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F10.182 vs G47.12

F10.182 (Alcohol abuse with alcohol-induced sleep disorder) compared with G47.12 (Idiopathic hypersomnia without long sleep time), from the official CMS tabular data.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Summary

These codes can be reported together when both conditions are documented, because G47.12 lists F10.182 under Excludes2, which marks them as distinct conditions.

Official rule
What is different?

The conditions named and chapter.F10.182 is “Alcohol abuse with alcohol-induced sleep disorder”; G47.12 is “Idiopathic hypersomnia without long sleep time”. F10.182 sits in F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99); G47.12 in G00-G99 — Diseases of the Nervous System (G00-G99).

Registry fact

Can these codes be reported together?

Yes, when both are documented.G47.12 lists F10.182 under Excludes2: “alcohol-related hypersomnia (F10.182, F10.282, F10.982)”. Excludes2 marks distinct conditions that may both be reported when both are documented.

Official ruleGuide: Excludes1 vs Excludes2

Is there an Excludes1 relationship?

None.Neither entry carries an Excludes1 note that names the other code. F10.182 carries 2 Excludes1 notes covering other codes; the side-by-side table quotes them.

Official rule

Is there an Excludes2 relationship?

Yes.G47.12’s tabular entry: “alcohol-related hypersomnia (F10.182, F10.282, F10.982)”. The note covers F10.182.

Official ruleGuide: Excludes1 vs Excludes2

Is one more specific?

Not comparable.The codes sit in different categories; specificity is only comparable within one category.

Is one a parent or header code?

No.Both are billable codes, and neither contains the other.

Registry fact

Are there sequencing instructions?

None.Neither entry carries a Code First or Use Additional Code note that names the other.

Official rule

Are there other coding relationships?

None found.No laterality, encounter-phase, Table of Neoplasms, Table of Drugs and Chemicals, or history-versus-active-disease relationship links these codes.

MedCoder-derived

Official rule: a tabular instructional note or a section of the ICD-10-CM Official Guidelines, quoted as published. Registry fact: the codes’ own published attributes (titles, billable status, position in the hierarchy, code set). MedCoder-derived: a reading MedCoder computes from those facts; it is not itself a rule. How to read the labels

Can these codes be reported together?

Informational

Excludes2 relationship

G47.12
Idiopathic hypersomnia without long sleep time
↔
F10.182
Alcohol abuse with alcohol-induced sleep disorder

What we found

Yes, when both are documented.G47.12 carries an Excludes2 note covering F10.182: “alcohol-related hypersomnia (F10.182, F10.282, F10.982)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

What to review

Report both only when the documentation supports both conditions; otherwise report the one documented.

Guide: Excludes1 vs Excludes2Check these on a claim

Why it matters

An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.

Source / rule

CMS ICD-10-CM tabular instructional notes

Official guidance behind these answers

  • Section I.A.12.b — Excludes2 · applies to: Excludes2

    A type 2 Excludes note represents “Not included here.” An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

    ICD-10-CM Official Guidelines FY2027

Quoted from the ICD-10-CM Official Guidelines for Coding and Reporting in effect for the release shown. The tabular notes above are the code-level instruction; these sections are the convention that says how such a note is applied. Source document (CMS PDF) · Release and checksum

Side by side

Similar descriptions do not make codes interchangeable. The documentation and the official instructions decide which code applies.

Official descriptionDiffers
F10.182

Alcohol abuse with alcohol-induced sleep disorder

G47.12

Idiopathic hypersomnia without long sleep time

StatusSame for both
Billable
Excludes1Differs
F10.182
  • alcohol dependence (F10.2-)
  • alcohol use, unspecified (F10.9-)
G47.12

None at this code

Excludes2Differs
F10.182

None at this code

G47.12
  • alcohol-related hypersomnia (F10.182, F10.282, F10.982)
  • drug-related hypersomnia (F11.182, F11.282, F11.982, F13.182, F13.282, F13.982, F14.182, F14.282, F14.982, F15.182, F15.282, F15.982, F19.182, F19.282, F19.982)
  • hypersomnia due to a mental disorder (F51.13)
  • hypersomnia not due to a substance or known physiological condition (F51.1-)
  • primary hypersomnia (F51.11)
  • sleep apnea (G47.3-)
  • nightmares (F51.5)
  • nonorganic sleep disorders (F51.-)
  • sleep terrors (F51.4)
  • sleepwalking (F51.3)
Use additional codeDiffers
F10.182
  • code for blood alcohol level, if applicable (Y90.-)
G47.12

None at this code

CategoryDiffers
F10.182

F10 Alcohol related disorders

G47.12

G47 Sleep disorders

ChapterDiffers
F10.182

F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99)

G47.12

G00-G99 — Diseases of the Nervous System (G00-G99)

No Code first, Code also, Includes and 7th character note at either code.

Notes are the code’s own tabular entry, quoted as published. A note that names the other code is the one the verdict above rests on. In a row that differs, notes every code shares are dimmed.

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Derived from the official CMS ICD-10-CM tabular data (FY2027). A coding-rule comparison, not billing advice: payer-specific edits and medical-necessity policy are outside its scope. All data sources