S23.1Subluxation and dislocation of thoracic vertebra

S23.1 is the ICD-10-CM diagnosis code for subluxation and dislocation of thoracic vertebra. It belongs to category S23 (dislocation and sprain of joints and ligaments of thorax), block S20-S29 (injuries to the thorax) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 8 subcodes must be used instead.

Within S23 (dislocation and sprain of joints and ligaments of thorax), S23.1 is specifically for subluxation and dislocation of thoracic vertebra. Related codes cover traumatic rupture of thoracic intervertebral disc (S23.0), dislocation of other and unspecified parts of thorax (S23.2), sprain of ligaments of thoracic spine (S23.3), sprain of ribs and sternum (S23.4), sprain of other specified parts of thorax (S23.8) and sprain of unspecified parts of thorax (S23.9).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

The conditions in its Excludes2 note aren't part of S23.1, but may be coded alongside it if the patient has both: fracture of thoracic vertebrae (S22.0-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.