Is S12 a billable ICD-10-CM code?

No. S12 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does S12 sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the neck (S10-S19).

S12

S12 — Fracture of cervical vertebra and other parts of neck

Non-billable headerICD-10-CM

S12 is a non-billable header ICD-10-CM code for fracture of cervical vertebra and other parts of neck. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

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

Code first

The underlying condition must be sequenced before this code.

any associated cervical spinal cord injury (S14.0, S14.1-)

Includes

Conditions this code covers.

fracture of cervical neural arch
fracture of cervical spine
fracture of cervical spinous process
fracture of cervical transverse process
fracture of cervical vertebral arch
fracture of neck

Notes

Additional guidance from the ICD-10-CM tabular list.

A fracture not indicated as displaced or nondisplaced should be coded to displaced
A fracture not indicated as open or closed should be coded to closed

Other codes that can never be billed with S12

These codes carry an Excludes1 note pointing at S12. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading S12 alone.

M48.4Fatigue fracture of vertebra
M48.5Collapsed vertebra, not elsewhere classified
M84.3Stress fracture
M84.4Pathological fracture, not elsewhere classified

Risk adjustment

S12 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead S12

9 child codes. Green means billable.

Questions about S12

Is S12 a billable ICD-10-CM code?: No. S12 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does S12 sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the neck (S10-S19).