Is ICD-10-CM code S20-S29 billable?

No, S20-S29 (Injuries to the thorax (S20-S29)) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code S20-S29 belong to?

S20-S29 belongs to Chapter 19 of the ICD-10-CM tabular list: S00–T88 (Injury, Poisoning and Certain Other Consequences of External Causes).

S20-S29Non-billable

Injuries to the thorax (S20-S29)

Injury, Poisoning and Certain Other Consequences of External Causes·block·FY 2026

Use a more specific code (0 billable, 10 non-billable)

S20Superficial injury of thoraxhas subcodes S21Open wound of thoraxhas subcodes S22Fracture of rib(s), sternum and thoracic spinehas subcodes S23Dislocation and sprain of joints and ligaments of thoraxhas subcodes S24Injury of nerves and spinal cord at thorax levelhas subcodes S25Injury of blood vessels of thoraxhas subcodes S26Injury of hearthas subcodes S27Injury of other and unspecified intrathoracic organshas subcodes S28Crushing injury of thorax, and traumatic amputation of part of thoraxhas subcodes S29Other and unspecified injuries of thoraxhas subcodes

CH19 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)

birth trauma (P10-P15)
obstetric trauma (O70-O71)

Use Additional Code

code to identify any retained foreign body, if applicable (Z18.-)

Instructional Notes

Includes

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

Excludes2(Not included here. Code separately if applicable.)

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)

Clinical Hierarchy

BillableHas subcodes

CH19Injury, poisoning and certain other consequences of external causes (S00-T88)

S20-S29Injuries to the thorax (S20-S29)Not billable

S20Superficial injury of thoraxSubcodes

S21Open wound of thoraxSubcodes

S22Fracture of rib(s), sternum and thoracic spineSubcodes

S23Dislocation and sprain of joints and ligaments of thoraxSubcodes

S24Injury of nerves and spinal cord at thorax levelSubcodes

S25Injury of blood vessels of thoraxSubcodes

S26Injury of heartSubcodes

S27Injury of other and unspecified intrathoracic organsSubcodes

S28Crushing injury of thorax, and traumatic amputation of part of thoraxSubcodes

S29Other and unspecified injuries of thoraxSubcodes

MS-DRG Classification

2026

No direct MS-DRG triggers identified.