R40.4 - Transient alteration of awareness
- Applicable to Transient alteration of awareness
- The 2025 edition of ICD10-CM R40.4 became effective on October 1, 2024.
- This is the American ICD10-CM version of R40.4 - other international versions of ICD10 R40.4 may differ.
- R40.4 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The following codes above R40.4 contain annotation back-references that may be applicable to R40.4:
Chapter: R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
Section: R40-R46 Symptoms and signs involving cognition, perception, emotional state and behavior
Category: R40 Somnolence, stupor and coma
Billable/Specific Code
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Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
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