What is ICD-10 code F50.89?

F50.89 is the ICD-10-CM diagnosis code for Other specified eating disorder. 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. F50.89 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. F50.89 is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Yes. F50.89 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. F50.89 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

Which HCC does F50.89 map to under V28?

F50.89 has no payable CMS-HCC V28 mapping in the final FY2026 CMS file.

What RAF reference is published for F50.89?

F50.89 has no V28 reference coefficient because the final FY2026 source verifies no payable V28 mapping.

What is the V28 vs V24 difference for F50.89?

F50.89 has verified no payable V28 mapping in the final FY2026 source. Select a historical effective period before making any V24 comparison.

What documentation supports F50.89?

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 F50.89 is not a CMS-HCC V28 payment code in the verified current source, so MEAT is not the payment hook. Documentation still has to support the diagnosis if you report it.

2026 ICD-10-CM F50.89: Other specified eating disorder

F50.89 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC Buddy coding tools

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Code lookupF50.89Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Mental, Behavioral and Neurodevelopmental disorders (F01-F99) / Behavioral syndromes associated with physiological disturbances and physical factors (F50-F59)

F50.89

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Other specified eating disorder

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.

Buddy Insight

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.

CMS-HCC V28

N/A

—

Not risk-adjusted for this model/period.

Not mapped

CMS-HCC V24

Historical

Not used for standard CY2026 Medicare Advantage payment. Select a historical period to review V24.

Not used for CY2026 payment

ACA/HHS

N/A

—

Not risk-adjusted for this model/period.

Not mapped

ESRD/PACE

N/A

—

Not risk-adjusted for this model/period.

Not mapped

RXHCC

Mapped

HCC 133

Anxiety and Other Psychiatric...

Code-level coefficient reference

Code Book Path

Official

F50Eating disorders

F50.8Other eating disorders

F50.89Other specified eating disorder

Inclusion Terms

Official

Psychogenic loss of appetite

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for F50.89 in this effective period.

Related Child Codes

Official

F50.81Binge eating disorder

F50.82Avoidant/restrictive food intake disorder

F50.83Pica in adults

F50.84Rumination disorder in adults

Includes

Official

ICD-10-CM does not list Includes notes for F50.89 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for F50.89 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for F50.89 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for F50.89 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for F50.89 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance

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

MEAT Support

HCC Buddy guidance

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

Audit Caution

HCC Buddy guidance

Using F50.89 when full criteria for a more specific eating disorder are met — always code to highest specificity

Not documenting the specific eating disorder variant to justify the 'other specified' designation

Confusing atypical anorexia nervosa (F50.89) with anorexia nervosa (F50.0x) — the distinction is current body weight

Missing purging disorder as a distinct entity from bulimia nervosa — purging disorder lacks binge eating episodes

Common Mistakes

HCC Buddy guidance

F50.00-F50.02x (Anorexia nervosa codes) — use when FULL anorexia nervosa criteria are met including low body weight

F50.2x (Bulimia nervosa) — use when FULL bulimia criteria are met including compensatory behaviors

F50.81x (Binge eating disorder) — use when FULL binge eating disorder criteria are met

F50.9 (Eating disorder, unspecified) — use F50.89 when a specific variant IS identified that lacks its own code

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is F50.89 an HCC code?

F50.89 is not in the CMS-HCC V28 or V24 community payment model. F50.89 has a separate mapping under the Part D RxHCC model (HCC 133 (Anxiety and Other Psychiatric Disorders)); the applicable result needs member context.

Code: F50.89
Description: Other specified eating disorder
HCC (V28): No CMS-HCC V28 mapping
RAF reference coefficient: —
Billable: Yes
Payment year: 2026

HCC Category Mapping

RxHCCHCC 133, Anxiety and Other Psychiatric Disorders

Not separately weighted

These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. Weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.

Work F50.89 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →

MEAT Criteria for F50.89

For F50.89 to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically, it has to be re-documented and supported each calendar year.

MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
EEvaluate: test results, medication response, or physical findings reviewed by the provider
AAssess: explicit mention in the assessment or plan with acknowledgment of status
TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis

Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed F50.89 during that encounter, not just copy-forwarded from a problem list.

Coder workflow notes

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What This Code Means

F50.89 is the ICD-10-CM diagnosis code for other specified eating disorder. 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. F50.89 sits in the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99), within the section covering behavioral syndromes associated with physiological disturbances and physical factors (f50-f59).

F50.89 has no mapping under the CMS-HCC V28 or V24 community payment models. F50.89 has a separate mapping under the Part D RxHCC model (HCC 133 (Anxiety and Other Psychiatric Disorders)); the applicable result needs member context. Do not assign V28 risk adjustment value from this page; verify the applicable model and payment year before using this code for risk adjustment.

Use this code when the eating disorder has specific documented features that don't meet full criteria for other eating disorder diagnoses.

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for F50.89 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

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 weight
•F50.2x (Bulimia nervosa): use when FULL bulimia criteria are met including compensatory behaviors
•F50.81x (Binge eating disorder): use when FULL binge eating disorder criteria are met
•F50.9 (Eating disorder, unspecified): use F50.89 when a specific variant IS identified that lacks its own code
•F50.82 (ARFID): use when restrictive eating is NOT driven by body image; has its own code

Child Codes

F50.81Binge eating disorder

F50.82Avoidant/restrictive food intake disorder

F50.83Pica in adults

F50.84Rumination disorder in adults

F50.89Other specified eating disorder

Code Hierarchy

└F50Eating disorders └F50.8Other eating disorders └F50.89Other specified eating disorder

└F50.89Other specified eating disorder

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F50.89

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HCC Category Mapping

MEAT Criteria for F50.89

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What This Code Means

Coding Tips

Clinical Significance

Documentation Requirements

Commonly Confused Codes

Child Codes

Code Hierarchy

F50.89 code history

Work F50.89 in HCC Buddy

F50.89 ICD-10-CM Code: Other specified eating disorder

HCC Buddy Code Card

F50.89

Is F50.89 an HCC code?

HCC Category Mapping

MEAT Criteria for F50.89

Get the V28 mapping + MEAT cheat sheet

What This Code Means

Coding Tips

Clinical Significance

Documentation Requirements

Commonly Confused Codes

Child Codes

Code Hierarchy

F50.89 code history

Work F50.89 in HCC Buddy