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S06.821

Non-billable

Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of 30 minutes or less

S06.821 is the ICD-10-CM code for Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of 30 minutes or less. It is a non-billable category code — use a more specific child code such as S06.821A for billing.

Status
Header (non-billable)
Chapter
S00-T88
Parent
S06.82
Subcodes
3
Edition
FY2026

S00-T88 Injury, poisoning and certain other consequences of external causes

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What this means — in plain language

MedlinePlus · NIH

What is traumatic brain injury (TBI)? Traumatic brain injury (TBI) is a sudden injury that causes damage to the brain. It may happen when there is a blow, bump, or jolt to the head. This is a closed head injury. A TBI can also happen when an object penetrates the skull. This is a penetrating injury. Symptoms of a TBI can be mild, moderate, or severe. Concussions are a type of mild TBI. The effects of a concussion…

Read more about Traumatic Brain Injury at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Includes

  • •Injury of left internal carotid artery, intracranial portion, not elsewhere classified with brief loss of consciousness

Medications indicated for this condition

FDA labeling

Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.

Conditions mapped to this code

MedlinePlus · NIH
ConcussionTraumatic Brain Injury

Plain-language health-topic references grounded in MedlinePlus (NIH/NLM).

Benefits & assistance programs

Federal & state

Assistance programs whose eligibility maps to this condition's category. Informational only — eligibility is determined by the administering agency.

Frequently asked questions

What is ICD-10 code S06.821?
S06.821 is the ICD-10-CM code for "Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of 30 minutes or less". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is S06.821 a billable code?
No — S06.821 is a non-billable header code. Use a more specific child code (such as S06.821A) for billing.
What are the subcodes of S06.821?
S06.821 has 3 more specific child codes, including S06.821A, S06.821D, S06.821S.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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