Skip to main content

S06.1 vs S06.8AA

S06.1 (Traumatic cerebral edema) compared with S06.8AA (Primary blast injury of brain, not elsewhere classified with loss of consciousness status unknown), from the official CMS tabular data.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Summary

These codes can be reported together when both conditions are documented, because S06.8AA lists S06.1 under Excludes2, which marks them as distinct conditions.

Official rule
What is different?

The conditions named.S06.1 is “Traumatic cerebral edema”; S06.8AA is “Primary blast injury of brain, not elsewhere classified with loss of consciousness status unknown”.

Registry fact

Can these codes be reported together?

Yes, when both are documented.S06.8AA lists S06.1 under Excludes2: “traumatic cerebral edema (S06.1)”. Excludes2 marks distinct conditions that may both be reported when both are documented.

Official ruleGuide: Excludes1 vs Excludes2

Is there an Excludes2 relationship?

Yes.S06.8AA’s tabular entry: “traumatic cerebral edema (S06.1)”. The note covers S06.1.

Official ruleGuide: Excludes1 vs Excludes2

Is one a parent or header code?

Both are headers.Both are non-billable headers, and neither contains the other.

Registry fact

Nothing found in 4 other checks
Is there an Excludes1 relationship?

None.Neither entry carries an Excludes1 note that names the other code. S06.1 carries 1 Excludes1 note and S06.8AA carries 1 Excludes1 note covering other codes; the side-by-side table quotes them.

Official rule

Is one more specific?

No.Neither is a subdivision of the other, and neither title is the unspecified form; they describe different conditions within category S06.

Registry fact

Are there sequencing instructions?

None.Neither entry carries a Code First or Use Additional Code note that names the other.

Official rule

Are there other coding relationships?

None found.No laterality, encounter-phase, Table of Neoplasms, Table of Drugs and Chemicals, or history-versus-active-disease relationship links these codes.

MedCoder-derived

Official rule: a tabular instructional note or a section of the ICD-10-CM Official Guidelines, quoted as published. Registry fact: the codes’ own published attributes (titles, billable status, position in the hierarchy, code set). MedCoder-derived: a reading MedCoder computes from those facts; it is not itself a rule. How to read the labels

Can these codes be reported together?

Informational

Excludes2 relationship

S06.8AA
Primary blast injury of brain, not elsewhere classified with loss of consciousness status unknown
↔
S06.1
Traumatic cerebral edema

What we found

Yes, when both are documented.S06.8AA carries an Excludes2 note covering S06.1: “traumatic cerebral edema (S06.1)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

What to review

Report both only when the documentation supports both conditions; otherwise report the one documented.

Guide: Excludes1 vs Excludes2Check these on a claim

Why it matters

An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.

Source / rule

CMS ICD-10-CM tabular instructional notes

Official guidance behind these answers

  • Section I.A.12.b — Excludes2 · applies to: Excludes2

    A type 2 Excludes note represents “Not included here.” An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

    ICD-10-CM Official Guidelines FY2027

Quoted from the ICD-10-CM Official Guidelines for Coding and Reporting in effect for the release shown. The tabular notes above are the code-level instruction; these sections are the convention that says how such a note is applied. Source document (CMS PDF) · Release and checksum

Side by side

Similar descriptions do not make codes interchangeable. The documentation and the official instructions decide which code applies.

Official descriptionDiffers
S06.1

Traumatic cerebral edema

S06.8AA

Primary blast injury of brain, not elsewhere classified with loss of consciousness status unknown

StatusDiffers
S06.1
Non-billable header

A header is not reported on a claim; a code beneath it is.

Report instead: S06.1X0A, S06.1X0D, S06.1X0S, S06.1X1A, S06.1X1D

S06.8AA
Non-billable header

A header is not reported on a claim; a code beneath it is.

Report instead: S06.8AAA, S06.8AAD, S06.8AAS

Excludes1Same for both
  • head injury NOS (S09.90)
Excludes2Differs
Only at S06.1

No note of its own beyond the shared notes

Only at S06.8AA
  • traumatic cerebral edema (S06.1)
Shared by both codes (9 notes)
  • 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)
Use additional codeSame for both
  • code, if applicable, to identify mild neurocognitive disorders due to known physiological condition (F06.7-)
Code alsoDiffers
Only at S06.1

No note of its own beyond the shared notes

Only at S06.8AA
  • , if applicable, focal traumatic brain injury (S06.3-)
Shared by both codes (4 notes)
  • any associated:
  • open wound of head (S01.-)
  • skull fracture (S02.-)
  • for any associated infection
CategorySame for both

S06 Intracranial injury

ChapterSame for both

S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)

IncludesDiffers
Only at S06.1
  • Diffuse traumatic cerebral edema
  • Focal traumatic cerebral edema
Only at S06.8AA
  • Primary blast injury of brain NOS
Shared by both codes (13 notes)
  • traumatic brain injury
  • injuries of ear
  • injuries of eye
  • injuries of face [any part]
  • injuries of gum
  • injuries of jaw
  • injuries of oral cavity
  • injuries of palate
  • injuries of periocular area
  • injuries of scalp
  • injuries of temporomandibular joint area
  • injuries of tongue
  • injuries of tooth
7th characterSame for both
  • The appropriate 7th character is to be added to each code from category S06, except as noted below

No Code first note at either code.

Notes are the code’s own tabular entry, quoted as published. A note that names the other code is the one the verdict above rests on. In a row that differs, each code’s own notes are listed under it, and the notes every code shares are listed once beneath them.

Edit this comparisonCheck a whole claim

Derived from the official CMS ICD-10-CM tabular data (FY2027). A coding-rule comparison, not billing advice: payer-specific edits and medical-necessity policy are outside its scope. All data sources