ICD-10-CM 2027 diagnosis code

R43Disturbances of smell and taste

Not billable — use a more specific code

R43 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About R43

R43 is the ICD-10-CM diagnosis code for disturbances of smell and taste. It belongs to block R40-R46 (symptoms and signs involving cognition, perception, emotional state and behavior) and chapter 18 (symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: R43.0 (Anosmia), R43.1 (Parosmia), R43.2 (Parageusia), R43.8 (taste) and R43.9 (taste).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under R43

Notes that apply from higher levels

Instructions written at a parent level also apply to R43.

Broader instructions also apply from R40-R46 Symptoms and signs involving cognition, perception, emotional state and behavior and Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.

Code history

2016
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2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about R43

Is R43 billable?: No. R43 is a header code. Report one of its more specific subcodes instead.