S06.821S
✓ Billable
Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of 30 minutes or less, sequela
ICD-10-CM · FY2026 · Injury, Poisoning and Certain Other Consequences of External Causes
Code
S06.821S
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Injury, Poisoning and Certain Other Consequences of External Causes
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 S06.821S?
ICD-10-CM code S06.821S represents Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of 30 minutes or less, sequela. It is a billable diagnosis code in the Injury, Poisoning and Certain Other Consequences of External Causes chapter, effective October 1, 2025 – September 30, 2026.
Is S06.821S billable?
Yes. S06.821S is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is S06.821S in?
S06.821S belongs to the Injury, Poisoning and Certain Other Consequences of External Causes chapter (S00–T88) of ICD-10-CM.
Related codes in the S06 category
S06
Intracranial injury
Non-billable
S06.0
Concussion
Non-billable
S06.1
Traumatic cerebral edema
Non-billable
S06.2
Diffuse traumatic brain injury
Non-billable
S06.3
Focal traumatic brain injury
Non-billable
S06.4
Epidural hemorrhage
Non-billable
S06.5
Traumatic subdural hemorrhage
Non-billable
S06.6
Traumatic subarachnoid hemorrhage
Non-billable
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