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F10.9 ICD-10-CM Code: Alcohol use, unspecified

Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.

Coding at a Glance

Tabular directives
2 Excludes1 · 1 use-additional code

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for F10.9 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 F10.9 itself; “inherited from” names the category or block whose note applies here.

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).

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code for blood alcohol level, if applicable (Y90.-)

Source: inherited from F10

Coder workflow for F10.9

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

Before you code F10.9

  1. F10.9 is not reportable as written. Select the more specific code beneath it that the documentation supports. Codes are reported to the highest level of specificity the classification provides (Guidelines I.B.2).

    ReviewF10.90, F10.91, F10.92, F10.93, F10.94, F10.95, F10.96, F10.97, F10.98

    See the relationships section · Guide: How to choose an ICD-10-CM code →

  2. Unspecified does not mean incorrect. When the record gives no greater specificity, F10.9 may be the appropriate code. Check the record for detail that supports a more specific sibling. An unspecified code is for records that do not provide the detail a more specific code needs; a query, not an assumption, is the route to specificity (Guidelines I.A.9.b, I.B.18).

    See the relationships section · Guide: Other vs unspecified (NEC vs NOS) →

  3. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with F10.9. 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

  1. Does the documentation support one of the more specific codes beneath F10.9?
    Yes → Select that code and continue the checks below on its own page.
    No → F10.9 cannot be reported as written; query for the specificity its subcategory needs.

    ReviewF10.90, F10.91, F10.92, F10.93, F10.94, F10.95, F10.96, F10.97, F10.98

  2. Does the record document the detail a more specific sibling code needs?
    Yes → Review the specific siblings in this subcategory.
    No → Continue — F10.9 is appropriate when the documentation goes no further.
  3. Does the documentation support a condition named in F10.9’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.

    ReviewF10.1, F10.2

Consider F10.9. Then work the Use Additional Code note, and 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).
The conditions the Use Additional Code note names
Reported with this code when documented; a conditional instruction (“if applicable”, “if known”) applies only when the record supports it.
Any detail beyond this code’s title
What the record states that a more specific sibling code would capture — or its absence, which itself supports the unspecified code.

Official instructions as workflow

  • Excludes1 — check before selecting F10.9(2 notes)

    Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with F10.9: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

    CompareF10.1, F10.2

    See the official tabular notes · Guidelines I.A.12.a

  • Use Additional Code — after identifying F10.9(1 note)

    Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with F10.9 when it does. Where the instruction is conditional (“if applicable”, “if known”), it applies only when the record documents the condition.

    ReviewY90

    See the official tabular notes · Guidelines I.A.13

Coding decision scenarios

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

Documentation: The provider documents the condition in the terms of this code’s title and records no further detail.

Coding question: Is a more specific sibling code supportable?

Path: Review the subcategory for a sibling that names the missing detail.

Reason: A more specific code needs documentation of the distinguishing element; without it the unspecified code is appropriate, and a provider query is the route to specificity (Guidelines I.A.9.b, I.B.18).

Documentation: Both the condition F10.9 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).

ReviewF10.1, F10.2

Documentation: A condition the Use Additional Code note names is documented.

Coding question: Is a second code reported with F10.9?

Path: Review the Use Additional Code note and the code it names.

Reason: The additional code is reported when the record documents the condition; a conditional instruction applies only when its condition is met (Guidelines I.A.13).

ReviewY90

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

Alcohol use, unspecified is a non-billable ICD-10-CM category code (F10.9). A more specific billable subcode must be selected for claims submission.

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

Official Coding Guidelines

Official source data — quoted verbatim from the CMS/NCHS Official Guidelines

Official source data — quoted verbatim from the CMS/NCHS Official Guidelines

Verbatim excerpts from the ICD-10-CM Official Guidelines for Coding and Reporting (CMS/NCHS) that govern this code.

Chapter 5: Mental, Behavioral and Neurodevelopmental disorders (F01 – F99)

3) Psychoactive Substance Use, Unspecified As with all other unspecified diagnoses, the codes for unspecified psychoactive substance use (F10.9-, F11.9-, F12.9-, F13.9-, F14.9-, F15.9-, F16.9-, F18.9-, F19.9-) should only be assigned based on provider documentation and when they meet the definition of a reportable diagnosis (see Section III, Reporting Additional Diagnoses). These codes are to be used only when the psychoactive substance use is associated with a substance related disorder (chapter 5 disorders such as sexual dysfunction, sleep disorder, or a mental or behavioral disorder) or medical condition, and such a relationship is documented by the provider.

Verify Before Coding

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 F10.9 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 3 Excludes1 notes across 2 chapters: F10.1 — Alcohol abuse, F10.2 — Alcohol dependence, R41.3 — Other amnesia (via F10.-).

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

Referenced by 31 Excludes2 notes across 3 chapters: F02 — Dementia in other diseases classified elsewhere (via F10.-), F06 — Other mental disorders due to known physiological condition (via F10.-), F06.0 — Psychotic disorder with hallucinations due to known physiological condition (via F10.-), F06.2 — Psychotic disorder with delusions due to known physiological condition (via F10.-), F06.3 — Mood disorder due to known physiological condition (via F10.-), F06.4 — Anxiety disorder due to known physiological condition (via F10.-), F55 — Abuse of non-psychoactive substances (via F10.-), F63 — Impulse disorders (via F10.-), F63.1 — Pyromania (via F10.-), R78 — Findings of drugs and other substances, not normally found in blood (via F10.-), T36 — Poisoning by, adverse effect of and underdosing of systemic antibiotics (via F10.-), T36-T39 — Antibiotics & Anti-infectives (T36-T39) (via F10.-), T36-T50 — Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50) (via F10.-), T37 — Poisoning by, adverse effect of and underdosing of other systemic anti-infectives and antiparasitics (via F10.-), T38 — Poisoning by, adverse effect of and underdosing of hormones and their synthetic substitutes and antagonists, not elsewhere classified (via F10.-), T39 — Poisoning by, adverse effect of and underdosing of nonopioid analgesics, antipyretics and antirheumatics (via F10.-), T40 — Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens] (via F10.-), T40-T41 — Analgesics & Antipyretics (T40-T41) (via F10.-), T41 — Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases (via F10.-), T42 — Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs (via F10.-), +11 more.

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

Referenced by 46 Use Additional Code instructions across 5 chapters: C00 — Malignant neoplasm of lip (via F10.-), C01 — Malignant neoplasm of base of tongue (via F10.-), C02 — Malignant neoplasm of other and unspecified parts of tongue (via F10.-), C03 — Malignant neoplasm of gum (via F10.-), C04 — Malignant neoplasm of floor of mouth (via F10.-), C05 — Malignant neoplasm of palate (via F10.-), C06 — Malignant neoplasm of other and unspecified parts of mouth (via F10.-), C07 — Malignant neoplasm of parotid gland (via F10.-), C08 — Malignant neoplasm of other and unspecified major salivary glands (via F10.-), C09 — Malignant neoplasm of tonsil (via F10.-), C10 — Malignant neoplasm of oropharynx (via F10.-), C14 — Malignant neoplasm of other and ill-defined sites in the lip, oral cavity and pharynx (via F10.-), C15 — Malignant neoplasm of esophagus (via F10.-), C16 — Malignant neoplasm of stomach (via F10.-), C22 — Malignant neoplasm of liver and intrahepatic bile ducts (via F10.-), C25 — Malignant neoplasm of pancreas (via F10.-), C32 — Malignant neoplasm of larynx (via F10.-), G31.84 — Mild cognitive impairment of uncertain or unknown etiology (via F10.-), G72.1 — Alcoholic myopathy (via F10.-), I60 — Nontraumatic subarachnoid hemorrhage (via F10.-), +26 more.

These codes instruct coders to additionally report this code when it applies.

Referenced by 2 Code Also instructions across 2 chapters: G31.2 — Degeneration of nervous system due to alcohol (via F10.-), I42.6 — Alcoholic cardiomyopathy (via F10.-).

These codes suggest coding this condition alongside when both are present.

Related Codes

Same Index main term, other category

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

F04 — Amnestic disorder due to known physiological condition

Contextual Map

Every relationship of F10.9 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 F10.9 with these 21 related codes in Claim Check

Hierarchy

Excludes1

  • F10.1 — Alcohol abuse[Excludes1]: “alcohol abuse (F10.1-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • F10.2 — Alcohol dependence[Excludes1]: “alcohol dependence (F10.2-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Excludes1 notes

  • F10.1 — Alcohol abuse[Excludes1]: “alcohol use, unspecified (F10.9-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • F10.2 — Alcohol dependence[Excludes1]: “alcohol use, unspecified (F10.9-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • R41.3 — Other amnesia[Excludes1](via F10.-): “amnestic syndrome due to psychoactive substance use (F10-F19 with 5th character .6)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Excludes2 notes (31)

Referenced by Use Additional Code instructions (46)

Referenced by Code Also instructions

Nearest codes (40)

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Common coding questions

Can F10.9 be billed directly?

No. F10.9 (Alcohol use, unspecified) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.

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
Coding guidelines Official source data
ICD-10-CM Official Guidelines for Coding and Reporting (FY2026), quoted by section 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
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. "F10.9 — Alcohol use, unspecified." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/f10.9-alcohol-use-unspecified

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Alcohol use, unspecified

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027 (effective October 1, 2026), and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to F10.9 in its code family, with their registry titles.

View all codes in the F10 family