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E55.9

Vitamin D deficiency, unspecified

Endocrine, nutritional and metabolic diseases Billable
Quick Reference
Low serum 25-hydroxyvitamin D level (typically <20 ng/mL)

Clinical Information

When to Use This Code

Low serum 25-hydroxyvitamin D level (typically <20 ng/mL)

Common Clinical Scenarios

  • Vitamin D supplementation prescribing
  • Osteoporosis workup
  • Fatigue with low vitamin D
  • Routine screening showing deficiency

Documentation Requirements

  • Document 25-OH vitamin D level
  • Note symptoms if present (bone pain, weakness, fatigue)
  • Record supplementation dose prescribed
  • Specify risk factors (limited sun exposure, malabsorption)

Coding Guidelines

Inclusion Terms

These terms are included in this code:

Vitamin D deficiencyHypovitaminosis DLow vitamin D

Exclusion Terms

Do NOT use this code for:

  • Rickets (E55.0)
  • Osteomalacia (M83.-)
  • Vitamin D-resistant disorders (E83.3-)

Coding Notes

Common deficiency, often asymptomatic
Repletion typically requires 50,000 IU weekly
Recheck levels after 8-12 weeks of supplementation

Related ICD-10 Codes

Consider these related codes based on patient presentation:

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Code Details

Code
E55.9
Category
Endocrine, nutritional and metabolic diseases
Billable Status
Billable

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