S12.100A: Unspecified displaced fracture of second cervical vertebra, initial encounter for closed fracture
S12.100A is a billable, specific ICD-10-CM code for unspecified displaced fracture of second cervical vertebra, initial encounter for closed fracture. It is valid for submission on a claim.
Check S12.100A with the rest of the claim: free scrubber7th character "A": initial encounter for closed fracture
The appropriate 7th character is to be added to all codes from subcategories S12.0-S12.6
- A
- initial encounter for closed fracture
- B
- initial encounter for open fracture
- D
- subsequent encounter for fracture with routine healing
- G
- subsequent encounter for fracture with delayed healing
- K
- subsequent encounter for fracture with nonunion
- S
- sequela
Other codes that can never be billed with S12.100A
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
S12.100A risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 401 Vertebral Fractures without Spinal Cord Injury0.522 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.
Medicare coverage
S12.100A is named in 18 Medicare coverage policies: 18 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A56619Billing and Coding: Nerve Conduction Studies and Electromyography
- A56722Billing and Coding: Intraoperative Neurophysiological Testing
- A56773Billing and Coding: Neurophysiology Evoked Potentials (NEPs)
- A56802Billing and Coding: Urodynamics
Code history
Unchanged in every release from FY2024 to FY2027.
Other codes under S12.100
- S12.100BUnspecified displaced fracture of second cervical vertebra, initial encounter for open fracture
- S12.100DUnspecified displaced fracture of second cervical vertebra, subsequent encounter for fracture with routine healing
- S12.100GUnspecified displaced fracture of second cervical vertebra, subsequent encounter for fracture with delayed healing
- S12.100KUnspecified displaced fracture of second cervical vertebra, subsequent encounter for fracture with nonunion
- S12.100SUnspecified displaced fracture of second cervical vertebra, sequela