2026 ICD-10-CM Diagnosis Code S19.9XXAUnspecified injury of neck, initial encounter
S19.9XXA is a billable ICD-10-CM diagnosis code for unspecified injury of neck, initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 913 through 914, 963 through 965. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other unspecified injury.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Central cord syndrome of cervical spinal cord due to traumatic injury
- Head and neck injury
- Headache due to injury of head and neck
- Injury of anterior neck
- Injury of back of neck
- Injury of cervical region of back
- Injury of cervical spine
- Injury of face and neck
- Injury of head and/or neck
- Injury of neck
- Injury of upper respiratory tract
- Multiple injuries of neck
- Posttraumatic headache
- Traumatic injury of back of neck and trunk
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Other specified and unspecified injuries of neck (S19). 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 2026, published by CMS and the National Center for Health Statistics.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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
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Convert S19.9XXA to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S19.9XXAOverview
Is S19.9XXA (Unspecified injury of neck) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report unspecified injury of neck, initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character A in S19.9XXA mean?
The final character A marks the initial encounter: use it while the patient is receiving active treatment for unspecified injury of neck, such as an emergency visit or first evaluation.
What MS-DRG does S19.9XXA group to?
When unspecified injury of neck, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 913, 914, 963, 964, 965, with relative weights from 0.8855 to 2.7338 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of S19.9XXA?
Under the General Equivalence Mappings, unspecified injury of neck, initial encounter converts to ICD-9-CM 959.09 (face & neck injury). 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.
