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ICD-10-CM · FY 2026 APRIL UPDATE

S12.04

Lateral mass fracture of first cervical vertebra

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
S12.040Displaced lateral mass fracture of first cervical vertebraCategory
S12.040ADisplaced lateral mass fracture of first cervical vertebra, initial encounter for closed fractureBillable
S12.040BDisplaced lateral mass fracture of first cervical vertebra, initial encounter for open fractureBillable
S12.040DDisplaced lateral mass fracture of first cervical vertebra, subsequent encounter for fracture with routine healingBillable
S12.040GDisplaced lateral mass fracture of first cervical vertebra, subsequent encounter for fracture with delayed healingBillable
S12.040KDisplaced lateral mass fracture of first cervical vertebra, subsequent encounter for fracture with nonunionBillable
S12.040SDisplaced lateral mass fracture of first cervical vertebra, sequelaBillable
S12.041Nondisplaced lateral mass fracture of first cervical vertebraCategory
S12.041ANondisplaced lateral mass fracture of first cervical vertebra, initial encounter for closed fractureBillable
S12.041BNondisplaced lateral mass fracture of first cervical vertebra, initial encounter for open fractureBillable
S12.041DNondisplaced lateral mass fracture of first cervical vertebra, subsequent encounter for fracture with routine healingBillable
S12.041GNondisplaced lateral mass fracture of first cervical vertebra, subsequent encounter for fracture with delayed healingBillable
S12.041KNondisplaced lateral mass fracture of first cervical vertebra, subsequent encounter for fracture with nonunionBillable
S12.041SNondisplaced lateral mass fracture of first cervical vertebra, sequelaBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.