T34.829A Frostbite with tissue necrosis of unspecified foot, initial encounter

Billable ICD-10-CM code, FY2026.

Built from T34.829 with 7th character A (initial encounter).

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

Medicare Code Edits (MCE v43.1 (April 2026))

• Unspecified code (laterality): Unspecified codes for which a more specific code identifying laterality (right, left, bilateral) exists within the same code family.

Code annotations containing back-references to T34.829A

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

• T34.822 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
• T34.829A Frostbite with tissue necrosis of unspecified foot, initial encounter (this code)
• T34.829D Frostbite with tissue necrosis of unspecified foot, subsequent encounter
• T34.829S Frostbite with tissue necrosis of unspecified foot, sequela
• T34.83 Frostbite with tissue necrosis of toe(s)
• T34.831 Frostbite with tissue necrosis of right toe(s)
• T34.831A Frostbite with tissue necrosis of right toe(s), initial encounter