R40.0 - Somnolence

Applicable to Somnolence
The 2025 edition of ICD10-CM R40.0 became effective on October 1, 2024.
This is the American ICD10-CM version of R40.0 - other international versions of ICD10 R40.0 may differ.
R40.0 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Inclusion Term

Drowsiness

Type 1 Excludes

coma (R40.2-)

The following codes above R40.0 contain annotation back-references that may be applicable to R40.0:

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

somnolence icd 10

laboratory icd 10

findings icd 10

behavior icd 10

cognition icd 10

clinical icd 10

emotional icd 10

abnormal icd 10

perception icd 10

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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