2023

  1. ICD-10-CM Codes
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  2. R00-R99
    3. ›
  3. R40-R46
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  4. R43-
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  5. 2023 ICD-10-CM Diagnosis Code R43.0

2023 ICD-10-CM Diagnosis Code R43.0

Anosmia

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • R43.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2023 edition of ICD-10-CM R43.0 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of R43.0 - other international versions of ICD-10 R43.0 may differ.
The following code(s) above R43.0 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 R43.0:
  • R00-R99
    2023 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
    2023 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
  • Anosmia (loss of sense of smell)
  • Loss of sense of smell
  • Traumatic anosmia
Clinical Information
  • Absence of the sense of smell.
  • Absence of the sense of smell. (Dorland, 27th ed)
  • Loss of the sense of smell.
ICD-10-CM R43.0 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 091 Other disorders of nervous system with mcc
  • 092 Other disorders of nervous system with cc
  • 093 Other disorders of nervous system without cc/mcc

Convert R43.0 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
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change

Diagnosis Index entries containing back-references to R43.0:
  • Anosmia R43.0
  • Disturbance(s) - see also Disease
    • sensation (cold) (heat) (localization) (tactile discrimination) (texture) (vibratory) R20.9
      ICD-10-CM Diagnosis Code R20.9

      Unspecified disturbances of skin sensation

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
      • smell R43.9
        ICD-10-CM Diagnosis Code R43.9

        Unspecified disturbances of smell and taste

          2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
        • anosmia R43.0

ICD-10-CM Codes Adjacent To R43.0
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
R44.3 Hallucinations, unspecified
R44.8 Other symptoms and signs involving general sensations and perceptions

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

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