gestational age, other.

Key Diagnostic Point:

P05.19 refers to newborns who are classified as small for gestational age (SGA) due to factors other than the commonly recognized causes. SGA is defined as a birth weight below the 10th percentile for the gestational age. This condition can arise from various maternal factors, including inadequate maternal nutrition, chronic maternal diseases (such as hypertension or diabetes), placental insufficiency, or maternal substance abuse. Delivery complications such as preterm birth or intrauterine growth restriction (IUGR) can also contribute to SGA. Accurate coding requires a thorough understanding of the underlying causes and the clinical context, as SGA can be associated with increased risks of morbidity and mortality in the neonatal period. Clinicians must document the specific maternal conditions and complications that led to the SGA diagnosis to ensure appropriate coding and care planning.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of maternal factors influencing SGA
  • Differentiation between SGA and IUGR
  • Need for detailed clinical documentation
  • Potential for multiple contributing factors

Audit Risk Factors

  • Inadequate documentation of maternal conditions
  • Failure to specify the cause of SGA
  • Misclassification of SGA versus IUGR
  • Lack of clarity in gestational age determination

Specialty Focus

Medical Specialties

Neonatology

Documentation Requirements

Detailed records of birth weight, gestational age, and maternal health history.

Common Clinical Scenarios

NICU admissions for SGA infants requiring monitoring for hypoglycemia, thermoregulation issues, and feeding difficulties.

Billing Considerations

Consideration of long-term follow-up for developmental outcomes in SGA infants.

Pediatrics

Documentation Requirements

Comprehensive pediatric assessments including growth charts and developmental milestones.

Common Clinical Scenarios

Routine pediatric visits for SGA infants to monitor growth and development.

Billing Considerations

Awareness of potential long-term health issues associated with being SGA.

Coding Guidelines

Inclusion Criteria

Use P05.19 When
  • Follow ICD
  • 10 guidelines for coding SGA, ensuring accurate documentation of maternal factors and delivery complications
  • Use additional codes to specify any associated conditions

Exclusion Criteria

Do NOT use P05.19 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 SGA infants requiring initial assessment in the nursery.

Documentation Requirements

Document birth weight, gestational age, and any complications.

Specialty Considerations

Neonatologists should ensure thorough documentation of SGA status.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of SGA, enabling better tracking of neonatal outcomes and maternal health factors.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of SGA, enabling better tracking of neonatal outcomes and maternal health factors.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of SGA, enabling better tracking of neonatal outcomes and maternal health factors.

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 key factors to document for coding P05.19?

Key factors include maternal health conditions, gestational age, birth weight, and any delivery complications that may have contributed to the infant being classified as SGA.