R42 – Dizziness and giddiness

ICD-10-CM 2027 diagnosis code · Symptoms and signs involving cognition, perception, emotional state and behavior

Billable code

ICD-10-CM code R42
Code
R42 (claims format: R42)
Description
Dizziness and giddiness
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Block
R40-R46 Symptoms and signs involving cognition, perception, emotional state and behavior

Notes for R42

Applicable to:
  • Light-headedness
  • Vertigo NOS
Excludes1 (not coded here):
  • vertiginous syndromes (H81.-)
  • vertigo from infrasound (T75.23)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block R40-R46

Excludes2 (not included here):
  • symptoms and signs constituting part of a pattern of mental disorder (F01-F99)

Index terms for R42

Entries in the ICD-10-CM alphabetic index that lead to this code:

Frequently asked questions

What is ICD-10 code R42?

R42 is the ICD-10-CM code for dizziness and giddiness, in the block R40-R46 (Symptoms and signs involving cognition, perception, emotional state and behavior).

Is R42 a billable code?

Yes. R42 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.