S23

ICD-10Non-billable category

Dislocation and sprain of joints and ligaments of thorax

Official ICD-10-CM descriptor (FY2026)

Dislocation and sprain of joints and ligaments of thorax

S23 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

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. The condition is not part of this code, but a patient may have both, and both codes may be reported together.

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

Code also

Two codes may be needed; sequencing depends on the reason for the encounter.

  • any associated open wound

7th character

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

Permitted 7th characters

Ainitial encounter
Dsubsequent encounter
Ssequela

More specific codes under S23

Where this code sits

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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