All ICD10 Codes
R46Non-billable

Symptoms and signs involving appearance and behavior

Symptoms, Signs and Abnormal Clinical and Laboratory Findings·Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46)·category·FY 2026

Use a more specific code (8 billable, 1 non-billable)
R46.0Very low level of personal hygieneR46.1Bizarre personal appearanceR46.2Strange and inexplicable behaviorR46.3OveractivityR46.4Slowness and poor responsivenessR46.5Suspiciousness and marked evasivenessR46.6Undue concern and preoccupation with stressful eventsR46.7Verbosity and circumstantial detail obscuring reason for contactR46.8Other symptoms and signs involving appearance and behaviorhas subcodes

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)

Instructional Notes

Excludes1(Not coded here. Use a different code.)
  • appearance and behavior in schizophrenia, schizotypal and delusional disorders (F20-F29)
  • mental and behavioral disorders (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)
R46Symptoms and signs involving appearance and behaviorNot billable
R46.0Very low level of personal hygieneBillable
R46.1Bizarre personal appearanceBillable
R46.2Strange and inexplicable behaviorBillable
R46.3OveractivityBillable
R46.4Slowness and poor responsivenessBillable
R46.5Suspiciousness and marked evasivenessBillable
R46.6Undue concern and preoccupation with stressful eventsBillable
R46.7Verbosity and circumstantial detail obscuring reason for contactBillable
R46.8Other symptoms and signs involving appearance and behaviorSubcodes

MS-DRG Classification

2026

No direct MS-DRG triggers identified.