ICD-10-CM 2027 diagnosis code
S06.A1XSTraumatic brain compression with herniation, sequela
S06.A1XS is a valid, billable ICD-10-CM code for traumatic brain compression with herniation, sequela. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
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.A1XS
S06.A1XS is the ICD-10-CM diagnosis code for traumatic brain compression with herniation, sequela. 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 billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
The 7th character "S" means sequela: use it for complications or conditions that arise as a direct result of the original condition.
Use an additional code, if applicable, to identify mild neurocognitive disorders due to known physiological condition (F06.7-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 913 (Traumatic Injury with MCC, relative weight 1.5455) and DRG 914 (Traumatic Injury without MCC, relative weight 0.9285), in MDC 21 (Injuries, Poisonings and Toxic Effects of Drugs), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.
It was added in FY2022, effective October 1, 2021.
7th character
Ssequela
CC/MCC status for this injury by encounter: MCC for A; Neither CC nor MCC for D, S.
Other encounter types for S06.A1:
Notes that apply from higher levels
Instructions written at a parent level also apply to S06.A1XS.
› From S06 Intracranial injury
- 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.
- traumatic brain injury
- head injury NOS (S09.90)
- code, if applicable, to identify mild neurocognitive disorders due to known physiological condition (F06.7-)
Broader instructions also apply from S00-S09 Injuries to the head and Chapter 19: Injury, poisoning and certain other consequences of external causes.
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 21 · Injuries, Poisonings and Toxic Effects of Drugs
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2022 (effective 10/1/2021): Added
- No changes since FY2022.
Common questions about S06.A1XS
Is S06.A1XS billable?
- Yes. S06.A1XS is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
What does the "S" at the end of S06.A1XS mean?
- It is the 7th character for sequela. Per the official guidelines, use it for complications or conditions that arise as a direct result of the original condition.
Can S06.A1XS be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is S06.A1XS a CC or MCC?
- No. S06.A1XS is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does S06.A1XS group to?
- S06.A1XS is used in the MS-DRG v44.0 logic for MS-DRG 913 (Traumatic Injury with MCC) and MS-DRG 914 (Traumatic Injury without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.