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R40.2A

Nontraumatic coma due to underlying condition

Billable

Code Hierarchy

R40R40.2R40.2A

Chapter: 18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

Section: R40-R46 - Symptoms and signs involving cognition, perception, emotional state and behavior

Coding Guidelines

Inclusion Terms

  • Secondary coma

Excludes1 (Mutually Exclusive)

These codes should never be used together with R40.2A

  • coma scale, best motor response (R40.24.-)
  • coma scale, best verbal response (R40.22.-)
  • coma scale, eyes open (R40.21.-)
  • Glasgow coma scale, total score (R40.23.-)

Code First

  • underlying condition

Related Codes

R40.20Billable

Unspecified coma

R40.21Category

Coma scale, eyes open

R40.22Category

Coma scale, best verbal response

R40.23Category

Coma scale, best motor response

R40.24Category

Glasgow coma scale, total score

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