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ICD-10-CM · FY 2026 APRIL UPDATE

S12.33

Unspecified traumatic spondylolisthesis of fourth 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
S12.330Unspecified traumatic displaced spondylolisthesis of fourth cervical vertebraCategory
S12.330AUnspecified traumatic displaced spondylolisthesis of fourth cervical vertebra, initial encounter for closed fractureBillable
S12.330BUnspecified traumatic displaced spondylolisthesis of fourth cervical vertebra, initial encounter for open fractureBillable
S12.330DUnspecified traumatic displaced spondylolisthesis of fourth cervical vertebra, subsequent encounter for fracture with routine healingBillable
S12.330GUnspecified traumatic displaced spondylolisthesis of fourth cervical vertebra, subsequent encounter for fracture with delayed healingBillable
S12.330KUnspecified traumatic displaced spondylolisthesis of fourth cervical vertebra, subsequent encounter for fracture with nonunionBillable
S12.330SUnspecified traumatic displaced spondylolisthesis of fourth cervical vertebra, sequelaBillable
S12.331Unspecified traumatic nondisplaced spondylolisthesis of fourth cervical vertebraCategory
S12.331AUnspecified traumatic nondisplaced spondylolisthesis of fourth cervical vertebra, initial encounter for closed fractureBillable
S12.331BUnspecified traumatic nondisplaced spondylolisthesis of fourth cervical vertebra, initial encounter for open fractureBillable
S12.331DUnspecified traumatic nondisplaced spondylolisthesis of fourth cervical vertebra, subsequent encounter for fracture with routine healingBillable
S12.331GUnspecified traumatic nondisplaced spondylolisthesis of fourth cervical vertebra, subsequent encounter for fracture with delayed healingBillable
S12.331KUnspecified traumatic nondisplaced spondylolisthesis of fourth cervical vertebra, subsequent encounter for fracture with nonunionBillable
S12.331SUnspecified traumatic nondisplaced spondylolisthesis of fourth 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.