2026 ICD-10-CM Diagnosis Code S12.9XXSFracture of neck, unspecified, sequela

ICD-10-CM Codes›S00–T88›S10-S19›S12

ICD-10-CM S12.9XXS
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S12.9XXS is a billable ICD-10-CM diagnosis code for fracture of neck, unspecified, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 551 through 552. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.

Code Identity

ICD-10-CM Code
S12.9XXS
Billable Status
Yes — Valid for Submission
Code Describes
Fracture of neck, unspecified, sequela
Short Description
Fracture of neck, unspecified, sequela
Same as the full description in the CMS dataset.
Parent Code
S12.9
Fracture of neck, unspecified

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS10-S19Injuries to the neck
CategoryS12Fracture of cervical vertebra and other parts of neck
This CodeS12.9XXSFracture of neck, unspecified, sequela

Present on Admission (POA)Billing

S12.9XXS is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Anterior cord syndrome due to closed fracture of C1-C4 level
  • Anterior cord syndrome due to closed fracture of C5-C7 level
  • Anterior cord syndrome due to open fracture of C1-C4 level
  • Anterior cord syndrome due to open fracture of C5-C7 level
  • Burst fracture of cervical vertebra
  • Central cord syndrome due to open fracture at C5-C7 level
  • Central cord syndrome of cervical spinal cord due to closed fracture at C1-C4 level
  • Central cord syndrome of cervical spinal cord due to closed fracture at C5-C7 level
  • Central cord syndrome of cervical spinal cord due to traumatic injury
  • Central cord syndrome of cervical spinal cord. due to open fracture at C1-C4 level
  • Closed fracture cervical vertebra, burst
  • Closed fracture cervical vertebra, posterior arch
  • Closed fracture cervical vertebra, spinous process
  • Closed fracture cervical vertebra, spondylolysis
  • Closed fracture cervical vertebra, transverse process
  • Closed fracture cervical vertebra, wedge
  • Closed fracture of C1-C4 level with incomplete cord lesion
  • Closed fracture of C1-C4 level with spinal cord injury
  • Closed fracture of C5-C7 level with incomplete spinal cord lesion
  • Closed fracture of C5-C7 level with spinal cord injury
  • Closed fracture of cervical spine
  • Closed spinal fracture with anterior cervical cord lesion, C1-4
  • Closed spinal fracture with anterior cervical cord lesion, C5-7
  • Closed spinal fracture with complete cervical cord lesion, C1-4
  • Closed spinal fracture with complete cervical cord lesion, C5-7
  • Closed spinal fracture with posterior cervical cord lesion, C1-4
  • Closed spinal fracture with posterior cervical cord lesion, C5-7
  • Compression fracture of cervical spine
  • Crush fracture of cervical vertebra
  • Fracture dislocation of cervical spine
  • Fracture dislocation of cervicothoracic junction
  • Fracture dislocation of spine
  • Fracture of cervical spine
  • Fracture of cervical spine with cord lesion
  • Fracture of pedicle of cervical vertebra
  • Fracture of spinous process of cervical vertebra
  • Fracture of transverse process of cervical vertebra
  • Fractures involving head with neck
  • Injury of cervical spinal cord due to closed fracture of cervical spine
  • Injury of cervical spinal cord due to open fracture of cervical spine
  • Late effect of fracture of cervical vertebra
  • Multiple closed fractures of cervical vertebrae
  • Multiple fractures of cervical spine
  • Multiple open fractures of cervical vertebrae
  • Open fracture cervical vertebra, burst
  • Open fracture cervical vertebra, posterior arch
  • Open fracture cervical vertebra, spinous process
  • Open fracture cervical vertebra, spondylolysis
  • Open fracture cervical vertebra, transverse process
  • Open fracture cervical vertebra, tricolumnar
  • Open fracture cervical vertebra, wedge
  • Open fracture of C1-C4 level with incomplete spinal cord lesion
  • Open fracture of C1-C4 level with spinal cord injury
  • Open fracture of C5-C7 level with incomplete spinal cord lesion
  • Open fracture of C5-C7 level with spinal cord injury
  • Open fracture of cervical spine
  • Open spinal fracture with central cervical cord lesion, C5-7
  • Open spinal fracture with complete cervical cord lesion, C1-4
  • Open spinal fracture with complete cervical cord lesion, C5-7
  • Open spinal fracture with posterior cervical cord lesion, C1-4
  • Open spinal fracture with posterior cervical cord lesion, C5-7
  • Posterior cord syndrome due to closed fracture of C1-C4 level
  • Posterior cord syndrome due to closed fracture of C5-C7 level
  • Posterior cord syndrome due to open fracture of C1-C4 level
  • Posterior cord syndrome due to open fracture of C5-C7 level
  • Sequelae of injuries of neck and trunk
  • Spondylolysis of cervical spine
  • Teardrop fracture of cervical vertebra
  • Three column fracture of cervical vertebra
  • Traumatic anterior cord syndrome
  • Two column fracture of cervical vertebra
  • Wedge fracture of cervical vertebra
  • Wedge fracture of vertebra

Coding GuidelinesGuidance

The principles of multiple coding of injuries should be followed in coding fractures. Fractures of specified sites are coded individually by site, to the level of detail furnished by medical record content.

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

Initial vs. Subsequent Encounter for Fractures

Traumatic fractures are coded using the appropriate 7th character for initial encounter (A, B, C) while the patient is receiving active treatment for the fracture. The appropriate 7th character for initial encounter should also be assigned for a patient who delayed seeking treatment for the fracture or nonunion.

Fractures are coded using the appropriate 7th character for subsequent care for encounters after the patient has completed active treatment of the fracture and is receiving routine care for the fracture during the healing or recovery phase.

Care for complications of surgical treatment for fracture repairs during the healing or recovery phase should be coded with the appropriate complication codes.

Care of complications of fractures, such as malunion and nonunion, should be reported with the appropriate 7th character for subsequent care with nonunion (K, M, N) or subsequent care with malunion (P, Q, R).

The open fracture designations in the assignment of the 7th character for fractures of the forearm, femur and lower leg, including ankle are based on the Gustilo open fracture classification. When the Gustilo classification type is not specified for an open fracture, the 7th character for open fracture type I or II should be assigned (B, E, H, M, Q).

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INJ073
Injury, sequela
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Fractures

A fracture is a break in a bone. Fractures are usually caused by injuries. Since they can sometimes be serious, it's important to get medical care right away if you think you have a fracture.

The full article covers:

  • What is a fracture?
  • What are the different types of fractures?
  • What causes fractures?
  • What are the symptoms of a fracture?
  • How are fractures diagnosed?
  • What are the treatments for fractures?
  • Can fractures be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert S12.9XXS to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
905.1 Late eff spine/trunk fx
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About S12.9XXSOverview

Is S12.9XXS (Fracture of neck, unspecified) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report fracture of neck, unspecified, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character S in S12.9XXS mean?

The final character S makes this a sequela code: it reports a lingering problem that remains after the fracture of neck, unspecified itself has resolved, not the original event.

What MS-DRG does S12.9XXS group to?

When fracture of neck, unspecified, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 551, 552, with relative weights from 0.9613 to 1.6761 depending on complications. Higher weights mean higher Medicare reimbursement.

Is S12.9XXS exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for fracture of neck, unspecified, sequela on inpatient claims.

What is the ICD-9 equivalent of S12.9XXS?

Under the General Equivalence Mappings, fracture of neck, unspecified, sequela converts to ICD-9-CM 905.1 (late eff spine/trunk fx). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.