2024 ICD-10-CM Diagnosis Code R40.2A

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Nontraumatic coma due to underlying condition

  • R40.2A is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • ICD-10-CM R40.2A is a new 2024 ICD-10-CM code that became effective on October 1, 2023.
  • This is the American ICD-10-CM version of R40.2A – other international versions of ICD-10 R40.2A may differ.

Applicable To

  • Secondary coma

Code First

  • underlying condition

The following code(s) above R40.2A contain annotation back-references

 that may be applicable to R40.2A:

  • R00-R99  Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
  • R40-R46  Symptoms and signs involving cognition, perception, emotional state and behavior
  • R40  Somnolence, stupor and coma
  • R40.2  Coma

ICD-10-CM R40.2A is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 080 Nontraumatic stupor and coma with mcc
  • 081 Nontraumatic stupor and coma without mcc
  • 791 Prematurity with major problems
  • 793 Full term neonate with major problems

Code History

  • 2024 (effective 10/1/2023): New code

Diagnosis Index entries containing back-references to R40.2A:

  • ComaR40.20
    • nontraumatic, due to underlying condition R40.2A
    • secondary R40.2A