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R42

R42: Dizziness and giddiness

Billable / specific codeICD-10-CM

R42 is a billable, specific ICD-10-CM code for dizziness and giddiness. It is valid for submission on a claim.

Check R42 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

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

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Light-headedness
  • Vertigo NOS

Other codes that can never be billed with R42

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • H81Disorders of vestibular function
  • R27Other lack of coordination
  • T75.23XAVertigo from infrasound, initial encounter
  • T75.23XDVertigo from infrasound, subsequent encounter
  • T75.23XSVertigo from infrasound, sequela
  • T75.23Vertigo from infrasound

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

R42 is named in 26 Medicare coverage policies: 26 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A53057Billing and Coding: Home Health Occupational Therapy
  • A53058Billing and Coding: Home Health Physical Therapy
  • A53064Billing and Coding: Outpatient Occupational Therapy
  • A53065Billing and Coding: Outpatient Physical Therapy

Alphabetic index entries that lead here

  • Dizziness
  • Dysequilibrium
  • Giddiness
  • Swimming in the head
  • Vertigo
  • Disturbance›equilibrium
  • Light›headedness
  • Syndrome›Mal de Debarquement

Code history

Unchanged in every release from FY2024 to FY2027.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.