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S99.239K vs T34

S99.239K (Salter-Harris Type III physeal fracture of phalanx of unspecified toe, subsequent encounter for fracture with nonunion) compared with T34 (Frostbite with tissue necrosis), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Can these codes be reported together?

Yes, when both are documented. S99.239K carries an Excludes2 note covering T34: “frostbite (T33-T34)”

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

Side by side

S99.239KSalter-Harris Type III physeal fracture of phalanx of unspecified toe, subsequent encounter for fracture with nonunionT34Frostbite with tissue necrosis
Billing statusBillableNon-billable header

Report instead: T34.011A, T34.011D, T34.011S, T34.012A, T34.012D

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)
DefinitionSalter-Harris Type III physeal fracture of phalanx of unspecified toe, subsequent encounter for fracture with nonunion is a billable ICD-10-CM diagnosis code (S99.239K).Frostbite with tissue necrosis is a non-billable ICD-10-CM category code (T34).
7th characterThe appropriate 7th character is to be added to each code from subcategories S99.2The appropriate 7th character is to be added to each code from category T34

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