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V00-V99 vs W31

V00-V99 (Transport accidents (V00-V99)) compared with W31 (Contact with other and unspecified machinery), 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 20, 2026 · All releases and sources

Summary

These codes should not be reported together because V00-V99’s tabular entry lists W31 under Excludes1.

Official rule
What is different?

The conditions named.V00-V99 is “Transport accidents (V00-V99)”; W31 is “Contact with other and unspecified machinery”.

Registry fact

Can these codes be reported together?

No.V00-V99’s entry carries an Excludes1 note covering W31: “agricultural vehicles in stationary use or maintenance (W31.-)”. Both may be reported only when the documentation shows the two conditions are unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Official ruleGuide: Excludes1 vs Excludes2

Is there an Excludes1 relationship?

Yes.V00-V99’s tabular entry: “agricultural vehicles in stationary use or maintenance (W31.-)”. The note covers W31.

Official ruleGuide: Excludes1 vs Excludes2

Is there an Excludes2 relationship?

None.Neither entry carries an Excludes2 note that names the other code. V00-V99 carries 1 Excludes2 note covering other codes; the side-by-side table quotes them.

Official rule

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?

Both are headers.Both are non-billable headers, 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?

Excludes1 — generally not reported together

Excludes1 conflict

V00-V99
Transport accidents (V00-V99)
↔
W31
Contact with other and unspecified machinery

What we found

No — do not report together.V00-V99 carries an Excludes1 note covering W31: “agricultural vehicles in stationary use or maintenance (W31.-)”

Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

What to review

Report one of the two. Both may be reported only when the documentation shows the two conditions are unrelated to each other.

Guide: Excludes1 vs Excludes2Check these on a claim

Why it matters

An Excludes1 note means the two conditions are not ordinarily reported together for the same encounter, because the classification treats them as mutually exclusive forms of the same condition. The documented exception is when the two conditions are unrelated to each other.

Source / rule

CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a

Official guidance behind these answers

  • Section I.A.12.a — Excludes1 · applies to: Excludes1

    A type 1 Excludes note is a pure excludes note. It means “NOT CODED HERE!” An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition. An exception to the Excludes1 definition is the circumstance when the two conditions are unrelated to each other. If it is not clear whether the two conditions involving an Excludes1 note are related or not, query the provider. For example, code F45.8, Other somatoform disorders, has an Excludes1 note for "sleep related teeth grinding (G47.63)," because "teeth grinding" is an inclusion term under F45.8. Only one of these two codes should be assigned for teeth grinding. However psychogenic dysmenorrhea is also an inclusion term under F45.8, and a patient could have both this condition and sleep related teeth grinding. In this case, the two conditions are clearly unrelated to each other, and so it would be appropriate to report F45.8 and G47.63 together.

    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

V00-V99Transport accidents (V00-V99)W31Contact with other and unspecified machinery
Billing statusNon-billable headerNon-billable header

Report instead: W31.0XXA, W31.0XXD, W31.0XXS, W31.1XXA, W31.1XXD

ClassificationV00-Y99 — External Causes of Morbidity (V00-Y99)V00-Y99 — External Causes of Morbidity (V00-Y99)
DefinitionTransport accidents (V00-V99) is a non-billable ICD-10-CM category code (V00-V99).Contact with other and unspecified machinery is a non-billable ICD-10-CM category code (W31).
7th character—The appropriate 7th character is to be added to each code from category W31
Excludes1
agricultural vehicles in stationary use or maintenance (W31.-)
assault by crashing of motor vehicle (Y03.-)
automobile or motor cycle in stationary use or maintenance- code to type of accident
crashing of motor vehicle, undetermined intent (Y32)
intentional self-harm by crashing of motor vehicle (X82)
contact with agricultural machinery (W30.-)
contact with machinery in transport under own power or being towed by a vehicle (V01-V99)
exposure to electric current (W86)
assault (X92-Y09)
contact or collision with animals or persons (W50-W64)
exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)
intentional self-harm (X71-X83)
Excludes2
transport accidents due to cataclysm (X34-X38)
—
Use additional code
code to identify:
Airbag injury (W22.1)
Type of street or road (Y92.4-)
—

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.

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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