ICD-10-CM Book 2025 Edition

Chapters ICD-10-CM Book Table of Content /
chapter 18 R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified /
R50-R69 General symptoms and signs /
R63 Symptoms and signs concerning food and fluid intake

  Billable ICD-10-CM Code R63.6
R63.6
Underweight
useAdditionalCode
code to identify body mass index (BMI), if known (Z68.-)
excludes1
abnormal weight loss (R63.4)
anorexia nervosa (F50.0-)
malnutrition (E40-E46)