R40-R46

Non-Billable
ChapterR00–R99
Rankblock
Official Description

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

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •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)
  • 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)
  • symptoms and signs constituting part of a pattern of mental disorder (F01-F99)

Clinical Hierarchy

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)
R40Somnolence, stupor and coma
R41Other symptoms and signs involving cognitive functions and awareness
R42Dizziness and giddiness
R43Disturbances of smell and taste
R44Other symptoms and signs involving general sensations and perceptions
R45Symptoms and signs involving emotional state
R46Symptoms and signs involving appearance and behavior

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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