2027 ICD-10-CM Diagnosis Code F50.020Anorexia nervosa, binge eating/purging type, mild
ICD-10-CM Codes›F01–F99›F50-F59›F50
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Risk Adjusts — HCC 153
- Chronic Condition
F50.020 is a billable ICD-10-CM diagnosis code for anorexia nervosa, binge eating/purging type, mild. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 883. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 35 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Feeding and eating disorders.
For Medicare Advantage risk adjustment, F50.020 maps to CMS-HCC Category 153 (Personality Disorders; Anorexia/Bulimia Nervosa) under the V28 model, adding a risk factor of about 0.396 for a community, non-dual, aged beneficiary in payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
F50.020 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2027.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to F50.020: its own notes plus those printed at F50.02, F50.0, F50, and Chapter 5. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- disorders of psychological development
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Anorexia nervosa, binge eating/purging type, with a body mass index greater than or equal to 17 kg/m2
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name F50.020, its category, or a range that includes it.
Excludes1 5
These codes carry an Excludes1 note naming F50.020: they are not reported together with it, unless the two conditions are unrelated.
- F50.2 Bulimia nervosaanorexia nervosa, binge eating/purging type (F50.02-) names F50.02-, which includes this code
- P92 Feeding problems of newborneating disorders (F50.-) names F50.-, which includes this code
- R63.0 Anorexiaanorexia nervosa (F50.0-) names F50.0-, which includes this code
- R63.6 Underweightanorexia nervosa (F50.0-) names F50.0-, which includes this code
- Z72.4 Inappropriate diet and eating habitseating disorders (F50.-) names F50.-, which includes this code
Excludes2 2
These codes carry an Excludes2 note naming F50.020: its condition is not part of those codes, and both may be reported when the patient has both.
Code First 1
These codes say to code first a condition named in the note, and F50.020 is one of the conditions named.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Anorexia Nervosa
an eating disorder that is characterized by the lack or loss of appetite, known as anorexia. other features include excess fear of becoming overweight; body image disturbance; significant weight loss; and refusal to maintain minimal normal weight.
Patient EducationClinical
Eating Disorders
Eating disorders are serious mental health disorders. They involve severe problems with your thoughts about food and your eating behaviors. You may eat much less or much more than you need.
The full article covers:
- What are eating disorders?
- What are the types of eating disorders?
- What causes eating disorders?
- Who is at risk for eating disorders?
- What are the symptoms of eating disorders?
- How is eating disorders diagnosed?
- What are the treatments for eating disorders?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Code History & ChangesHistory
Replacement F50.020 replaces the following previously assigned code(s):
- F50.02 - Anorexia nervosa, binge eating/purging type
Questions About F50.020Overview
What is the ICD-10 code for anorexia nervosa, binge eating/purging type, mild?
The ICD-10-CM code for anorexia nervosa, binge eating/purging type, mild is F50.020 (sometimes written as F50020). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is F50.020 (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, mild on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does F50.020 group to?
When anorexia nervosa, binge eating/purging type, mild is the principal diagnosis on an inpatient stay, it groups to MS-DRG 883 (disorders of Personality and Impulse Control), which carries a relative weight of 1.7398. Higher weights mean higher Medicare reimbursement.
Is F50.020 a CC or MCC?
CMS lists F50.020 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 35 closely related codes in its exclusion list.
Can F50.020 be reported with a code from F50.2?
Not as a rule. The Excludes1 note at F50.02, which applies to F50.020, lists "bulimia nervosa (F50.2-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What HCC is F50.020?
F50.020 (anorexia nervosa, binge eating/purging type, mild) maps to CMS-HCC Category 153 (Personality Disorders; Anorexia/Bulimia Nervosa), commonly written as HCC 153, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2027. In the Part D prescription drug model it maps to RxHCC 133.
Does F50.020 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, F50.020 adds a risk adjustment factor of about 0.396 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.199 to 0.464 depending on the payment segment). A more severe related category (HCC 151 and HCC 152) supersedes it when both are reported. See the full factor table on the HCC 153 category page.
