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S06.1X3A vs T33

S06.1X3A (Traumatic cerebral edema with loss of consciousness of 1 hour to 5 hours 59 minutes, initial encounter) compared with T33 (Superficial frostbite), from the official CMS tabular data.

Summary

These codes can be reported together when both conditions are documented, because S06.1X3A lists T33 under Excludes2, which marks them as distinct conditions.

Official rule
What is different?

The conditions named and billing status.S06.1X3A is “Traumatic cerebral edema with loss of consciousness of 1 hour to 5 hours 59 minutes, initial encounter”; T33 is “Superficial frostbite”. T33 is a non-billable header; S06.1X3A is billable.

Registry fact

Can these codes be reported together?

Yes, when both are documented.S06.1X3A lists T33 under Excludes2: “frostbite (T33-T34)”. Excludes2 marks distinct conditions that may both be reported when both are documented.

Official ruleGuide: Excludes1 vs Excludes2

Is there an Excludes1 relationship?

None.Neither entry carries an Excludes1 note that names the other code. S06.1X3A carries 1 Excludes1 note covering other codes; the side-by-side table quotes them.

Official rule

Is there an Excludes2 relationship?

Yes.S06.1X3A’s tabular entry: “frostbite (T33-T34)”. The note covers T33.

Official ruleGuide: Excludes1 vs Excludes2

Is one more specific?

Not comparable.The codes sit in different categories; specificity is only comparable within one category.

Is one a parent or header code?

One is a header.T33 is a non-billable header, but S06.1X3A is not one of its subdivisions.

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

S06.1X3A
Traumatic cerebral edema with loss of consciousness of 1 hour to 5 hours 59 minutes, initial encounter
↔
T33
Superficial frostbite

What we found

Yes, when both are documented.S06.1X3A carries an Excludes2 note covering T33: “frostbite (T33-T34)”

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 FY2026

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

S06.1X3ATraumatic cerebral edema with loss of consciousness of 1 hour to 5 hours 59 minutes, initial encounterT33Superficial frostbite
Billing statusBillableNon-billable header

Report instead: T33.011A, T33.011D, T33.011S, T33.012A, T33.012D

ClassificationS00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)
DefinitionTraumatic cerebral edema with loss of consciousness of 1 hour to 5 hours 59 minutes, initial encounter is a billable ICD-10-CM diagnosis code (S06.1X3A).Superficial frostbite is a non-billable ICD-10-CM category code (T33).
7th characterThe appropriate 7th character is to be added to each code from category S06, except as noted belowThe appropriate 7th character is to be added to each code from category T33
Includes
traumatic brain injury
injuries of ear
injuries of eye
injuries of face [any part]
frostbite with partial thickness skin loss
Excludes1
head injury NOS (S09.90)
—
Excludes2
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)
hypothermia and other effects of reduced temperature (T68, T69.-)
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.-)
for any associated infection
—

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.

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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