loading…
R63.6 Underweight
BackR63Symptoms and signs concerning food and fluid intakeCategory8 →R63.0AnorexiaCategoryR63.1PolydipsiaCategoryR63.2PolyphagiaCategoryR63.3Feeding difficultiesCategory4 →R63.30Feeding difficulties, unspecifiedCategoryR63.31Pediatric feeding disorder, acuteCategoryR63.32Pediatric feeding disorder, chronicCategoryR63.39Other feeding difficultiesCategoryR63.4Abnormal weight lossCategoryR63.5Abnormal weight gainCategoryR63.6UnderweightCategoryR63.8Other symptoms and signs concerning food and fluid intakeCategory
CategoryCODABLE
R63.6
Underweight
EXCLUDES
Excludes1: abnormal weight loss (R63.4)
anorexia nervosa (F50.0-)
malnutrition (E40-E46)
anorexia nervosa (F50.0-)
malnutrition (E40-E46)
CODING RULE
Use additional code: code to identify body mass index (BMI), if known (Z68.-)
- Chapter
- XVIII · Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
- Section
- R50-R69
- Valid from
Source
CMS ICD-10-CM Tabular List, edition FY2026.