R40.2
⚠ Non-billable
Coma
ICD-10-CM · FY2026 · Symptoms, Signs and Abnormal Clinical and Laboratory Findings
Code
R40.2
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Symptoms, Signs and Abnormal Clinical and Laboratory Findings
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code R40.2?
ICD-10-CM code R40.2 represents Coma. It is a non-billable header code requiring a more specific subcategory in the Symptoms, Signs and Abnormal Clinical and Laboratory Findings chapter, effective October 1, 2025 – September 30, 2026.
Is R40.2 billable?
No. R40.2 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is R40.2 in?
R40.2 belongs to the Symptoms, Signs and Abnormal Clinical and Laboratory Findings chapter (R00–R99) of ICD-10-CM.
Related codes in the R40 category
R40
Somnolence, stupor and coma
Non-billable
R40.0
Somnolence
Billable
R40.1
Stupor
Billable
R40.3
Persistent vegetative state
Billable
R40.4
Transient alteration of awareness
Billable
R40.20
Unspecified coma
Billable
R40.21
Coma scale, eyes open
Non-billable
R40.22
Coma scale, best verbal response
Non-billable
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