R63.0 Anorexia

Billable ICD-10-CM code, FY2026.

Applicable to

• Loss of appetite

Excludes1 (never code together)

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

Applies from R63 Symptoms and signs concerning food and fluid intake

Excludes1 (never code together)

• bulimia NOS (F50.2-)

MS-DRG index

Defines the logic of DRG(s) 640-641 in MDC 10.

Approximate ICD-9-CM (GEMs)

• 783.0 Anorexia

Code annotations containing back-references to R63.0

Back-references to R63.0

• Type 1 Excludes: F50 Eating disorders ("anorexia NOS (R63.0)")
• Type 1 Excludes: F50.0 Anorexia nervosa ("loss of appetite (R63.0)")

Diagnosis Index entries for R63.0

• Anorexia
• Appetite › lack or loss
• Dysorexia
• Lack of › appetite (see Anorexia)
• Loss (of) › appetite (see Anorexia)

Nearby codes

• R63 Symptoms and signs concerning food and fluid intake
• R63.0 Anorexia (this code)
• R63.1 Polydipsia
• R63.2 Polyphagia
• R63.3 Feeding difficulties
• R63.30 Feeding difficulties, unspecified
• R63.31 Pediatric feeding disorder, acute