Sprain of unspecified parts of thorax

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 3 more specific codes instead:

S23.9XXA Sprain of unspecified parts of thorax, initial encounter
S23.9XXD Sprain of unspecified parts of thorax, subsequent encounter
S23.9XXS Sprain of unspecified parts of thorax, sequela

This code requires a seventh character. See the rule below.

What has happened to this code

Every change the publisher made, from 2014 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

FY2014 Added to the draft code set draft Sprain of unspecified parts of thorax

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from S23 Dislocation and sprain of joints and ligaments of thorax

Seventh character required

The appropriate 7th character is to be added to each code from category S23

Excludes2 - not included here

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

Code also

any associated open wound

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

Inherited from the S20-S29 section Injuries to the thorax (S20-S29)

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)

Includes

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

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Tenosynovitis
Injury > chest
Injury > axilla
Sprain > scapula
Avulsion > ligament
Division > ligament
Detachment > ligament
Dislocation > partial
Disruption > ligament
Laceration > ligament
Tear, torn > ligament
Detachment > cartilage
Tear, torn > cartilage
Dislocation > incomplete
Hemarthrosis > traumatic
Injury > scapular region
Avulsion > joint > capsule
Injury > shoulder > sprain
Laceration > joint capsule
Injury > interscapular area
Laceration > capsule, joint
Tear, torn > capsule, joint
Disorder > tendon > synovitis
Rupture, ruptured > cartilage
Synovitis > traumatic, current
Disorder > joint > hemarthrosis
Disorder > synovium > synovitis
Hemorrhage, hemorrhagic > joint
Sprain > shoulder joint > blade
Dislocation > vertebra > partial
Subluxation > ligament, traumatic
Rupture, ruptured > traumatic > ligament
Rupture, ruptured > joint capsule, traumatic
Injury > thorax, thoracic > external > sprain
Sprain > shoulder joint > coracoclavicular joint
Sprain > shoulder joint > coracohumeral ligament
Sprain > shoulder joint > acromioclavicular joint
Sprain > thorax

Codes in the same group

Code	Description	Status
S23.0	Traumatic rupture of thoracic intervertebral disc	Not billable
S23.1	Subluxation and dislocation of thoracic vertebra	Not billable
S23.2	Dislocation of other and unspecified parts of thorax	Not billable
S23.3	Sprain of ligaments of thoracic spine	Not billable
S23.4	Sprain of ribs and sternum	Not billable
S23.8	Sprain of other specified parts of thorax	Not billable