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Y09 ICD-10-CM Code: Assault by unspecified means

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Official description

Y09

Assault by unspecified means

ICD-10-CM diagnosis code · United States clinical modification

Where Y09 sits

  1. 1

    Chapter 20

    External causes of morbidity (V00-Y99)

  2. 2

    Section

    Assault (X92-Y09)

  3. 3

    Category Y09

    Assault by unspecified means

  4. 4

    Code Y09

    Assault by unspecified means

Notes for this code

Inclusion terms

  • Assassination (attempted) NOS
  • Homicide (attempted) NOS
  • Manslaughter (attempted) NOS
  • Murder (attempted) NOS

Code first

No “code first” instruction is listed for Y09.

Use additional code

No “use additional code” instruction is listed for Y09.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for Y09.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for Y09.

Source and release

Data release
U.S. ICD-10-CM · FY 2027
Effective date
Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Frequently asked questions

What does ICD-10-CM code Y09 mean?

Y09 is the FY 2027 U.S. ICD-10-CM code for “Assault by unspecified means.”

Is Y09 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, Y09 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is Y09 located in ICD-10-CM?

Y09 is listed in Chapter 20, External causes of morbidity (V00-Y99), within Assault (X92-Y09) (X92–Y09), under category Y09, Assault by unspecified means.

What coding notes are listed for Y09?

Its listed inclusion terms are Assassination (attempted) NOS; Homicide (attempted) NOS; Manslaughter (attempted) NOS; Murder (attempted) NOS. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.