S25.301A – Unspecified injury of right innominate or subclavian vein, initial encounter

ICD-10-CM 2027 diagnosis code · Injuries to the thorax

Billable code

ICD-10-CM code S25.301A

Code: S25.301A (claims format: S25301A)
Description: Unspecified injury of right innominate or subclavian vein, initial encounter
Short description: Unsp injury of right innominate or subclavian vein, init
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: S20-S29 Injuries to the thorax
Parent codes: S25 › S25.3 › S25.30 › S25.301

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.

S25 – Injury of blood vessels of thorax

Code also:

any associated open wound (S21.-)

7th character note:

The appropriate 7th character is to be added to each code from category S25

Block S20-S29

Includes:

injuries of breast
injuries of chest (wall)
injuries of interscapular area

Excludes2 (not included here):

burns and corrosions (T20-T32)
effects of foreign body in bronchus (T17.5)
effects of foreign body in esophagus (T18.1)
effects of foreign body in lung (T17.8)
effects of foreign body in trachea (T17.4)
frostbite (T33-T34)
injuries of axilla
injuries of clavicle
injuries of scapular region
injuries of shoulder
insect bite or sting, venomous (T63.4)

Related codes in S25.301

Frequently asked questions

What is ICD-10 code S25.301A?

S25.301A is the ICD-10-CM code for unspecified injury of right innominate or subclavian vein, initial encounter, in the block S20-S29 (Injuries to the thorax).

Is S25.301A a billable code?

Yes. S25.301A is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does S25.301A belong to?

It belongs to category S25 – Injury of blood vessels of thorax.

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.