Disturbances of smell and taste (R43) ICD-10-CM
The R43 code range covers disturbances of smell and taste with 6 ICD-10-CM diagnosis codes. 5 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Codes in the R43 Range 6 codes · 5 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the R43 range.
Ageusia
Complete or severe loss of the subjective sense of taste, frequently accompanied by OLFACTION DISORDERS.
Anosmia
Complete or severe loss of the subjective sense of smell. Loss of smell may be caused by many factors such as a cold, allergy, OLFACTORY NERVE DISEASES, viral RESPIRATORY TRACT INFECTIONS (e.g., COVID-19), aging and various neurological disorders (e.g., ALZHEIMER DISEASE).
Dysgeusia
A condition characterized by alterations of the sense of taste which may range from mild to severe, including gross distortions of taste quality.
Parosmia
An olfactory disturbance where the sense of smell inaccurately conveys disagreeable sensations.
About the R43 Code Range
Smell and taste disturbances appear here as symptoms involving perception. They can include loss of taste, an unpleasant taste in the mouth, or a phantom taste.
R43.0, R43.1, and R43.2 identify named disturbances. R43.8 covers other disturbances, while R43.9 covers unspecified disturbances.
Questions About This Page
How many billable codes are in the R43 range?
Of the 6 codes in this range, 5 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 R43 range classify?
The range classifies disturbances of smell and taste. 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.
