ICD-10-CM Codes
R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
R40-R46 Symptoms and signs involving cognition, perception, emotional state and behavior
R42- Dizziness and giddiness
2021 ICD-10-CM Diagnosis Code R42

2021 ICD-10-CM Diagnosis Code R42

Dizziness and giddiness

2016

2017

2018

2019

2020

2021

Billable/Specific Code

R42 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2021 edition of ICD-10-CM R42 became effective on October 1, 2020.
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
    - H81.01 …… right ear
    - H81.02 …… left ear
    - H81.03 …… bilateral
    - H81.09 …… unspecified ear
  - H81.1 Benign paroxysmal vertigo
    - H81.10 …… unspecified ear
    - H81.11 …… right ear
    - H81.12 …… left ear
    - H81.13 …… bilateral
  - H81.2 Vestibular neuronitis
    - H81.20 …… unspecified ear
    - H81.21 …… right ear
    - H81.22 …… left ear
    - H81.23 …… bilateral
  - H81.3 Other peripheral vertigo
    - H81.31 Aural vertigo
      H81.311 …… right ear
      H81.312 …… left ear
      H81.313 …… bilateral
      H81.319 …… unspecified ear
    - H81.39 Other peripheral vertigo
      H81.391 …… right ear
      H81.392 …… left ear
      H81.393 …… bilateral
      H81.399 …… unspecified ear
  - 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
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
2021 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
2021 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 v38.0):

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
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): 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
Type 1 Excludes
- ataxic gait (R26.0)
- hereditary ataxia (G11.-)
- vertigo NOS (R42)
ICD-10-CM Diagnosis Code T75.23
Vertigo from infrasound
Type 1 Excludes
- vertigo NOS (R42)
ICD-10-CM Diagnosis Code H81
Disorders of vestibular function
Type 1 Excludes
- epidemic vertigo (A88.1)
- vertigo NOS (R42)

Diagnosis Index entries containing back-references to R42:

Disturbance(s) - see also Disease
- equilibrium R42
Dizziness R42
Dysequilibrium R42
Giddiness R42
Light
- headedness R42
Swimming in the head R42
Syndrome - see also Disease
- Mal de Debarquement R42
Vertigo 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.

2021 ICD-10-CM Diagnosis Code R42

Dizziness and giddiness

Vertigo from infrasound

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

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

Other lack of coordination

Vertigo from infrasound

Disorders of vestibular function