ICD-10-CM Codes Browse (Tabular) Diagnostic External Drug Neoplasm

R63.6 – Underweight

Coding Notes

Active

Billable, valid for HIPAA-covered transactions

Additional

code to identify body mass index (BMI), if known (Z68.-)

Type 1 Excludes

abnormal weight loss (R63.4)

anorexia nervosa (F50.0-)

malnutrition (E40-E46)

GEM Conversion to ICD-9 CM

783.22

Fs: 00000 – Underweight

MDC / MS-DRG Reference

DRG 640

MISCELLANEOUS DISORDERS OF NUTRITION, METABOLISM, FLUIDS AND ELECTROLYTES WITH MCC

DRG 641

MISCELLANEOUS DISORDERS OF NUTRITION, METABOLISM, FLUIDS AND ELECTROLYTES WITHOUT MCC

Back Reference of Diagnostic Codes

Underweight R63.6

Sibling Codes

R63.0

R63.1

R63.2

R63.3

Feeding difficulties

R63.4

Abnormal weight loss

R63.5

Abnormal weight gain

R63.8

Other symptoms and signs concerning food and fluid intake

Parent Sibling Codes

R60

Edema, not elsewhere classified

R61

Generalized hyperhidrosis

R62

Lack of expected normal physiological development in childhood and adults

R63

Symptoms and signs concerning food and fluid intake

R64

R65

Symptoms and signs specifically associated with systemic inflammation and infection

R68

Other general symptoms and signs

R69

Illness, unspecified

View in Tabular

Code	Title
R00-R99	Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
R50-R69	General symptoms and signs (R50-R69)
R63	Symptoms and signs concerning food and fluid intake
R63.6	Underweight Use Additional code to identify body mass index (BMI), if known (Z68.-) Type 1 Excludes abnormal weight loss (R63.4) anorexia nervosa (F50.0-) malnutrition (E40-E46)