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Y90.4 ICD-10-CM Code: Blood alcohol level of 80-99 mg/100 ml

Compare with another code for Y90.4Check this code on a claim

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

Coding at a Glance

Tabular directives
1 code-first instruction

Billable · FY2027A valid, specific ICD-10-CM code, reportable for dates of service in FY2027.

What you need to know

Source: CMS/NCHS Official ICD-10-CM tabular notes, quoted. From the CMS/NCHS tabular list for the release in force. A note the category or block publishes applies to this code too, and is marked with where it comes from.

Code firstfrom Y90Sequence the underlying condition before this code
  • any associated alcohol related disorders (F10)

Where it sits Source: CMS/NCHS

Under:Chapter 20: External Causes of MorbidityY90-Y99 Supplementary factors related to causes of morbidity classified elsewhereY90 Evidence of alcohol involvement determined by blood alcohol level

Most relevant related codes MedCoder-derived

Read off the official notes above and this code’s own position in the tabular list. Which to report is a documentation question; Compare shows the two side by side.

CompareCheck ClaimView Related Codes

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for Y90.4 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2027Effective: October 1, 2026

Trace:FY2027 changesChange historyRelease, file and checksum

Notes without a marker are published on Y90.4 itself; “inherited from” names the category or block whose note applies here.

Code First

Underlying conditions that must be sequenced before this code.

  • any associated alcohol related disorders (F10)

Source: inherited from Y90

Coder workflow for Y90.4

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

Before you code Y90.4

  1. An external cause code is reported in addition to the code for the injury or condition, never as the principal or first-listed diagnosis. Confirm the cause, intent, place of occurrence, activity and status where the record documents them, and assign the 7th character that matches the injury code. External cause coding guidelines (Guidelines I.C.20.a).

Choose the right path

  1. Is the underlying (etiologic) condition the Code First note names documented?
    Yes → Sequence the underlying condition first, then Y90.4.
    No → Continue; do not add an underlying condition the record does not document.

    ReviewF10

Consider Y90.4. 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).
The underlying (etiologic) condition
Named in the Code First note; sequenced before this code when documented (Guidelines I.A.13).

Official instructions as workflow

  • Code First — sequencing check(1 note)

    Coding workflow: Check whether the underlying or etiologic condition the note names is documented. When it is, sequence it before Y90.4. Do not add an underlying condition the record does not document.

    ReviewF10

    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 underlying condition the Code First note names is documented alongside this condition.

Coding question: How are the two sequenced?

Path: Review the Code First note.

Reason: The underlying condition is sequenced first and the manifestation follows (Guidelines I.A.13).

ReviewF10

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.

Coding context

Guidelines, coding notes, decision aids, relationships (with MS-DRG and CCSR classification), hierarchy, HCC, coverage and the context map: what a coder reaches for after the core. Each section names whether it is official source data, a MedCoder-derived relationship or MedCoder editorial.

Code Overview

Blood alcohol level of 80-99 mg/100 ml is a billable ICD-10-CM diagnosis code (Y90.4).

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

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)

5) Blood Alcohol Level A code from category Y90, Evidence of alcohol involvement determined by blood alcohol level, may be assigned when this information is documented and the patient’s provider has documented a condition classifiable to category F10, Alcohol related disorders. The blood alcohol level does not need to be documented by the patient’s provider in order for it to be coded.

Verify Before Coding

  • Principal-diagnosis restriction. External cause of morbidity codes (V, W, X and Y) describe the circumstance that caused an injury, not the condition treated. The Medicare Code Editor rejects them as a principal diagnosis; sequence the injury or condition first and report this code as secondary.

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-derived relationships — computed from published CMS and AHRQ datasets

Other codes that name Y90.4 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 2 Use Additional Code instructions across 2 chapters: F10 — Alcohol related disorders (via Y90.-), R78.0 — Finding of alcohol in blood (via Y90.-).

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

Clinical classification (AHRQ CCSR):EXT028 — External cause codes: evidence of alcohol involvement.

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 category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (External cause codes: evidence of alcohol involvement).

Y90.0 — Blood alcohol level of less than 20 mg/100 ml, Y90.1 — Blood alcohol level of 20-39 mg/100 ml, Y90.2 — Blood alcohol level of 40-59 mg/100 ml, Y90.3 — Blood alcohol level of 60-79 mg/100 ml, Y90.5 — Blood alcohol level of 100-119 mg/100 ml, Y90.6 — Blood alcohol level of 120-199 mg/100 ml, Y90.7 — Blood alcohol level of 200-239 mg/100 ml, Y90.8 — Blood alcohol level of 240 mg/100 ml or more, Y90.9 — Presence of alcohol in blood, level not specified

Contextual Map

Every relationship of Y90.4 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 Y90.4 with these 2 related codes in Claim Check

Hierarchy

Referenced by Use Additional Code instructions

  • F10 — Alcohol related disorders[Use Additional Code](via Y90.-): “code for blood alcohol level, if applicable (Y90.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
  • R78.0 — Finding of alcohol in blood[Use Additional Code](via Y90.-): “external cause code (Y90.-), for detail regarding alcohol level.”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027

Clinical classification (CCSR)

External cause index

  • Blood alcohol level, 80-99mg/100ml[External cause term]— CMS External Cause of Injuries Index · icd10cm-fy2027
  • Factors, supplemental, alcohol, blood level, 80-99mg/100ml[External cause term]— CMS External Cause of Injuries Index · icd10cm-fy2027

Nearest codes (10)

Change history

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

Reference

Index terms and tables, published questions and FAQ, every source behind this page with its release and checksum, the date-of-service check and the complete change history.

Indexed As (2)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Circumstance phrases from the official ICD-10-CM External Cause of Injuries Index that map to this code.

  • Blood alcohol level, 80-99mg/100ml
  • Factors, supplemental, alcohol, blood level, 80-99mg/100ml

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 FY2027 tabular list, index and tables, effective October 1, 2026 Release, file and checksum · Publisher’s page
Coding guidelines Official source data
ICD-10-CM Official Guidelines for Coding and Reporting (FY2027), quoted by section Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v44.0 (October 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-derived 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 editorial 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.

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

Labels on this page: Official source data · MedCoder-derived relationship · MedCoder editorial explanation. How to read the labels · All data sources and release dates · CMS coding rules

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. "Y90.4 — Blood alcohol level of 80-99 mg/100 ml." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/y90.4-blood-alcohol-level-of-80-99-mg100-ml

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Blood alcohol level of 80-99 mg/100 ml

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027, 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 Y90.4 in its code family, with their registry titles.

View all codes in the Y90 family