F50.89
BillableOther specified eating disorder
HCC Category Mapping
RxHCCHCC 133 — Personality Disorders, Anxiety, and Other Specified Mental Disorders
0.000What This Code Means
Other eating disorders that do not fit into the standard categories of anorexia nervosa, bulimia nervosa, or binge eating disorder, such as atypical presentations or mixed eating disorder features.
Coding Tips
- •Use this code when the eating disorder has specific documented features that don't meet full criteria for other eating disorder diagnoses
- •Include detailed documentation of the specific eating disorder presentation to justify use of this 'other specified' code
Clinical Significance
This code captures eating disorders that have a specific clinical presentation but do not meet full criteria for anorexia nervosa, bulimia nervosa, or binge eating disorder. Examples include atypical anorexia nervosa (all criteria met but weight in normal range), purging disorder (purging without binge eating), night eating syndrome, and subthreshold presentations. These conditions still carry significant medical and psychological morbidity.
Documentation Requirements
- ✓Documentation of the specific eating disorder presentation (atypical anorexia, purging disorder, night eating syndrome, etc.)
- ✓Explanation of why the condition does not meet criteria for a fully specified eating disorder
- ✓Evidence of clinically significant distress or functional impairment
- ✓Assessment of associated medical complications
- ✓Treatment plan appropriate to the specific eating disorder variant
Commonly Confused Codes
F50.00-F50.02x (Anorexia nervosa codes) — use when FULL anorexia nervosa criteria are met including low body weightF50.2x (Bulimia nervosa) — use when FULL bulimia criteria are met including compensatory behaviorsF50.81x (Binge eating disorder) — use when FULL binge eating disorder criteria are metF50.9 (Eating disorder, unspecified) — use F50.89 when a specific variant IS identified that lacks its own codeF50.82 (ARFID) — use when restrictive eating is NOT driven by body image; has its own code
Code Hierarchy
└F50Eating disorders└F50.8Other eating disorders└F50.89Other specified eating disorder
└F50.89Other specified eating disorder