T34.40XA – Frostbite with tissue necrosis of unspecified arm, initial encounter

ICD-10-CM 2027 diagnosis code · Frostbite

Billable code

ICD-10-CM code T34.40XA

Code: T34.40XA (claims format: T3440XA)
Description: Frostbite with tissue necrosis of unspecified arm, initial encounter
Short description: Frostbite with tissue necrosis of unsp arm, init encntr
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
Block: T33-T34 Frostbite
Parent codes: T34 › T34.4 › T34.40

7th character values

Codes in this category need a 7th character to describe the encounter or episode of care.

Character	Meaning
`A`	initial encounter
`D`	subsequent encounter
`S`	sequela

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

T34 – Frostbite with tissue necrosis

7th character note:

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

T34.4 – Frostbite with tissue necrosis of arm

Excludes2 (not included here):

frostbite with tissue necrosis of wrist and hand (T34.5-)

Block T33-T34

Excludes2 (not included here):

hypothermia and other effects of reduced temperature (T68, T69.-)

Related codes in T34.40

Frequently asked questions

What is ICD-10 code T34.40XA?

T34.40XA is the ICD-10-CM code for frostbite with tissue necrosis of unspecified arm, initial encounter, in the block T33-T34 (Frostbite).

Is T34.40XA a billable code?

Yes. T34.40XA is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does T34.40XA belong to?

It belongs to category T34 – Frostbite with tissue necrosis.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.