2019 ICD-10-CM Diagnosis Code R42

Dizziness and giddiness

    2016 2017 2018 2019 Billable/Specific Code
  • R42 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM R42 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of R42 - other international versions of ICD-10 R42 may differ.
Applicable To
  • Light-headedness
  • Vertigo NOS
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as R42. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • vertiginous syndromes (
    ICD-10-CM Diagnosis Code H81
    • H81 Disorders of vestibular function
      • H81.0 Ménière's disease
      • H81.1 Benign paroxysmal vertigo
      • H81.2 Vestibular neuronitis
      • H81.3 Other peripheral vertigo
      • H81.4 Vertigo of central origin
      • H81.8 Other disorders of vestibular function
        • H81.8X Other disorders of vestibular function
          • H81.8X1 Other disorders of vestibular function, right...
          • H81.8X2 Other disorders of vestibular function, left ...
          • H81.8X3 Other disorders of vestibular function, bilat...
          • H81.8X9 Other disorders of vestibular function, unspe...
      • H81.9 Unspecified disorder of vestibular function
        • H81.90 Unspecified disorder of vestibular function, ...
        • H81.91 Unspecified disorder of vestibular function, ...
        • H81.92 Unspecified disorder of vestibular function, ...
        • H81.93 Unspecified disorder of vestibular function, ...
    H81.-
    )
  • vertigo from infrasound (
    ICD-10-CM Diagnosis Code T75.23

    Vertigo from infrasound

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • vertigo NOS (R42)
    T75.23
    )
The following code(s) above R42 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to R42:
  • R00-R99
    2019 ICD-10-CM Range R00-R99

    Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

    Note
    • This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.
    • Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.
    • The conditions and signs or symptoms included in categories R00-R94 consist of:
    • (a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
    • (b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
    • (c) provisional diagnosis in a patient who failed to return for further investigation or care;
    • (d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
    • (e) cases in which a more precise diagnosis was not available for any other reason;
    • (f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.
    Type 2 Excludes
    • abnormal findings on antenatal screening of mother (O28.-)
    • certain conditions originating in the perinatal period (P04-P96)
    • signs and symptoms classified in the body system chapters
    • signs and symptoms of breast (N63, N64.5)
    Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
  • R40-R46
    2019 ICD-10-CM Range R40-R46

    Symptoms and signs involving cognition, perception, emotional state and behavior

    Type 2 Excludes
    • symptoms and signs constituting part of a pattern of mental disorder (F01-F99)
    Symptoms and signs involving cognition, perception, emotional state and behavior
Approximate Synonyms
  • Chronic vertigo
  • Disembarkment syndrome
  • Dizziness
  • Dysequilibrium
  • Dysequilibrium syndrome
  • Light headedness
  • Lightheadedness
  • Mal dedebarquement syndrome
  • Non-labyrinth vertigo
  • Non-labyrinthine vertigo
  • Vertigo
  • Vertigo (spinning sensation)
  • Vertigo (spinning sensation), chronic
  • Vertigo as late effect of embolic cerebrovascular accident
  • Vertigo as late effect of hemorrhagic cerebrovascular accident
  • Vertigo as late effect of ischemic cerebrovascular accident
  • Vertigo as sequela of cerebrovascular disease
  • Vertigo from stroke
  • Vertigo, late effect of cerebrovascular disease
Clinical Information
  • A disorder characterized by a sensation as if the external world were revolving around the patient (objective vertigo) or as if he himself were revolving in space (subjective 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)
  • Illusory sense that either the environment or one's own body is revolving; may result from disease of the inner ear or disturbances of the vestibular centers or pathways.
  • Vertigo is a feeling of movement, a sensation as if the external world were revolving around the patient (objective vertigo) or as if he himself were revolving in space (subjective vertigo). Vertigo is medically distinct from dizziness, lightheadedness, and unsteadiness.
ICD-10-CM R42 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
  • 149 Dysequilibrium

Convert R42 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
Code annotations containing back-references to R42:
  • Type 1 Excludes: R27
    , T75.23
    , H81
    ICD-10-CM Diagnosis Code R27

    Other lack of coordination

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    ICD-10-CM Diagnosis Code T75.23

    Vertigo from infrasound

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • vertigo NOS (R42)
    ICD-10-CM Diagnosis Code H81

    Disorders of vestibular function

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • epidemic vertigo (A88.1)
    • vertigo NOS (R42)

Diagnosis Index entries containing back-references to R42:

ICD-10-CM Codes Adjacent To R42
R41.82 Altered mental status, unspecified
R41.83 Borderline intellectual functioning
R41.84 Other specified cognitive deficit
R41.840 Attention and concentration deficit
R41.841 Cognitive communication deficit
R41.842 Visuospatial deficit
R41.843 Psychomotor deficit
R41.844 Frontal lobe and executive function deficit
R41.89 Other symptoms and signs involving cognitive functions and awareness
R41.9 Unspecified symptoms and signs involving cognitive functions and awareness
R42 Dizziness and giddiness
R43 Disturbances of smell and taste
R43.0 Anosmia
R43.1 Parosmia
R43.2 Parageusia
R43.8 Other disturbances of smell and taste
R43.9 Unspecified disturbances of smell and taste
R44 Other symptoms and signs involving general sensations and perceptions
R44.0 Auditory hallucinations
R44.1 Visual hallucinations
R44.2 Other hallucinations

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.