ICD-10-CM > E00-E89 > E50-E64 > E55 E55 Vitamin D deficiency Non-Billable/Non-Specific Type 1 Excludes adult osteomalacia (M83.-)osteoporosis (M80.-)sequelae of rickets (E64.3) Codes E55.0Rickets, activeE55.9Vitamin D deficiency, unspecified