T23.042D – Burn of unspecified degree of multiple left fingers (nail), including thumb, subsequent encounter

ICD-10-CM 2027 diagnosis code · Burns and corrosions of external body surface, specified by site

Billable code

ICD-10-CM code T23.042D

Code: T23.042D (claims format: T23042D)
Description: Burn of unspecified degree of multiple left fingers (nail), including thumb, subsequent encounter
Short description: Burn of unsp deg mult left fingers (nail), inc thumb, subs
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: T20-T25 Burns and corrosions of external body surface, specified by site
Parent codes: T23 › T23.0 › T23.04 › T23.042

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.

T23 – Burn and corrosion of wrist and hand

7th character note:

The appropriate 7th character is to be added to each code from category T23

T23.0 – Burn of unspecified degree of wrist and hand

Use additional code:

external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92)

Block T20-T25

Includes:

burns and corrosions of first degree [erythema]
burns and corrosions of second degree [blisters][epidermal loss]
burns and corrosions of third degree [deep necrosis of underlying tissue] [full- thickness skin loss]

Use additional code:

code from category T31 or T32 to identify extent of body surface involved

Related codes in T23.042

Frequently asked questions

What is ICD-10 code T23.042D?

T23.042D is the ICD-10-CM code for burn of unspecified degree of multiple left fingers (nail), including thumb, subsequent encounter, in the block T20-T25 (Burns and corrosions of external body surface, specified by site).

Is T23.042D a billable code?

Yes. T23.042D is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does T23.042D belong to?

It belongs to category T23 – Burn and corrosion of wrist and hand.

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.