F50.21

Bulimia nervosa, mild

Risk-adjusting (HCC)Billable code

HCC risk adjustment mapping

CMS-HCC V28

HCC153

Personality Disorders; Anorexia/Bulimia Nervosa

RxHCC V08

RXHCC133

Anxiety and Other Psychiatric Disorders

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · F50.21
Synonyms

Bulimia nervosa with 1-3 episodes of inappropriate compensatory behavior per week

Inherited from F50.2Bulimia nervosa
Excludes 1

anorexia nervosa, binge eating/purging type (F50.02-)

Synonyms

Bulimia NOS Hyperorexia nervosa

Inherited from F50Eating disorders
Excludes 1

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

Excludes 2

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

Inherited from chapter 5Mental, Behavioral and Neurodevelopmental disorders
Includes

disorders of psychological development

Excludes 2

symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Official Guidelines for F50.21

FY 2026 ›