Is ICD-10-CM code S23 billable?

No, S23 (Dislocation and sprain of joints and ligaments of thorax) 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 S23 belong to?

S23 belongs to Chapter 19 of the ICD-10-CM tabular list: S00–T88 (Injury, Poisoning and Certain Other Consequences of External Causes).

S23Non-billable

Dislocation and sprain of joints and ligaments of thorax

Injury, Poisoning and Certain Other Consequences of External Causes·Injuries to the thorax (S20-S29)·category·FY 2026

Use a more specific code (4 billable, 3 non-billable)

S23.0Traumatic rupture of thoracic intervertebral disc S23.1Subluxation and dislocation of thoracic vertebrahas subcodes S23.2Dislocation of other and unspecified parts of thoraxhas subcodes S23.3Sprain of ligaments of thoracic spine S23.4Sprain of ribs and sternumhas subcodes S23.8Sprain of other specified parts of thorax S23.9Sprain of unspecified parts of thorax

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.-)

S20-S29 Parent Instructions

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)

Instructional Notes

Includes

avulsion of joint or ligament of thorax
laceration of cartilage, joint or ligament of thorax
sprain of cartilage, joint or ligament of thorax
traumatic hemarthrosis of joint or ligament of thorax
traumatic rupture of joint or ligament of thorax
traumatic subluxation of joint or ligament of thorax
traumatic tear of joint or ligament of thorax

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

dislocation, sprain of sternoclavicular joint (S43.2, S43.6)
strain of muscle or tendon of thorax (S29.01-)

Code Also

any associated open wound

Clinical Hierarchy

BillableHas subcodes

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

S20-S29Injuries to the thorax (S20-S29)

S23Dislocation and sprain of joints and ligaments of thoraxNot billable

S23.0Traumatic rupture of thoracic intervertebral discBillable

S23.1Subluxation and dislocation of thoracic vertebraSubcodes

S23.2Dislocation of other and unspecified parts of thoraxSubcodes

S23.3Sprain of ligaments of thoracic spineBillable

S23.4Sprain of ribs and sternumSubcodes

S23.8Sprain of other specified parts of thoraxBillable

S23.9Sprain of unspecified parts of thoraxBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.