Dizziness and giddiness (R42) ICD-10-CM
The R42 code range covers dizziness and giddiness with 1 ICD-10-CM diagnosis codes. 1 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Light-headedness
- Vertigo NOS
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the R42 Range 1 codes · 1 billable
- R42 Dizziness and giddiness
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the R42 range.
Dizziness
An imprecise term which may refer to a sense of spatial disorientation, motion of the environment, or lightheadedness.
Vertigo
An illusion of movement, either of the external world revolving around the individual or of the individual revolving in space. Vertigo may be associated with disorders of the inner ear (EAR, INNER); VESTIBULAR NERVE; BRAINSTEM; or CEREBRAL CORTEX. Lesions in the TEMPORAL LOBE and PARIETAL LOBE may be associated with FOCAL SEIZURES that may feature vertigo as an ictal manifestation. (From Adams et al., Principles of Neurology, 6th ed, pp300-1)
About the R42 Code Range
Dizziness may mean feeling disoriented, lightheaded, or as if the surroundings are moving. Vertigo is the false sensation that you or your surroundings are revolving.
Within symptoms, signs, and abnormal findings, this category sits in a group involving cognition, perception, emotional state, and behavior. R42 groups dizziness and giddiness without further subdivisions.
Questions About This Page
How many billable codes are in the R42 range?
Of the 1 codes in this range, 1 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the R42 range classify?
The range classifies dizziness and giddiness. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
