2026 ICD-10-CM Diagnosis Code S03.43XDSprain of jaw, bilateral, subsequent encounter

ICD-10-CM Codes›S00–T88›S00-S09›S03

ICD-10-CM S03.43XD
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S03.43XD is a billable ICD-10-CM diagnosis code for sprain of jaw, bilateral, 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 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 949 through 950. The code is exempt from POA reporting. Coders also document this condition as bilateral jaw sprain. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Any dental condition including traumatic injury; and Sprains and strains, subsequent encounter.

Code Identity

ICD-10-CM Code
S03.43XD
Billable Status
Yes — Valid for Submission
Code Describes
Sprain of jaw, bilateral, subsequent encounter
Short Description
Sprain of jaw, bilateral, subsequent encounter
Same as the full description in the CMS dataset.
Parent Code
S03.43
Sprain of jaw, bilateral

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS00-S09Injuries to the head
CategoryS03Dislocation and sprain of joints and ligaments of head
This CodeS03.43XDSprain of jaw, bilateral, subsequent encounter

Present on Admission (POA)Billing

S03.43XD 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.

  • Bilateral jaw sprain
  • Left jaw sprain
  • Right jaw sprain
  • Sprain of jaw

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Dislocation and sprain of joints and ligaments of head (S03). 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.

CCSR DEN001
Any dental condition including traumatic injury
Default principal diagnosis: inpatient No · outpatient No
CCSR INJ061
Sprains and strains, subsequent encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Jaw Injuries and Disorders

Your jaw is a set of bones that holds your teeth. It includes:

Read the full article at MedlinePlus

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

Convert S03.43XD 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 History & ChangesHistory

Replacement S03.43XD replaces the following previously assigned code(s):

  • S03.4XXD - Sprain of jaw, subsequent encounter
FY 2018AddedAdded to the ICD-10-CM code setEffective October 1, 2017.
FY 2019–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About S03.43XDOverview

Is S03.43XD (Sprain of jaw, bilateral) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report sprain of jaw, bilateral, subsequent encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character D in S03.43XD mean?

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

What MS-DRG does S03.43XD group to?

When sprain of jaw, bilateral, subsequent encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 949, 950, with relative weights from 0.6277 to 1.1897 depending on complications. Higher weights mean higher Medicare reimbursement.

Is S03.43XD 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 jaw, bilateral, subsequent encounter on inpatient claims.

What is the ICD-9 equivalent of S03.43XD?

Under the General Equivalence Mappings, sprain of jaw, bilateral, subsequent encounter converts to ICD-9-CM V58.89 (other specfied aftercare). 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.