S23.171D Dislocation of T12/L1 thoracic vertebra, subsequent encounter

Billable ICD-10-CM code, FY2026.

Built from S23.171 with 7th character D (subsequent encounter).

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

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)

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

Code also

• any associated open wound

7th character note

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

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Applies from S23.1 Subluxation and dislocation of thoracic vertebra

Excludes2 (not included here)

• fracture of thoracic vertebrae (S22.0-)

Code also

• any associated:
• open wound of thorax (S21.-)
• spinal cord injury (S24.0-, S24.1-)

Diagnosis Index entries for S23.171D

• Dislocation (articular) › vertebra (articular process) (body) (traumatic) › thoracic › joint between › T12 and L1

Nearby codes

• S23.170A Subluxation of T12/L1 thoracic vertebra, initial encounter
• S23.170D Subluxation of T12/L1 thoracic vertebra, subsequent encounter
• S23.170S Subluxation of T12/L1 thoracic vertebra, sequela
• S23.171 Dislocation of T12/L1 thoracic vertebra
• S23.171A Dislocation of T12/L1 thoracic vertebra, initial encounter
• S23.171D Dislocation of T12/L1 thoracic vertebra, subsequent encounter (this code)
• S23.171S Dislocation of T12/L1 thoracic vertebra, sequela
• S23.2 Dislocation of other and unspecified parts of thorax
• S23.20 Dislocation of unspecified part of thorax
• S23.20XA Dislocation of unspecified part of thorax, initial encounter
• S23.20XD Dislocation of unspecified part of thorax, subsequent encounter