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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  • R40.2344—

    Coma scale, best motor response, flexion withdrawal, 24 hours or more after hospital admission

  • R40.235—

    Coma scale, best motor response, localizes pain

  • R40.2350—

    Coma scale, best motor response, localizes pain, unspecified time

  • R40.2351—

    Coma scale, best motor response, localizes pain, in the field [EMT or ambulance]

  • R40.2352—

    Coma scale, best motor response, localizes pain, at arrival to emergency department

  • R40.2353—

    Coma scale, best motor response, localizes pain, at hospital admission

  • R40.2354—

    Coma scale, best motor response, localizes pain, 24 hours or more after hospital admission

  • R40.236—

    Coma scale, best motor response, obeys commands

  • R40.2360—

    Coma scale, best motor response, obeys commands, unspecified time

  • R40.2361—

    Coma scale, best motor response, obeys commands, in the field [EMT or ambulance]

  • R40.2362—

    Coma scale, best motor response, obeys commands, at arrival to emergency department

  • R40.2363—

    Coma scale, best motor response, obeys commands, at hospital admission

  • R40.2364—

    Coma scale, best motor response, obeys commands, 24 hours or more after hospital admission

  • R40.24—

    Glasgow coma scale, total score

  • R40.241—

    Glasgow coma scale score 13-15

  • R40.2410—

    Glasgow coma scale score 13-15, unspecified time

  • R40.2411—

    Glasgow coma scale score 13-15, in the field [EMT or ambulance]

  • R40.2412—

    Glasgow coma scale score 13-15, at arrival to emergency department

  • R40.2413—

    Glasgow coma scale score 13-15, at hospital admission

  • R40.2414—

    Glasgow coma scale score 13-15, 24 hours or more after hospital admission

  • R40.242—

    Glasgow coma scale score 9-12

  • R40.2420—

    Glasgow coma scale score 9-12, unspecified time

  • R40.2421—

    Glasgow coma scale score 9-12, in the field [EMT or ambulance]

  • R40.2422—

    Glasgow coma scale score 9-12, at arrival to emergency department

  • R40.2423—

    Glasgow coma scale score 9-12, at hospital admission

  • R40.2424—

    Glasgow coma scale score 9-12, 24 hours or more after hospital admission

  • R40.243—

    Glasgow coma scale score 3-8

  • R40.2430—

    Glasgow coma scale score 3-8, unspecified time

  • R40.2431—

    Glasgow coma scale score 3-8, in the field [EMT or ambulance]

  • R40.2432—

    Glasgow coma scale score 3-8, at arrival to emergency department

  • R40.2433—

    Glasgow coma scale score 3-8, at hospital admission

  • R40.2434—

    Glasgow coma scale score 3-8, 24 hours or more after hospital admission

  • R40.244—

    Other coma, without documented Glasgow coma scale score, or with partial score reported

  • R40.2440—

    Other coma, without documented Glasgow coma scale score, or with partial score reported, unspecified time

  • R40.2441—

    Other coma, without documented Glasgow coma scale score, or with partial score reported, in the field [EMT or ambulance]

  • R40.2442—

    Other coma, without documented Glasgow coma scale score, or with partial score reported, at arrival to emergency department

  • R40.2443—

    Other coma, without documented Glasgow coma scale score, or with partial score reported, at hospital admission

  • R40.2444—

    Other coma, without documented Glasgow coma scale score, or with partial score reported, 24 hours or more after hospital admission

  • R40.2A—

    Nontraumatic coma due to underlying condition

  • R40.3—

    Persistent vegetative state

  • R40.4—

    Transient alteration of awareness

  • R41—

    Other symptoms and signs involving cognitive functions and awareness

  • R41.0—

    Disorientation, unspecified

  • R41.1—

    Anterograde amnesia

  • R41.2—

    Retrograde amnesia

  • R41.3—

    Other amnesia

  • R41.4—

    Neurologic neglect syndrome

  • R41.8—

    Other symptoms and signs involving cognitive functions and awareness

  • R41.81—

    Age-related cognitive decline

  • R41.82—

    Altered mental status, unspecified

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