2026 ICD-10-CM Diagnosis Code S73.111AIliofemoral ligament sprain of right hip, initial encounter
S73.111A is a billable ICD-10-CM diagnosis code for iliofemoral ligament sprain of right hip, 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 537 through 538, 963 through 965. Coders also document this condition as disorder of ligament of right hip joint. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Sprains and strains, initial encounter.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Disorder of ligament of right hip joint
- Sprain of hip
- Sprain of iliofemoral ligament
- Sprain of right hip
- Sprain of right iliofemoral ligament
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Dislocation and sprain of joint and ligaments of hip (S73). 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
Hip Injuries and Disorders
Your hip is the joint where your femur (thigh bone) meets your pelvis (hip bone). There are two main parts: a ball at the end of the femur, which fits in a socket in the pelvis. Your hip is known as a ball-and-socket joint. This is because you have a ball at the end of your femur, and it fits into a socket in your pelvis.
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Convert S73.111A to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S73.111AOverview
Is S73.111A (Iliofemoral ligament sprain of right hip) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report iliofemoral ligament sprain of right hip, initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character A in S73.111A mean?
The final character A marks the initial encounter: use it while the patient is receiving active treatment for iliofemoral ligament sprain of right hip, such as an emergency visit or first evaluation.
What MS-DRG does S73.111A group to?
When iliofemoral ligament sprain of right hip, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 537, 538, 963, 964, 965, with relative weights from 0.7203 to 2.7338 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of S73.111A?
Under the General Equivalence Mappings, iliofemoral ligament sprain of right hip, initial encounter converts to ICD-9-CM 843.0 (sprain iliofemoral). 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.
