code to identify any retained foreign body, if applicable (Z18.-)
code, if applicable, to identify mild neurocognitive disorders due to known physiological condition (F06.7-)
head injury NOS (S09.90)
A — initial encounter
D — subsequent encounter
S — sequela
for any associated infection
For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗First observed · 2015-10-01
Latest recorded change · FY2025 · 04-01
Effective from
Injury 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 consciousness
Category — select a more specific code
CDC/NCHS · FY2025 · 04-01| All editions | Effective from | Code history |
|---|---|---|
| FY2016 | 2015-10-01 | First observed |
| FY2017 | 2016-10-01 | No tabular change |
| FY2018 | 2017-10-01 | Inherited rules changed |
| FY2019 | 2018-10-01 | No tabular change |
| FY2020 | 2019-10-01 | No tabular change |
| FY2020 · April | 2020-04-01 | No tabular change |
| FY2021 | 2020-10-01 | No tabular change |
| FY2021 · 01-01 | 2021-01-01 | No tabular change |
| FY2022 | 2021-10-01 | No tabular change |
| FY2022 · 04-01 | 2022-04-01 | No tabular change |
| FY2023 | 2022-10-01 | Inherited rules changed |
| FY2023 · 04-01 | 2023-04-01 | No tabular change |
| FY2024 | 2023-10-01 | No tabular change |
| FY2024 · 04-01 | 2024-04-01 | No tabular change |
| FY2025 | 2024-10-01 | No tabular change |
| FY2025 · 04-01 | 2025-04-01 | Inherited rules changed |
| FY2026 | 2025-10-01 | No tabular change |
| FY2026 · April | 2026-04-01 | No tabular change |
| FY2027 | 2026-10-01 | No tabular change |
The official Tabular List has no additional instructions at this code level.
Review the instructions inherited from its parent categories below. Inherited instructions ↓
code to identify any retained foreign body, if applicable (Z18.-)
traumatic brain injury
head injury NOS (S09.90)
code, if applicable, to identify mild neurocognitive disorders due to known physiological condition (F06.7-)
7th characters D and S do not apply to codes in category S06 with 6th character 7 - death due to brain injury prior to regaining consciousness, or 8 - death due to other cause prior to regaining consciousness.
The appropriate 7th character is to be added to each code from category S06, except as noted below
A — initial encounter
D — subsequent encounter
S — sequela
for any associated infection
Other entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| S06.820 | Injury of left internal carotid artery, intracranial portion, not elsewhere classified without loss of consciousness | Category · further specificity required |
| S06.821 | Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of 30 minutes or less | Category · further specificity required |
| S06.822 | Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of 31 minutes to 59 minutes | Category · further specificity required |
| S06.823 | Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of 1 hour to 5 hours 59 minutes | Category · further specificity required |
| S06.824 | Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of 6 hours to 24 hours | Category · further specificity required |
| S06.825 | Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness greater than 24 hours with return to pre-existing conscious level | Category · further specificity required |
| S06.826 | Injury 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 surviving | Category · further specificity required |
| S06.828 | Injury 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 consciousness | Category · further specificity required |
| S06.829 | Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of unspecified duration | Category · further specificity required |
| S06.82A | Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness status unknown | Category · further specificity required |
Official titles and instructions are preserved in their source language. Official sources ↗
