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
Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.
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 · 2022-10-01
Latest recorded change · FY2025 · 04-01
Effective from
Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness status unknown, subsequent encounter
Billable diagnosis code
CDC/NCHS · FY2025 · 04-01| All editions | Effective from | Code history |
|---|---|---|
| FY2023 | 2022-10-01 | Added |
| 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
Injury of left internal carotid artery, intracranial portion, not elsewhere classified NOS
Historical assignments from the CDC conversion table support data retrieval. They do not authorize substituting a previous code for the current code.
Previous assignment: S06.829D
Other entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| S06.82AA | Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness status unknown, initial encounter | Billable / specific |
| S06.82AS | Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness status unknown, sequela | Billable / specific |
Official titles and instructions are preserved in their source language. Official sources ↗
