R42 ICD-10-CM Code: Dizziness and giddiness
R42 is the billable ICD-10-CM code for “Dizziness and giddiness” in the FY 2027 U.S. code set, effective Oct 1, 2026.
Official description
R42Dizziness and giddiness
ICD-10-CM diagnosis code · United States clinical modification
Where R42 sits
- 1
Chapter 18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
- 2
Section
Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)
- 3
Category R42
Dizziness and giddiness
- 4
Code R42
Dizziness and giddiness
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.
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.
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.