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ICD-10 Guide
ICD-10 CodesP71.9

P71.9

Billable

Transitory neonatal disorder of calcium and magnesium metabolism, unspecified

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

Code Description

ICD-10 P71.9 is a billable code used to indicate a diagnosis of transitory neonatal disorder of calcium and magnesium metabolism, unspecified.

Key Diagnostic Point:

Transitory neonatal disorders of calcium and magnesium metabolism, particularly hypocalcemia, are conditions that can arise in newborns due to various factors, including maternal vitamin D deficiency, prematurity, or inadequate intake of calcium and magnesium. These disorders are characterized by transient imbalances in calcium and magnesium levels, which can lead to symptoms such as irritability, muscle spasms, and seizures. Hypocalcemia, specifically, is defined as a serum calcium level below the normal range for neonates, which can result in significant clinical manifestations if not promptly addressed. The condition is often diagnosed through serum electrolyte testing and may require interventions such as calcium supplementation or dietary modifications. While these disorders are typically self-limiting, they necessitate careful monitoring and management in the neonatal intensive care unit (NICU) or nursery settings to prevent complications and ensure optimal outcomes for affected infants.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in clinical presentation and symptoms among newborns.
  • Need for precise laboratory values to confirm diagnosis.
  • Differentiation from other metabolic disorders.
  • Potential for transient versus chronic conditions.

Audit Risk Factors

  • Inadequate documentation of clinical symptoms.
  • Failure to include laboratory results in medical records.
  • Misclassification of transient versus chronic conditions.
  • Lack of clear maternal history related to calcium and magnesium metabolism.

Specialty Focus

Medical Specialties

Neonatology

Documentation Requirements

Detailed records of laboratory results, clinical observations, and treatment plans.

Common Clinical Scenarios

Infants presenting with irritability or seizures in the NICU, requiring electrolyte monitoring.

Billing Considerations

Ensure that maternal health history is documented, particularly regarding nutritional status and any medications taken during pregnancy.

Pediatrics

Documentation Requirements

Comprehensive documentation of growth parameters and developmental milestones.

Common Clinical Scenarios

Follow-up visits for infants previously diagnosed with hypocalcemia or other metabolic disorders.

Billing Considerations

Consider the long-term implications of transient disorders on pediatric development.

Coding Guidelines

Inclusion Criteria

Use P71.9 When
  • Coders should adhere to the official ICD
  • CM guidelines, ensuring that all relevant clinical information is captured, including laboratory results and treatment interventions
  • Accurate coding requires understanding the nuances of transient versus chronic conditions

Exclusion Criteria

Do NOT use P71.9 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

36415CPT Code

Collection of venous blood by venipuncture

Clinical Scenario

Used for obtaining serum calcium levels in newborns.

Documentation Requirements

Document the reason for blood draw and any relevant clinical findings.

Specialty Considerations

Ensure that the procedure is linked to the diagnosis of hypocalcemia.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of neonatal conditions, improving the granularity of data collection and enhancing the ability to track and manage perinatal disorders effectively.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of neonatal conditions, improving the granularity of data collection and enhancing the ability to track and manage perinatal disorders effectively.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of neonatal conditions, improving the granularity of data collection and enhancing the ability to track and manage perinatal disorders effectively.

Resources

Clinical References

  • •
    American Academy of Pediatrics - Neonatal Care Guidelines

Coding & Billing References

  • •
    American Academy of Pediatrics - Neonatal Care Guidelines

Frequently Asked Questions

What are the common causes of transitory neonatal hypocalcemia?

Common causes include maternal vitamin D deficiency, prematurity, and inadequate intake of calcium during pregnancy. These factors can lead to transient imbalances in calcium levels in newborns.