R63.0

ICD-10Billable

Anorexia

Official ICD-10-CM descriptor (FY2026)

Anorexia

R63.0 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

Loss of appetite

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

anorexia nervosa (F50.0-)
loss of appetite of nonorganic origin (F50.89)

Related codes in R63

Where this code sits

Chapter: 18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Block: General symptoms and signs (R50-R69)
Parent code: R63

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.