S06.820 — Injury of left internal carotid artery, intracranial portion, not elsewhere classified without loss of consciousness
Is S06.820 billable?
No — S06.820 is a non-billable header code. S06.820 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 3 billable codes beneath S06.820.
Billable codes under this header
- S06.820AInjury of left internal carotid artery, intracranial portion, not elsewhere classified without loss of consciousness, initial encounter
- S06.820DInjury of left internal carotid artery, intracranial portion, not elsewhere classified without loss of consciousness, subsequent encounter
- S06.820SInjury of left internal carotid artery, intracranial portion, not elsewhere classified without loss of consciousness, sequela
S06.820 at a glance
| Code | S06.820 |
|---|---|
| Description | Injury of left internal carotid artery, intracranial portion, not elsewhere classified without loss of consciousness |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is S06.820 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S06.8, the nearest indexed parent of S06.820. Use them to find the family, then select the specific code.
- Injury › blood vessel NEC › carotid artery › internal, intracranial
Excludes1 — never code together — inherited from S06
The conditions below can never be reported together with S06.820 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- head injury NOS (S09.90)
Use additional code — inherited from Chapter 19
Report an additional code alongside S06.820 to fully describe the condition. S06.820 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from S06
Report an additional code alongside S06.820 to fully describe the condition. S06.820 is sequenced first.
- code, if applicable, to identify mild neurocognitive disorders due to known physiological condition (F06.7-)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of S06.820, but a patient may have both at the same time. When documentation supports it, S06.820 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S00-S09
The conditions below are not part of S06.820, but a patient may have both at the same time. When documentation supports it, S06.820 and the excluded code may both be reported.
- burns and corrosions (T20-T32)
- effects of foreign body in ear (T16)
- effects of foreign body in larynx (T17.3)
- effects of foreign body in mouth NOS (T18.0)
- effects of foreign body in nose (T17.0-T17.1)
- effects of foreign body in pharynx (T17.2)
- effects of foreign body on external eye (T15.-)
- frostbite (T33-T34)
- insect bite or sting, venomous (T63.4)
Code also — inherited from S00-S09
Two codes may be needed to describe the condition fully. Whether S06.820 is sequenced first depends on the reason for the encounter.
- for any associated infection
Code also — inherited from S06
Two codes may be needed to describe the condition fully. Whether S06.820 is sequenced first depends on the reason for the encounter.
What codes fall under S06.820? (3)
- S06.820AInjury of left internal carotid artery, intracranial portion, not elsewhere classified without loss of consciousness, initial encounter
- S06.820DInjury of left internal carotid artery, intracranial portion, not elsewhere classified without loss of consciousness, subsequent encounter
- S06.820SInjury of left internal carotid artery, intracranial portion, not elsewhere classified without loss of consciousness, sequela
How long has S06.820 existed?
S06.820 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
What other codes are in the S06.82 family? (10)
- S06.821Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of 30 minutes or lessnot billable
- S06.822Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of 31 minutes to 59 minutesnot billable
- S06.823Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of 1 hour to 5 hours 59 minutesnot billable
- S06.824Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of 6 hours to 24 hoursnot billable
- S06.825Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness greater than 24 hours with return to pre-existing conscious levelnot billable
- S06.826Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness greater than 24 hours without return to pre-existing conscious level with patient survivingnot billable
- S06.827Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of any duration with death due to brain injury prior to regaining consciousnessnot billable
- S06.828Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of any duration with death due to other cause prior to regaining consciousnessnot billable
- S06.82AInjury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness status unknownnot billable
- S06.829Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of unspecified durationnot billable