All ICD10 Codes

R43

Non-Billable
ChapterR00–R99
Rankcategory
Official Description

Disturbances of smell and taste

Use a more specific code (5 billable)
R43.0AnosmiaR43.1ParosmiaR43.2ParageusiaR43.8Other disturbances of smell and tasteR43.9Unspecified disturbances of smell and taste
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (R00-R99).

CH18 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • 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)

R40-R46 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • symptoms and signs constituting part of a pattern of mental disorder (F01-F99)

Clinical Hierarchy

BillableHas subcodes
CH18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
R40-R46Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)
R43Disturbances of smell and tasteNot billable
R43.0AnosmiaBillable
R43.1ParosmiaBillable
R43.2ParageusiaBillable
R43.8Other disturbances of smell and tasteBillable
R43.9Unspecified disturbances of smell and tasteBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to R43:

blockR40-R46
Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)
View context instructions
chapterCH18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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