T34.521A Frostbite with tissue necrosis of right hand, initial encounter

Billable ICD-10-CM code, FY2026.

Built from T34.521 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

Applies from T34.52 Frostbite with tissue necrosis of hand

Excludes2 (not included here)

• frostbite with tissue necrosis of finger(s) (T34.53-)

Code annotations containing back-references to T34.521A

Back-references to T34.5

• Type 2 Excludes: T34.4 Frostbite with tissue necrosis of arm ("frostbite with tissue necrosis of wrist and hand (T34.5-)")

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

• T34.519A Frostbite with tissue necrosis of unspecified wrist, initial encounter
• T34.519D Frostbite with tissue necrosis of unspecified wrist, subsequent encounter
• T34.519S Frostbite with tissue necrosis of unspecified wrist, sequela
• T34.52 Frostbite with tissue necrosis of hand
• T34.521 Frostbite with tissue necrosis of right hand
• T34.521A Frostbite with tissue necrosis of right hand, initial encounter (this code)
• T34.521D Frostbite with tissue necrosis of right hand, subsequent encounter
• T34.521S Frostbite with tissue necrosis of right hand, sequela
• T34.522 Frostbite with tissue necrosis of left hand
• T34.522A Frostbite with tissue necrosis of left hand, initial encounter
• T34.522D Frostbite with tissue necrosis of left hand, subsequent encounter