T34.821S Frostbite with tissue necrosis of right foot, sequela

Billable ICD-10-CM code, FY2026.

Built from T34.821 with 7th character S (sequela).

Applies from T34 Frostbite with tissue necrosis

7th character note

• The appropriate 7th character is to be added to each code from category T34

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Code annotations containing back-references to T34.821S

Back-references to T34.8

• Type 2 Excludes: T34.7 Frostbite with tissue necrosis of knee and lower leg ("frostbite with tissue necrosis of ankle and foot (T34.8-)")

Back-references to T34

• Type 2 Excludes: I73 Other peripheral vascular diseases ("frostbite (T33-T34)")
• Type 2 Excludes: T68 Hypothermia ("frostbite (T33-T34)")
• Type 2 Excludes: T69 Other effects of reduced temperature ("frostbite (T33-T34)")

Nearby codes

• T34.819S Frostbite with tissue necrosis of unspecified ankle, sequela
• T34.82 Frostbite with tissue necrosis of foot
• T34.821 Frostbite with tissue necrosis of right foot
• T34.821A Frostbite with tissue necrosis of right foot, initial encounter
• T34.821D Frostbite with tissue necrosis of right foot, subsequent encounter
• T34.821S Frostbite with tissue necrosis of right foot, sequela (this code)
• T34.822 Frostbite with tissue necrosis of left foot
• T34.822A Frostbite with tissue necrosis of left foot, initial encounter
• T34.822D Frostbite with tissue necrosis of left foot, subsequent encounter
• T34.822S Frostbite with tissue necrosis of left foot, sequela
• T34.829 Frostbite with tissue necrosis of unspecified foot