All ICD10 Codes

R40-R46

Non-Billable
ChapterR00–R99
Rankblock
Official Description

Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)

Use a more specific code (1 billable, 6 non-billable)
R40Somnolence, stupor and comahas subcodesR41Other symptoms and signs involving cognitive functions and awarenesshas subcodesR42Dizziness and giddinessR43Disturbances of smell and tastehas subcodesR44Other symptoms and signs involving general sensations and perceptionshas subcodesR45Symptoms and signs involving emotional statehas subcodesR46Symptoms and signs involving appearance and behaviorhas subcodes
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)

Instructional Notes

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)Not billable
R40Somnolence, stupor and comaSubcodes
R41Other symptoms and signs involving cognitive functions and awarenessSubcodes
R42Dizziness and giddinessBillable
R43Disturbances of smell and tasteSubcodes
R44Other symptoms and signs involving general sensations and perceptionsSubcodes
R45Symptoms and signs involving emotional stateSubcodes
R46Symptoms and signs involving appearance and behaviorSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to R40-R46:

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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