2026 ICD-10-CM Diagnosis Code S59.901DUnspecified injury of right elbow, subsequent encounter
S59.901D is a billable ICD-10-CM diagnosis code for unspecified injury of right elbow, 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 injury of right elbow region. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other unspecified injuries, subsequent encounter.
Code Identity
Code Classification
Present on Admission (POA)Billing
S59.901D 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.
- Injury of right elbow region
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Other and unspecified injuries of elbow and forearm (S59). 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
Elbow Injuries and Disorders
Your elbow joint is made up of bone, cartilage, ligaments and fluid. Muscles and tendons help the elbow joint move. When any of these structures is hurt or diseased, you have elbow problems.
Read the full article at MedlinePlus
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Convert S59.901D to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S59.901DOverview
Is S59.901D (Unspecified injury of right elbow) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report unspecified injury of right elbow, subsequent encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character D in S59.901D mean?
The final character D marks a subsequent encounter: use it for routine care while the unspecified injury of right elbow is healing, after active treatment has ended.
What MS-DRG does S59.901D group to?
When unspecified injury of right elbow, 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 S59.901D 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 unspecified injury of right elbow, subsequent encounter on inpatient claims.
What is the ICD-9 equivalent of S59.901D?
Under the General Equivalence Mappings, unspecified injury of right elbow, 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.
