2027 ICD-10-CM Diagnosis Code S13.4XXDSprain of ligaments of cervical spine, subsequent encounter

ICD-10-CM Codes›S00–T88›S10-S19›S13

ICD-10-CM S13.4XXD
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

S13.4XXD is a billable ICD-10-CM diagnosis code for sprain of ligaments of cervical spine, subsequent encounter. The 7th character D marks it as a subsequent encounter code, used during routine care in the healing or recovery phase. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 949 through 950. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Sprains and strains, subsequent encounter.

Code Identity

ICD-10-CM Code
S13.4XXD
Billable Status
Yes — Valid for Submission
Code Describes
Sprain of ligaments of cervical spine, subsequent encounter
Short Description
Sprain of ligaments of cervical spine, subsequent encounter
Same as the full description in the CMS dataset.
Parent Code
S13.4
Sprain of ligaments of cervical spine

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS10-S19Injuries to the neck
CategoryS13Dislocation and sprain of joints and ligaments at neck level
This CodeS13.4XXDSprain of ligaments of cervical spine, subsequent encounter

Present on Admission (POA)Billing

S13.4XXD is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Injuries to the neck (S10-S19).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute cervical sprain
  • Acute headache
  • Acute headache due to whiplash injury
  • Acute pain due to injury
  • Acute posttraumatic headache
  • Atlantoaxial joint sprain
  • Cervical anterior longitudinal ligament sprain
  • Cervical spine sprain
  • Injury to ligament of cervical spine
  • Neck pain co-occurrent with neck stiffness following whiplash injury to neck
  • Neck pain co-occurrent with neurological deficit following whiplash injury to neck
  • Neck pain co-occurrent with tenderness of neck following whiplash injury to neck
  • Neck sprain
  • Neurological deficit
  • Posttraumatic headache
  • Sprain of spinal ligament
  • Stiff neck
  • Tenderness of neck
  • Traumatic torticollis
  • Whiplash injury to neck

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Dislocation and sprain of joints and ligaments at neck level (S13). Use the following options for the applicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027, published by CMS and the National Center for Health Statistics.

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to S13.4XXD: its own notes plus those printed at S13, block S10-S19, and Chapter 19. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From S13 Dislocation and sprain of joints and ligaments at neck level applies to 75 codes
  • avulsion of joint or ligament at neck level
  • laceration of cartilage, joint or ligament at neck level
  • sprain of cartilage, joint or ligament at neck level
  • traumatic hemarthrosis of joint or ligament at neck level
  • traumatic rupture of joint or ligament at neck level
  • traumatic subluxation of joint or ligament at neck level
  • traumatic tear of joint or ligament at neck level
From Block S10-S19 Injuries to the neck applies to 1,074 codes
  • injuries of nape
  • injuries of supraclavicular region
  • injuries of throat

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From S13 Dislocation and sprain of joints and ligaments at neck level applies to 75 codes
  • strain of muscle or tendon at neck level (S16.1)
From Block S10-S19 Injuries to the neck applies to 1,074 codes
  • burns and corrosions (T20-T32)
  • effects of foreign body in esophagus (T18.1)
  • effects of foreign body in larynx (T17.3)
  • effects of foreign body in pharynx (T17.2)
  • effects of foreign body in trachea (T17.4)
  • frostbite (T33-T34)
  • insect bite or sting, venomous (T63.4)
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • code to identify any retained foreign body, if applicable (Z18.-)

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

From S13 Dislocation and sprain of joints and ligaments at neck level applies to 75 codes
  • any associated open wound

Notes

General instructions on how these codes are used.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

From S13 Dislocation and sprain of joints and ligaments at neck level applies to 75 codes
  • The appropriate 7th character is to be added to each code from category S13
Values for category S13 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter this code
  • Ssequela

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name S13.4XXD, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming S13.4XXD: they are not reported together with it, unless the two conditions are unrelated.

  • G24.3 Spasmodic torticollis
    traumatic recurrent torticollis (S13.4) names S13.4, which includes this code

Clinical ClassificationClinical

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

CCSR INJ061
Sprains and strains, subsequent encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Whiplash Injuries

    hyperextension injury to the neck, often the result of being struck from behind by a fast-moving vehicle, in an automobile accident. (from segen, the dictionary of modern medicine, 1992)

Patient EducationClinical

Neck Injuries and Disorders

Any part of your neck - muscles, bones, joints, tendons, ligaments, or nerves - can cause neck problems. Neck pain is very common. Pain may also come from your shoulder, jaw, head, or upper arms.

Read the full article at MedlinePlus

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

Convert S13.4XXD to ICD-9-CMHistory

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

ICD-9-CM
V58.89 Other specfied aftercare
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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About S13.4XXDOverview

What is the ICD-10 code for sprain of ligaments of cervical spine, subsequent encounter?

The ICD-10-CM code for sprain of ligaments of cervical spine, subsequent encounter is S13.4XXD (sometimes written as S134XXD). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is S13.4XXD (Sprain of ligaments of cervical spine) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report sprain of ligaments of cervical spine, subsequent encounter on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What does the 7th character D in S13.4XXD mean?

The final character D marks a subsequent encounter: use it for routine care while the sprain of ligaments of cervical spine is healing, after active treatment has ended.

What MS-DRG does S13.4XXD group to?

When sprain of ligaments of cervical spine, subsequent encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 950, 949, with relative weights from 0.7661 to 1.1231 depending on complications. Higher weights mean higher Medicare reimbursement.

Is S13.4XXD 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 sprain of ligaments of cervical spine, subsequent encounter on inpatient claims. The code appears in the Injuries to the neck (S10-S19) range of the CMS exempt list.