2026 ICD-10-CM Diagnosis Code S71.109SUnspecified open wound, unspecified thigh, sequela
S71.109S is a billable ICD-10-CM diagnosis code for unspecified open wound, unspecified thigh, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 604 through 605. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
S71.109S 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.
- Glass in thigh
- Injury of lateral cutaneous nerve of thigh
- Lateral cutaneous nerve of thigh lesion
- Multiple fractures of femur
- Multiple open fractures of lower end of femur
- Multiple open wounds of hip and/or thigh
- Multiple open wounds of lower limb
- Multiple open wounds of thigh
- Obturator nerve injury
- Obturator neuropathy
- Open comminuted supracondylar fracture of femur
- Open fracture distal femur, bicondylar
- Open fracture distal femur, comminuted/intra-articular
- Open fracture distal femur, lateral condyle
- Open fracture distal femur, medial condyle
- Open fracture of apophysis of femur
- Open fracture of epiphysis of femur
- Open fracture of femoral condyle of femur
- Open fracture of femur
- Open fracture of femur, distal end
- Open fracture of femur, lower epiphysis
- Open fracture of head of femur
- Open fracture proximal femur, transepiphyseal
- Open injury lateral cutaneous nerve thigh
- Open injury obturator nerve
- Open subcapital fracture of femur
- Open subcapital fracture of proximal femur Garden grade I
- Open subcapital fracture of proximal femur Garden grade II
- Open subcapital fracture of proximal femur Garden grade III
- Open subcapital fracture of proximal femur Garden grade IV
- Open supracondylar fracture of femur
- Open wound of thigh
- Supracondylar fracture femur
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Open wound of hip and thigh (S71). 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
Leg Injuries and Disorders
Your legs are made up of bones, blood vessels, muscles, and other connective tissue. They are important for motion and standing. Playing sports, running, falling, or having an accident can damage your legs. Common leg injuries include sprains and strains, joint dislocations, and fractures (broken bones).
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert S71.109S to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S71.109SOverview
Is S71.109S (Unspecified open wound, unspecified thigh) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report unspecified open wound, unspecified thigh, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in S71.109S mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the unspecified open wound, unspecified thigh itself has resolved, not the original event.
What MS-DRG does S71.109S group to?
When unspecified open wound, unspecified thigh, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 604, 605, with relative weights from 0.9160 to 1.4721 depending on complications. Higher weights mean higher Medicare reimbursement.
Is S71.109S 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 open wound, unspecified thigh, sequela on inpatient claims.
What is the ICD-9 equivalent of S71.109S?
Under the General Equivalence Mappings, unspecified open wound, unspecified thigh, sequela converts to ICD-9-CM 906.1 (late eff open wnd extrem). 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.
