ICD-10-CM 2027
ICD-10 code for eating disorder
From the official ICD-10-CM alphabetic index entry “Disorder (of) › eating (adult) (psychogenic)”. Page updated September 29, 2026.
About coding eating disorder
The ICD-10-CM code for eating disorder is F50.9 (Eating disorder, unspecified). The official index lists 12 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on F50.9.
Within F50, choose F50.9 (Eating disorder, unspecified) only when documentation doesn't support a more specific option: Anorexia nervosa (F50.0), Bulimia nervosa (F50.2) and other eating disorders (F50.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 887 (Other Mental Disorder Diagnoses, relative weight 1.1139), in MDC 19 (Mental Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific eating disorder codes (official index)
- anorexia
- binge F50.81 — Binge eating disorder
- bulimia F50.2 — Bulimia nervosa
- child F98.29 — Other feeding disorders of infancy and early childhood
- pica (in remission) F98.3 — Pica of infancy and childhood
- rumination disorder (in remission) F98.21 — Rumination disorder of infancy and childhood
- pica F50.89 — Other specified eating disorder
- adult (in remission) F50.83 — Pica in adults
- childhood (in remission) F98.3 — Pica of infancy and childhood
- rumination R11.10 — Vomiting, unspecified
- adult (in remission) F50.84 — Rumination disorder in adults
- infancy or childhood (in remission) F98.21 — Rumination disorder of infancy and childhood
- specified NEC F50.89 — Other specified eating disorder
Common questions about eating disorder ICD-10 codes
What is the ICD-10 code for eating disorder?
- F50.9 — Eating disorder, unspecified. More specific codes apply when the documentation supports them: F50.81, F50.2, F98.29, F98.3 and others below.
What is the ICD-10 code for binge eating disorder?
- F50.81 — Binge eating disorder (header code; choose a more specific subcode).
What is the ICD-10 code for bulimia eating disorder?
- F50.2 — Bulimia nervosa (header code; choose a more specific subcode).
What is the ICD-10 code for child eating disorder?
- F98.29 — Other feeding disorders of infancy and early childhood.
What is the ICD-10 code for pica eating disorder?
- F50.89 — Other specified eating disorder.
What is the ICD-10 code for rumination eating disorder?
- R11.10 — Vomiting, unspecified.
Is F50.9 billable?
- Yes. F50.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can F50.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict F50.9 as a principal diagnosis.
Is F50.9 a CC or MCC?
- No. F50.9 is neither a CC nor an MCC under MS-DRG v44.0.