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ICD-10 Guide
ICD-10 CodesP74.5

P74.5

Billable

Transitory tyrosinemia of newborn

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

Code Description

ICD-10 P74.5 is a billable code used to indicate a diagnosis of transitory tyrosinemia of newborn.

Key Diagnostic Point:

Transitory tyrosinemia of the newborn is a metabolic disorder characterized by elevated levels of tyrosine in the blood due to a temporary deficiency in the enzyme fumarylacetoacetate hydrolase (FAH). This condition typically presents in the first few days of life and is often asymptomatic. It is important to differentiate transitory tyrosinemia from hereditary tyrosinemia, which is a more severe and chronic condition. The elevated tyrosine levels can lead to transient metabolic disturbances, but with appropriate dietary management, the condition usually resolves within a few weeks. Monitoring of tyrosine levels and clinical symptoms is essential during this period. The condition is often diagnosed through newborn screening programs that measure amino acid levels in the blood. Early identification and management are crucial to prevent potential complications, including liver dysfunction and neurological issues. Overall, transitory tyrosinemia is a self-limiting condition that requires careful monitoring and supportive care.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiation from hereditary tyrosinemia
  • Need for precise documentation of metabolic screening results
  • Monitoring of dietary interventions and clinical outcomes
  • Potential for co-occurring metabolic disorders

Audit Risk Factors

  • Inaccurate documentation of enzyme levels
  • Failure to document dietary management plans
  • Misclassification of transitory vs. hereditary conditions
  • Inadequate follow-up records on clinical outcomes

Specialty Focus

Medical Specialties

Neonatology

Documentation Requirements

Detailed records of metabolic screening results, dietary interventions, and follow-up assessments.

Common Clinical Scenarios

Newborns presenting with elevated tyrosine levels during routine screening in the NICU.

Billing Considerations

Ensure accurate coding based on laboratory results and clinical assessments to avoid misdiagnosis.

Pediatrics

Documentation Requirements

Comprehensive documentation of growth and development assessments, dietary history, and metabolic evaluations.

Common Clinical Scenarios

Pediatric follow-up visits for newborns previously diagnosed with transitory tyrosinemia.

Billing Considerations

Consider the long-term monitoring of dietary intake and potential developmental impacts.

Coding Guidelines

Inclusion Criteria

Use P74.5 When
  • Follow the official ICD
  • CM guidelines for coding metabolic disorders, ensuring that all relevant clinical information is documented
  • Newborn
  • specific criteria include the timing of diagnosis and the need for follow
  • up assessments

Exclusion Criteria

Do NOT use P74.5 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

84110CPT Code

Amino acid analysis

Clinical Scenario

Used to confirm elevated tyrosine levels in newborns.

Documentation Requirements

Document the reason for testing and results clearly.

Specialty Considerations

Neonatologists should ensure that all metabolic screening results are included in the patient's chart.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of metabolic disorders, improving the accuracy of diagnoses and treatment tracking for conditions like transitory tyrosinemia.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of metabolic disorders, improving the accuracy of diagnoses and treatment tracking for conditions like transitory tyrosinemia.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of metabolic disorders, improving the accuracy of diagnoses and treatment tracking for conditions like transitory tyrosinemia.

Resources

Clinical References

  • •
    American Academy of Pediatrics - Newborn Screening

Coding & Billing References

  • •
    American Academy of Pediatrics - Newborn Screening

Frequently Asked Questions

What is the typical prognosis for a newborn diagnosed with transitory tyrosinemia?

Most newborns with transitory tyrosinemia have a good prognosis, as the condition is self-limiting and resolves with appropriate dietary management. Regular monitoring is essential to ensure normal development and prevent complications.