2026 ICD-10-CM Diagnosis Code F50.021Anorexia nervosa, binge eating/purging type, moderate

ICD-10-CM Codes›F01–F99›F50-F59›F50

ICD-10-CM F50.021
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F50.021 is a billable ICD-10-CM diagnosis code for anorexia nervosa, binge eating/purging type, moderate. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Feeding and eating disorders.

Code Identity

ICD-10-CM Code
F50.021
Billable Status
Yes — Valid for Submission
Code Describes
Anorexia nervosa, binge eating/purging type, moderate
Short Description
Anorexia nervosa, binge eating/purging type, moderate
Same as the full description in the CMS dataset.
Parent Code
F50.02
Anorexia nervosa, binge eating/purging type

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF50-F59Behavioral syndromes associated with physiological disturbances and physical factors
CategoryF50Eating disorders
This CodeF50.021Anorexia nervosa, binge eating/purging type, moderate

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Anorexia nervosa, binge eating/purging type, with a body mass index of 16.0-16.99 kg/m2

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MBD010
Feeding and eating disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Code History & ChangesHistory

Replacement F50.021 replaces the following previously assigned code(s):

  • F50.02 - Anorexia nervosa, binge eating/purging type
FY 2025AddedAdded to the ICD-10-CM code setEffective October 1, 2024.
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About F50.021Overview

Is F50.021 (Anorexia nervosa, binge eating/purging type) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report anorexia nervosa, binge eating/purging type, moderate on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.