S23.3Sprain of ligaments of thoracic spine

S23.3 is the ICD-10-CM diagnosis code for sprain of ligaments of thoracic spine. 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 3 subcodes must be used instead.

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

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