Name: Anorexia nervosa, binge eating/purging type, mild
Creator: MedCoder.ai

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives: 1 inclusion term · 6 Excludes1 · 2 Excludes2
Risk adjustment: CMS-HCC V28: 1 category · RxHCC V08 category 133

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43, Appendix B.

MS-DRG 883 — DISORDERS OF PERSONALITY AND IMPULSE CONTROL (MDC 19)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Risk Adjustment (CMS-HCC)

Payment categories this diagnosis maps to under CMS-HCC V28, payment year 2026.

HCC 153 — Personality Disorders; Anorexia/Bulimia Nervosa (supersedes HCC 154, HCC 155)

Other models: RxHCC V08 HCC 133

Risk scores depend on the enrollee's full accepted diagnosis set and segment; a category mapping alone does not determine payment.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for F50.020 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Notes without a marker are published on F50.020 itself; “inherited from” names the category or block whose note applies here.

Inclusion Terms

Alternative terms the tabular list files under this code.

Anorexia nervosa, binge eating/purging type, with a body mass index greater than or equal to 17 kg/m2

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

bulimia nervosa (F50.2-) inherited from F50.02Compare F50.020 vs F50.2 →
loss of appetite (R63.0) inherited from F50.0Compare F50.020 vs R63.0 →
psychogenic loss of appetite (F50.89) inherited from F50.0Compare F50.020 vs F50.89 →
anorexia NOS (R63.0) inherited from F50Compare F50.020 vs R63.0 →
feeding problems of newborn (P92.-) inherited from F50Compare F50.020 vs P92 →
polyphagia (R63.2) inherited from F50Compare F50.020 vs R63.2 →

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

feeding difficulties (R63.3-) Compare F50.020 vs R63.3 →
feeding disorder in infancy or childhood (F98.2-) Compare F50.020 vs F98.2 →

Source: inherited from F50

Coder workflow for F50.020

MedCoder structured workflow — derived from this code’s own official record

Before you code F50.020

Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with F50.020. Excludes1 conditions are not reported together with this code unless the record shows they are unrelated (Guidelines I.A.12.a).
See the official tabular notes

Choose the right path

Does the documentation support a condition named in F50.020’s Excludes1 note?
Yes → Do not simply proceed: review the excluded code. Both are reported only when the record shows the two conditions are unrelated.
No → Continue.
ReviewF50.2, R63.0, F50.89, P92, R63.2

Consider F50.020. Then confirm the code is valid for the date of service in the Verify section.

Documentation check

The provider’s diagnostic statement: Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).
Severity: Mild, moderate or severe as the provider states it; severity is not inferred from the clinical picture.

Official instructions as workflow

Excludes1 — check before selecting F50.020(6 notes)
Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with F50.020: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.
CompareF50.2, R63.0, F50.89, P92, R63.2
See the official tabular notes · Guidelines I.A.12.a
Excludes2 — not part of F50.020(2 notes)
Coding workflow: The conditions named in this note are not included in F50.020. When the record documents both, both may be reported; the note is a boundary, not a prohibition.
CompareR63.3, F98.2
See the official tabular notes · Guidelines I.A.12.b

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

Documentation: Both the condition F50.020 describes and a condition named in its Excludes1 note are documented for the same encounter.

Coding question: Can both codes be reported?

Path: Review the Excludes1 note and the excluded code, and look for a provider statement on whether the two conditions are related.

Reason: Excludes1 means the two are not coded together; the exception is when the record shows the conditions are unrelated to each other (Guidelines I.A.12.a).

ReviewF50.2, R63.0, F50.89, P92, R63.2

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Code Overview

Anorexia nervosa, binge eating/purging type, mild is a billable ICD-10-CM diagnosis code (F50.020).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Don’t confuse F50.020 with…

MedCoder analysis — pairs from this code’s official notes, distinctions written by MedCoder

The codes most likely to be picked instead of F50.020 — named in its own official notes, or sharing its laterality or encounter family — with what separates them and which documentation moves the case. Each links to the full comparison.

F50.2— Excludes1 conflict (Excludes1 — generally not reported together)
Not coded here — the tabular list excludes this pair for the same encounter.
Not reported together with this code, except where the two conditions are documented as unrelated.
What moves you there: Documentation of bulimia nervosa moves the case to F50.2; the two are not reported together unless documented as unrelated.
Full comparison: F50.020 vs F50.2 →
R63.0— Excludes1 conflict (Excludes1 — generally not reported together)
Not coded here — the tabular list excludes this pair for the same encounter.
Not reported together with this code, except where the two conditions are documented as unrelated.
What moves you there: Documentation of loss of appetite moves the case to R63.0; the two are not reported together unless documented as unrelated.
Full comparison: F50.020 vs R63.0 →
F50.89— Excludes1 conflict (Excludes1 — generally not reported together)
Not coded here — the tabular list excludes this pair for the same encounter.
Not reported together with this code, except where the two conditions are documented as unrelated.
What moves you there: Documentation of psychogenic loss of appetite moves the case to F50.89; the two are not reported together unless documented as unrelated.
Full comparison: F50.020 vs F50.89 →
P92— Excludes1 conflict (Excludes1 — generally not reported together)
Not coded here — the tabular list excludes this pair for the same encounter.
Not reported together with this code, except where the two conditions are documented as unrelated.
What moves you there: Documentation of feeding problems of newborn moves the case to P92; the two are not reported together unless documented as unrelated.
Full comparison: F50.020 vs P92 →
R63.2— Excludes1 conflict (Excludes1 — generally not reported together)
Not coded here — the tabular list excludes this pair for the same encounter.
Not reported together with this code, except where the two conditions are documented as unrelated.
What moves you there: Documentation of polyphagia moves the case to R63.2; the two are not reported together unless documented as unrelated.
Full comparison: F50.020 vs R63.2 →
F50.029— Specificity relationship (Review)
Overlapping diagnoses in the same category.
Overlapping codes in the same category — the documentation decides which is the more specific fit.
What moves you there: A record that documents no more than “Anorexia nervosa, binge eating/purging type, unspecified” takes F50.029; specificity in the record moves it back here.
Full comparison: F50.020 vs F50.029 →

Relationships are read from this code's own official notes, its laterality siblings and its encounter family; the wording of each distinction is MedCoder editorial, and the documentation named in each “what moves you there” line is the official note phrase or sibling title itself. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

Verify Before Coding

CC as a secondary diagnosis (FY2026). Can raise the stay's MS-DRG severity tier.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

Other codes that name F50.020 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 5 Excludes1 notes across 4 chapters: F50.2 — Bulimia nervosa (via F50.02.-), P92 — Feeding problems of newborn (via F50.-), R63.0 — Anorexia (via F50.0.-), R63.6 — Underweight (via F50.0.-), Z72.4 — Inappropriate diet and eating habits (via F50.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 2 Excludes2 notes across 2 chapters: F98.2 — Other feeding disorders of infancy and childhood (via F50.-), R63.3 — Feeding difficulties (via F50.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

Referenced by 1 Code First instruction: K31.84 — Gastroparesis (via F50.0.-).

Each of these codes carries a Code First note naming this condition — when that code is reported, THIS code is sequenced first, ahead of it.

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: CC — Complication or Comorbidity. Reported as a secondary diagnosis, this code raises the stay's MS-DRG severity tier — except when the principal diagnosis is one of 35 clinically related codes on its CMS exclusion list.

Named in the grouper logic of 1 MS-DRG: DRG 883 (MDC 19).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):MBD010 — Feeding and eating disorders (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical process (MS-DRG)

Acts as CC — raises the severity of other admissions. CMS groups these diagnoses into one MS-DRG principal-diagnosis exclusion process — a CC/MCC on this list never raises severity when the principal diagnosis is also on it.

Same CMS-HCC risk category (V28)

CMS maps these diagnoses to the same Hierarchical Condition Category (Personality Disorders; Anorexia/Bulimia Nervosa) for risk-adjusted payment.

Related risk categories

These categories interact through CMS's HCC hierarchy — one can suppress the other's risk-adjustment weight when both are present on a claim.

Schizophrenia, Psychosis, Except Schizophrenia, Bipolar Disorders without Psychosis, Major Depression, Moderate or Severe, without Psychosis

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Feeding and eating disorders).

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main term “Anorexia”; these codes share that main term but sit in a different category of the Tabular List.

F44.89 — Other dissociative and conversion disorders, R63.0 — Anorexia

Lab tests where this diagnosis supports Medicare coverage (NCD)

Medicare's National Coverage Determination (NCD) program lists this diagnosis as medical justification for these lab tests.

Iron Panel

Contextual Map

Every relationship of F50.020 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run F50.020 with these 8 related codes in Claim Check

Hierarchy

F01-F99 — Chapter 5: Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) (F01-F99)[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
F50-F59 — Behavioral syndromes associated with physiological disturbances and physical factors[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Referenced by Excludes1 notes

F50.2 — Bulimia nervosa[Excludes1](via F50.02.-): “anorexia nervosa, binge eating/purging type (F50.02-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
P92 — Feeding problems of newborn[Excludes1](via F50.-): “eating disorders (F50.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
R63.0 — Anorexia[Excludes1](via F50.0.-): “anorexia nervosa (F50.0-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
R63.6 — Underweight[Excludes1](via F50.0.-): “anorexia nervosa (F50.0-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
Z72.4 — Inappropriate diet and eating habits[Excludes1](via F50.-): “eating disorders (F50.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Excludes2 notes

F98.2 — Other feeding disorders of infancy and childhood[Excludes2](via F50.-): “anorexia nervosa and other eating disorders (F50.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
R63.3 — Feeding difficulties[Excludes2](via F50.-): “eating disorders (F50.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Code First instructions

K31.84 — Gastroparesis[Code First](via F50.0.-): “anorexia nervosa (F50.0-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Clinical classification (CCSR)

MBD010 — Feeding and eating disorders[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)

Risk adjustment (CMS-HCC)

HCC 153 — Personality Disorders; Anorexia/Bulimia Nervosa [CMS-HCC]: “Personality Disorders; Anorexia/Bulimia Nervosa — supersedes HCC 154 (Bipolar Disorders without Psychosis), HCC 155 (Major Depression, Moderate or Severe, without Psychosis)”— CMS-HCC V28 · 2026

MS-DRG Grouper

CC — Complication or Comorbidity [MS-DRG severity]: “As a secondary diagnosis this code can raise the stay's MS-DRG severity tier (CC).”— CMS MS-DRG Definitions Manual (Appendix C) · FY2026
DRG 883 — DISORDERS OF PERSONALITY AND IMPULSE CONTROL[MS-DRG]: “DISORDERS OF PERSONALITY AND IMPULSE CONTROL (MDC 19)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026

MDC crossing

MDC 19 — Mental Diseases and Disorders[MDC crossing]: “Mental Diseases and Disorders — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”— CMS MS-DRG Definitions Manual · FY2026

Nearest codes (36)

F50 — Eating disorders[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
F50.0 — Anorexia nervosa[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
F50.00 — Anorexia nervosa, unspecified[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
F50.01 — Anorexia nervosa, restricting type[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
F50.010 — Anorexia nervosa, restricting type, mild[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
F50.011 — Anorexia nervosa, restricting type, moderate[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
F50.012 — Anorexia nervosa, restricting type, severe[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
F50.013 — Anorexia nervosa, restricting type, extreme[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
and 28 more

Change history

FY2025 — Added to the code set[Change history]— CMS release files (code change ledger) · icd10cm-fy2025

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data: CMS/CDC ICD-10-CM FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page
Claim edits Official source data: CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page
Inpatient payment groups Official source data: CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43 Release, file and checksum · Publisher’s page
Risk adjustment Official source data: 2026 Mid-Year Final ICD-10 Mappings + Model Software (cms.gov/files/zip/2026-midyear-final-icd-10-mappings.zip, 2026-midyear-final-model-software.zip) — CMS-HCC V28, PY2026 mid-year final release Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data: CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder structured relationship: Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder explanation: Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "F50.020 — Anorexia nervosa, binge eating/purging type, mild." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/f50.020-anorexia-nervosa-binge-eatingpurging-type-mild

Change history

FY2025 — October 1, 2024
Added to the code set
Anorexia nervosa, binge eating/purging type, mild
FY2025 changes

Nearest Codes in This Family

Official ICD-10-CM classifications closest to F50.020 in its code family, with their registry titles.

View all codes in the F50 family

F50.020 ICD-10-CM Code: Anorexia nervosa, binge eating/purging type, mild

Coding at a Glance

Inpatient Payment Groups (MS-DRG)

Risk Adjustment (CMS-HCC)

Coding instructions

Inclusion Terms

Excludes1 — Not Coded Here

Excludes2 — Not Included Here

Coder workflow for F50.020

Before you code F50.020

Choose the right path

Documentation check

Official instructions as workflow

Coding decision scenarios

Code Overview

Don’t confuse F50.020 with…

Verify Before Coding

Relationships & Classification

MS-DRG Grouper Relationships (FY2026)

Related Codes

Same clinical process (MS-DRG)

Same CMS-HCC risk category (V28)

Related risk categories

Same clinical category (CCSR)

Same Index main term, other category

Lab tests where this diagnosis supports Medicare coverage (NCD)

Contextual Map

Hierarchy

Referenced by Excludes1 notes

Referenced by Excludes2 notes

Referenced by Code First instructions

Clinical classification (CCSR)

Risk adjustment (CMS-HCC)

MS-DRG Grouper

MDC crossing

Nearest codes (36)

Change history

Sources for this page

Cite this page

Change history

Nearest Codes in This Family