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S31.43 vs T33

S31.43 (Puncture wound without foreign body of vagina and vulva) compared with T33 (Superficial frostbite), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Relationship

Informational

Excludes2 relationship

S31.43
Puncture wound without foreign body of vagina and vulva
T33
Superficial frostbite

Distinct conditions — both may be reported.

“frostbite (T33-T34)”

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: CMS ICD-10-CM tabular instructional notes

Can these codes be reported together?

Yes, when both are documented. S31.43 carries an Excludes2 note covering T33: “frostbite (T33-T34)”

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

Side by side

S31.43Puncture wound without foreign body of vagina and vulvaT33Superficial frostbite
Billing statusNon-billable headerNon-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)
DefinitionPuncture wound without foreign body of vagina and vulva is a non-billable ICD-10-CM category code (S31.43).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 S31The appropriate 7th character is to be added to each code from category T33
Includes
injuries to the abdominal wall
injuries to the anus
injuries to the buttock
injuries to the external genitalia
frostbite with partial thickness skin loss

Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources