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ICD-10 Guide
ICD-10 CodesP05.9

P05.9

Billable

Newborn affected by slow intrauterine growth, unspecified

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

Code Description

ICD-10 P05.9 is a billable code used to indicate a diagnosis of newborn affected by slow intrauterine growth, unspecified.

Key Diagnostic Point:

Newborns affected by slow intrauterine growth, classified under ICD-10 code P05.9, are those who exhibit growth patterns below the expected range for their gestational age. This condition can arise from various maternal factors, including inadequate nutrition, chronic diseases (such as hypertension or diabetes), substance abuse, or placental insufficiency. Delivery complications, such as preterm birth or intrauterine infections, can also contribute to this condition. Clinically, these newborns may present with low birth weight, reduced body mass, and potential long-term developmental issues. Accurate diagnosis and management are crucial, as these infants may require specialized care in a neonatal intensive care unit (NICU) to monitor their growth and development closely. The unspecified nature of this code indicates that while the infant is affected by slow growth, the specific underlying cause has not been determined, necessitating further investigation and monitoring.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in maternal health factors contributing to slow growth.
  • Need for detailed documentation of maternal history and delivery complications.
  • Differentiation from other growth-related conditions.
  • Potential for co-morbidities requiring additional coding.

Audit Risk Factors

  • Inadequate documentation of maternal health history.
  • Failure to specify the underlying cause of slow growth.
  • Misclassification of growth-related conditions.
  • Inconsistent coding practices across different healthcare settings.

Specialty Focus

Medical Specialties

Neonatology

Documentation Requirements

Detailed records of birth weight, gestational age, and any complications during delivery.

Common Clinical Scenarios

Infants admitted to NICU for monitoring due to low birth weight and suspected intrauterine growth restriction.

Billing Considerations

Coders must ensure that all maternal factors and delivery complications are documented to support the diagnosis.

Pediatrics

Documentation Requirements

Ongoing assessments of growth and development milestones, including follow-up visits.

Common Clinical Scenarios

Pediatric evaluations of infants with a history of slow intrauterine growth, monitoring for developmental delays.

Billing Considerations

Pediatricians should document any interventions or referrals made for developmental support.

Coding Guidelines

Inclusion Criteria

Use P05.9 When
  • According to ICD
  • 10 coding guidelines, P05
  • 9 should be used when the newborn's slow growth is documented but the specific cause is not identified
  • Coders should ensure that all relevant maternal and delivery factors are recorded to support the diagnosis

Exclusion Criteria

Do NOT use P05.9 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99460CPT Code

Initial hospital care for newborns

Clinical Scenario

Used for the initial evaluation of a newborn with suspected slow growth.

Documentation Requirements

Documentation of birth 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, including slow intrauterine growth. This specificity aids in better tracking of outcomes and resource allocation in neonatal care.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of perinatal conditions, including slow intrauterine growth. This specificity aids in better tracking of outcomes and resource allocation in neonatal care.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of perinatal conditions, including slow intrauterine growth. This specificity aids in better tracking of outcomes and resource allocation in neonatal 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 are the common causes of slow intrauterine growth?

Common causes include maternal nutritional deficiencies, chronic health conditions, placental insufficiency, and environmental factors such as smoking or substance abuse.