ICD-10 CM Code S13.121
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S13 Dislocation and sprain of joints and ligaments at neck level
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S13.1 Subluxation and dislocation of cervical vertebrae
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S13.12 Subluxation and dislocation of C1/C2 cervical vertebrae
S13.121
Dislocation of C1/C2 cervical vertebrae
Includes
- avulsion of joint or ligament at neck level
- laceration of cartilage, joint or ligament at neck level
- sprain of cartilage, joint or ligament at neck level
- traumatic hemarthrosis of joint or ligament at neck level
- traumatic rupture of joint or ligament at neck level
- traumatic subluxation of joint or ligament at neck level
- traumatic tear of joint or ligament at neck level
Inclusion Term
- Subluxation and dislocation of atlantoaxial joint
Excludes Type 2
- fracture of cervical vertebrae (S12.0-S12.3-)
- strain of muscle or tendon at neck level (S16.1)
7th Character
- The appropriate 7th character is to be added to each code from category S13
- A - initial encounter
- D - subsequent encounter
- S - sequela
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