F50.84 Rumination disorder in adults

Billable ICD-10-CM code, FY2026.

Applicable to

• Rumination disorder in adults, in remission

Excludes1 (never code together)

• rumination disorder in infancy and childhood (F98.21)

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.

Medicare Code Edits (MCE v43.1 (April 2026))

• Adult diagnoses (age 15 through 124): Age conflict edit. These diagnoses are clinically expected only in patients age 15 through 124.

Code annotations containing back-references to F50.84

Back-references to F50.84

• Type 1 Excludes: F98.21 Rumination disorder of infancy and childhood ("rumination disorder in adults (F50.84)")

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 F50.84

• Disorder (of) › eating (adult) (psychogenic) › rumination › adult (in remission)
• Disorder (of) › rumination (infant or child) (in remission) › adult (in remission)
• Rumination › in adults (in remission)

Nearby codes

• F50.813 Binge eating disorder, extreme
• F50.814 Binge eating disorder, in remission
• F50.819 Binge eating disorder, unspecified
• F50.82 Avoidant/restrictive food intake disorder
• F50.83 Pica in adults
• F50.84 Rumination disorder in adults (this code)
• F50.89 Other specified eating disorder
• F50.9 Eating disorder, unspecified