F50.9 Eating disorder, unspecified

Billable ICD-10-CM code, FY2026.

Applicable to

• Atypical anorexia nervosa
• Atypical bulimia nervosa
• Feeding or eating disorder, unspecified
• Other specified feeding disorder

Applies from F50 Eating disorders

Excludes1 (never code together)

• anorexia NOS (R63.0)
• feeding problems of newborn (P92.-)
• polyphagia (R63.2)

Excludes2 (not included here)

• feeding difficulties (R63.3-)
• feeding disorder in infancy or childhood (F98.2-)

Risk adjustment (HCC)

• RxHCC V08: HCC 133 — Anxiety and Other Psychiatric Disorders

MS-DRG index

Defines the logic of DRG(s) 887 in MDC 19.

Approximate ICD-9-CM (GEMs)

• 307.50 Eating disorder, unspecified

Code annotations containing back-references to F50.9

Back-references to F50.9

• Type 1 Excludes: R13.0 Aphagia ("psychogenic aphagia (F50.9)")

Back-references to F50

• Type 2 Excludes: F98.2 Other feeding disorders of infancy and childhood ("anorexia nervosa and other eating disorders (F50.-)")
• Type 1 Excludes: P92 Feeding problems of newborn ("eating disorders (F50.-)")
• Type 2 Excludes: R63.3 Feeding difficulties ("eating disorders (F50.-)")
• Type 1 Excludes: Z72.4 Inappropriate diet and eating habits ("eating disorders (F50.-)")

Diagnosis Index entries for F50.9

• Anorexia › nervosa › atypical
• Aphagia › psychogenic
• Bulimia (nervosa) › atypical
• Bulimia (nervosa) › normal weight
• Disorder (of) › eating (adult) (psychogenic)
• Disorder (of) › feeding (infant or child) › or eating disorder
• Disorder (of) › feeding (infant or child) › specified NEC
• Disorder (of) › psychogenic NOS › appetite

Nearby codes

• F50.819 Binge eating disorder, unspecified
• F50.82 Avoidant/restrictive food intake disorder
• F50.83 Pica in adults
• F50.84 Rumination disorder in adults
• F50.89 Other specified eating disorder
• F50.9 Eating disorder, unspecified (this code)