2026 ICD-10-CM Diagnosis Code S43.149DInferior dislocation of unspecified acromioclavicular joint, subsequent encounter
S43.149D is a billable ICD-10-CM diagnosis code for inferior dislocation of unspecified acromioclavicular joint, 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Dislocations, subsequent encounter.
Code Identity
Code Classification
Present on Admission (POA)Billing
S43.149D is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Dislocation and sprain of joints and ligaments of shoulder girdle (S43). 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
Dislocated Shoulder
Your shoulder joint is made up of three bones: your collarbone, your shoulder blade, and your upper arm bone. The top of your upper arm bone is shaped like a ball. This ball fits into a cuplike socket in your shoulder blade. A shoulder dislocation is an injury that happens when the ball pops out of your socket.
The full article covers:
- What is a dislocated shoulder?
- What causes a dislocated shoulder?
- Who is at risk for a dislocated shoulder?
- What are the symptoms of a dislocated shoulder?
- How is a dislocated shoulder diagnosed?
- What are the treatments for a dislocated shoulder?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert S43.149D to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S43.149DOverview
Is S43.149D (Inferior dislocation of unspecified acromioclavicular joint) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report inferior dislocation of unspecified acromioclavicular joint, subsequent encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character D in S43.149D mean?
The final character D marks a subsequent encounter: use it for routine care while the inferior dislocation of unspecified acromioclavicular joint is healing, after active treatment has ended.
What MS-DRG does S43.149D group to?
When inferior dislocation of unspecified acromioclavicular joint, 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 S43.149D 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 inferior dislocation of unspecified acromioclavicular joint, subsequent encounter on inpatient claims.
What is the ICD-9 equivalent of S43.149D?
Under the General Equivalence Mappings, inferior dislocation of unspecified acromioclavicular joint, 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.
