All ICD10 Codes

R46

Non-Billable
ChapterR00–R99
Rankcategory
Official Description

Symptoms and signs involving appearance and behavior

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)

R40-R46 Parent Instructions

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

Instructional Notes

Excludes1(Not coded here)
  • appearance and behavior in schizophrenia, schizotypal and delusional disorders (F20-F29)
  • mental and behavioral disorders (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)
R46Symptoms and signs involving appearance and behavior
R46.0Very low level of personal hygiene
R46.1Bizarre personal appearance
R46.2Strange and inexplicable behavior
R46.3Overactivity
R46.4Slowness and poor responsiveness
R46.5Suspiciousness and marked evasiveness
R46.6Undue concern and preoccupation with stressful events
R46.7Verbosity and circumstantial detail obscuring reason for contact
R46.8Other symptoms and signs involving appearance and behavior

Applicable Ancestor Context

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

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

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to R46. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

18 raw paths
Appearance3 unique routes
bizarre→R46
specified NEC→R46
very low level of personal hygiene→R46
Behavior11 unique routes
inexplicable→R46
marked evasiveness→R46
obsessive-compulsive→R46
overactivity→R46
poor responsiveness→R46
slowness→R46
specified NEC→R46
strange (and inexplicable)→R46
suspiciousness→R46
undue concern or preoccupation with stressful events→R46
verbosity and circumstantial detail obscuring reason for contact→R46
Overactivity1 unique routes
Direct index entry→R46
Poor1 unique routes
personal hygiene→R46
Symptoms NEC2 unique routes
involving(2 variants)
appearance NEC→R46
behavior NEC→R46

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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