U.S. ICD-10-CM · FY 2027

Y33 ICD-10-CM Code: Other specified events, undetermined intent

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

Code definition

Official description

Y33

Other specified events, undetermined intent

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

Classification

Where Y33 sits

  1. 1

    Chapter 20

    External causes of morbidity (V00-Y99)

  2. 2

    Section

    Event of undetermined intent (Y21-Y33)

  3. 3

    Category Y33

    Other specified events, undetermined intent

  4. 4

    Code Y33

    Other specified events, undetermined intent

More specific choices

Codes under Y33

Y33 is a non-billable category. Choose the child code that best matches the documented diagnosis.

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for Y33.

Code first

No “code first” instruction is listed for Y33.

Use additional code

No “use additional code” instruction is listed for Y33.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for Y33.

Excludes2

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

No Excludes2 note is listed for Y33.

Transparency

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

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code Y33 mean?

Y33 is the FY 2027 U.S. ICD-10-CM code for “Other specified events, undetermined intent.”

Is Y33 a billable or specific ICD-10-CM code?

No. Y33 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is Y33 located in ICD-10-CM?

Y33 is listed in Chapter 20, External causes of morbidity (V00-Y99), within Event of undetermined intent (Y21-Y33) (Y21–Y33), under category Y33, Other specified events, undetermined intent.

What coding notes are listed for Y33?

No inclusion terms are listed for Y33 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

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