S21.311 – Laceration without foreign body of right front wall of thorax with penetration into thoracic cavity

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

Non-billable header

ICD-10-CM code S21.311

Code: S21.311 (claims format: S21311)
Description: Laceration without foreign body of right front wall of thorax with penetration into thoracic cavity
Short description: Lac w/o fb of r frnt wl of thorax w penet thoracic cavity
Billable: No – use a more specific code below
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: S21 › S21.3 › S21.31

Billable codes under S21.311

S21.311 is a header code and cannot be used on claims. Choose the most specific code:

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.

S21 – Open wound of thorax

Excludes1 (not coded here):

traumatic amputation (partial) of thorax (S28.1)

Code also:

any associated injury, such as:
injury of heart (S26.-)
injury of intrathoracic organs (S27.-)
rib fracture (S22.3-, S22.4-)
spinal cord injury (S24.0-, S24.1-)
traumatic hemopneumothorax (S27.3)
traumatic hemothorax (S27.1)
traumatic pneumothorax (S27.0)
wound infection

7th character note:

The appropriate 7th character is to be added to each code from category S21

S21.3 – Open wound of front wall of thorax with penetration into thoracic cavity

Applicable to:

Open wound of chest with penetration into thoracic cavity

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 S21.31

Frequently asked questions

What is ICD-10 code S21.311?

S21.311 is the ICD-10-CM code for laceration without foreign body of right front wall of thorax with penetration into thoracic cavity, in the block S20-S29 (Injuries to the thorax).

Is S21.311 a billable code?

No. S21.311 is a header code with more specific child codes; report one of the billable codes listed above.

What category does S21.311 belong to?

It belongs to category S21 – Open wound 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.