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ICD-10-CM 2027 diagnosis code

S06.ATraumatic brain compression and herniation

Not billable — use a more specific codeRequires 7th character

S06.A is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it and add the required 7th character.

Code last changed in FY2022 (effective October 1, 2021). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About S06.A

S06.A is the ICD-10-CM diagnosis code for traumatic brain compression and herniation. It belongs to category S06 (intracranial injury), block S00-S09 (injuries to the head) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within S06 (intracranial injury), S06.A is specifically for traumatic brain compression and herniation. Related codes cover concussion (S06.0), traumatic cerebral edema (S06.1), diffuse traumatic brain injury (S06.2), focal traumatic brain injury (S06.3), epidural hemorrhage (S06.4), traumatic subdural hemorrhage (S06.5), traumatic subarachnoid hemorrhage (S06.6), other specified intracranial injuries (S06.8) and 1 more.

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

Code first the underlying traumatic brain injury, such as: diffuse traumatic brain injury (S06.2-), focal traumatic brain injury (S06.3-), traumatic subdural hemorrhage (S06.5-) and traumatic subarachnoid hemorrhage (S06.6-).

Use an additional code, if applicable, to identify mild neurocognitive disorders due to known physiological condition (F06.7-).

It was added in FY2022, effective October 1, 2021.

7th character

The appropriate 7th character is to be added to each code from category S06, except as noted below

  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Coding notes

Applicable toConditions and synonyms classified to this code
  • Traumatic cerebral compression
  • Traumatic midline shift of brain
Code firstSequence the underlying condition first
  • the underlying traumatic brain injury, such as:
  • diffuse traumatic brain injury (S06.2-)
  • focal traumatic brain injury (S06.3-)
  • traumatic subdural hemorrhage (S06.5-)
  • traumatic subarachnoid hemorrhage (S06.6-)

Notes that apply from higher levels

Instructions written at a parent level also apply to S06.A.

› From S06 Intracranial injury
Note
  • 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.
Includes
  • traumatic brain injury
Excludes1
Use additional code
  • code, if applicable, to identify mild neurocognitive disorders due to known physiological condition (F06.7-)
Code also
  • any associated:
  • open wound of head (S01.-)
  • skull fracture (S02.-)

Broader instructions also apply from S00-S09 Injuries to the head and Chapter 19: Injury, poisoning and certain other consequences of external causes.

Codes whose notes reference S06.A

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2022 (effective 10/1/2021): Added
  • No changes since FY2022.

Common questions about S06.A

Is S06.A billable?

No. S06.A is a header code. Report one of its more specific subcodes instead.