T34.539A Frostbite with tissue necrosis of unspecified finger(s), initial encounter

Billable ICD-10-CM code, FY2026.

Built from T34.539 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 T34.539A

Back-references to T34.53

• Type 2 Excludes: T34.52 Frostbite with tissue necrosis of hand ("frostbite with tissue necrosis of finger(s) (T34.53-)")

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

• T34.532 Frostbite with tissue necrosis of left finger(s)
• T34.532A Frostbite with tissue necrosis of left finger(s), initial encounter
• T34.532D Frostbite with tissue necrosis of left finger(s), subsequent encounter
• T34.532S Frostbite with tissue necrosis of left finger(s), sequela
• T34.539 Frostbite with tissue necrosis of unspecified finger(s)
• T34.539A Frostbite with tissue necrosis of unspecified finger(s), initial encounter (this code)
• T34.539D Frostbite with tissue necrosis of unspecified finger(s), subsequent encounter
• T34.539S Frostbite with tissue necrosis of unspecified finger(s), sequela
• T34.6 Frostbite with tissue necrosis of hip and thigh
• T34.60 Frostbite with tissue necrosis of unspecified hip and thigh
• T34.60XA Frostbite with tissue necrosis of unspecified hip and thigh, initial encounter