U.S. ICD-10-CM · FY 2027

R42 ICD-10-CM Code: Dizziness and giddiness

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

Code definition

Official description

R42

Dizziness and giddiness

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

Classification

Where R42 sits

  1. 1

    Chapter 18

    Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

  2. 2

    Section

    Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)

  3. 3

    Category R42

    Dizziness and giddiness

  4. 4

    Code R42

    Dizziness and giddiness

Documentation details

Notes for this code

Inclusion terms

  • Light-headedness
  • Vertigo NOS

Code first

No “code first” instruction is listed for R42.

Use additional code

No “use additional code” instruction is listed for R42.

Excludes1

Conditions that should not be reported together with this code.

  • vertiginous syndromes (H81.-)
  • vertigo from infrasound (T75.23)

Excludes2

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

No Excludes2 note is listed for R42.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

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 R42 mean?

R42 is the FY 2027 U.S. ICD-10-CM code for “Dizziness and giddiness.”

Is R42 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, R42 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 R42 located in ICD-10-CM?

R42 is listed in Chapter 18, Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), within Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46) (R40–R46), under category R42, Dizziness and giddiness.

What coding notes are listed for R42?

Its listed inclusion terms are Light-headedness; Vertigo NOS. No code-first instruction is listed. Excludes1 notes: vertiginous syndromes (H81.-); vertigo from infrasound (T75.23). No Excludes2 note is listed.

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