All ICD10 Codes
Chapter 18

R00–R99: Symptoms, Signs and Abnormal Clinical and Laboratory Findings

Symptoms, Signs and Abnormal Clinical and Laboratory Findings diagnostic classification updated for 2026.

Chapter 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)
All CodesBillable Only
Internal Codes
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  • R40.211—

    Coma scale, eyes open, never

  • R40.2110—

    Coma scale, eyes open, never, unspecified time

  • R40.2111—

    Coma scale, eyes open, never, in the field [EMT or ambulance]

  • R40.2112—

    Coma scale, eyes open, never, at arrival to emergency department

  • R40.2113—

    Coma scale, eyes open, never, at hospital admission

  • R40.2114—

    Coma scale, eyes open, never, 24 hours or more after hospital admission

  • R40.212—

    Coma scale, eyes open, to pain

  • R40.2120—

    Coma scale, eyes open, to pain, unspecified time

  • R40.2121—

    Coma scale, eyes open, to pain, in the field [EMT or ambulance]

  • R40.2122—

    Coma scale, eyes open, to pain, at arrival to emergency department

  • R40.2123—

    Coma scale, eyes open, to pain, at hospital admission

  • R40.2124—

    Coma scale, eyes open, to pain, 24 hours or more after hospital admission

  • R40.213—

    Coma scale, eyes open, to sound

  • R40.2130—

    Coma scale, eyes open, to sound, unspecified time

  • R40.2131—

    Coma scale, eyes open, to sound, in the field [EMT or ambulance]

  • R40.2132—

    Coma scale, eyes open, to sound, at arrival to emergency department

  • R40.2133—

    Coma scale, eyes open, to sound, at hospital admission

  • R40.2134—

    Coma scale, eyes open, to sound, 24 hours or more after hospital admission

  • R40.214—

    Coma scale, eyes open, spontaneous

  • R40.2140—

    Coma scale, eyes open, spontaneous, unspecified time

  • R40.2141—

    Coma scale, eyes open, spontaneous, in the field [EMT or ambulance]

  • R40.2142—

    Coma scale, eyes open, spontaneous, at arrival to emergency department

  • R40.2143—

    Coma scale, eyes open, spontaneous, at hospital admission

  • R40.2144—

    Coma scale, eyes open, spontaneous, 24 hours or more after hospital admission

  • R40.221—

    Coma scale, best verbal response, none

  • R40.2210—

    Coma scale, best verbal response, none, unspecified time

  • R40.2211—

    Coma scale, best verbal response, none, in the field [EMT or ambulance]

  • R40.2212—

    Coma scale, best verbal response, none, at arrival to emergency department

  • R40.2213—

    Coma scale, best verbal response, none, at hospital admission

  • R40.2214—

    Coma scale, best verbal response, none, 24 hours or more after hospital admission

  • R40.222—

    Coma scale, best verbal response, incomprehensible words

  • R40.2220—

    Coma scale, best verbal response, incomprehensible words, unspecified time

  • R40.2221—

    Coma scale, best verbal response, incomprehensible words, in the field [EMT or ambulance]

  • R40.2222—

    Coma scale, best verbal response, incomprehensible words, at arrival to emergency department

  • R40.2223—

    Coma scale, best verbal response, incomprehensible words, at hospital admission

  • R40.2224—

    Coma scale, best verbal response, incomprehensible words, 24 hours or more after hospital admission

  • R40.223—

    Coma scale, best verbal response, inappropriate words

  • R40.2230—

    Coma scale, best verbal response, inappropriate words, unspecified time

  • R40.2231—

    Coma scale, best verbal response, inappropriate words, in the field [EMT or ambulance]

  • R40.2232—

    Coma scale, best verbal response, inappropriate words, at arrival to emergency department

  • R40.2233—

    Coma scale, best verbal response, inappropriate words, at hospital admission

  • R40.2234—

    Coma scale, best verbal response, inappropriate words, 24 hours or more after hospital admission

  • R40.224—

    Coma scale, best verbal response, confused conversation

  • R40.2240—

    Coma scale, best verbal response, confused conversation, unspecified time

  • R40.2241—

    Coma scale, best verbal response, confused conversation, in the field [EMT or ambulance]

  • R40.2242—

    Coma scale, best verbal response, confused conversation, at arrival to emergency department

  • R40.2243—

    Coma scale, best verbal response, confused conversation, at hospital admission

  • R40.2244—

    Coma scale, best verbal response, confused conversation, 24 hours or more after hospital admission

  • R40.225—

    Coma scale, best verbal response, oriented

  • R40.2250—

    Coma scale, best verbal response, oriented, unspecified time

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