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  6. 2024 ICD-10-CM Code S79.9

2024 ICD-10-CM Diagnosis Code S79.9

Unspecified injury of hip and thigh

ICD-10-CM Code:
S79.9
ICD-10 Code for:
Unspecified injury of hip and thigh
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Injuries to the hip and thigh
      (S70-S79)
      • Other and unspecified injuries of hip and thigh
        (S79)

S79.9 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of unspecified injury of hip and thigh. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Unspecified diagnosis codes like S79.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Specific Coding Applicable to Unspecified injury of hip and thigh

Non-specific codes like S79.9 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for unspecified injury of hip and thigh:

  • S79.91 for Unspecified injury of hip - NON-BILLABLE CODE

  • S79.911 for Unspecified injury of right hip - NON-BILLABLE CODE

  • Use S79.911A for initial encounter - BILLABLE CODE

  • Use S79.911D for subsequent encounter - BILLABLE CODE

  • Use S79.911S for sequela - BILLABLE CODE

  • S79.912 for Unspecified injury of left hip - NON-BILLABLE CODE

  • Use S79.912A for initial encounter - BILLABLE CODE

  • Use S79.912D for subsequent encounter - BILLABLE CODE

  • Use S79.912S for sequela - BILLABLE CODE

  • S79.919 for Unspecified injury of unspecified hip - NON-BILLABLE CODE

  • Use S79.919A for initial encounter - BILLABLE CODE

  • Use S79.919D for subsequent encounter - BILLABLE CODE

  • Use S79.919S for sequela - BILLABLE CODE

  • S79.92 for Unspecified injury of thigh - NON-BILLABLE CODE

  • S79.921 for Unspecified injury of right thigh - NON-BILLABLE CODE

  • Use S79.921A for initial encounter - BILLABLE CODE

  • Use S79.921D for subsequent encounter - BILLABLE CODE

  • Use S79.921S for sequela - BILLABLE CODE

  • S79.922 for Unspecified injury of left thigh - NON-BILLABLE CODE

  • Use S79.922A for initial encounter - BILLABLE CODE

  • Use S79.922D for subsequent encounter - BILLABLE CODE

  • Use S79.922S for sequela - BILLABLE CODE

  • S79.929 for Unspecified injury of unspecified thigh - NON-BILLABLE CODE

  • Use S79.929A for initial encounter - BILLABLE CODE

  • Use S79.929D for subsequent encounter - BILLABLE CODE

  • Use S79.929S for sequela - BILLABLE CODE

Coding Guidelines

The appropriate 7th character is to be added to each code from block Other and unspecified injuries of hip and thigh (S79). Use the following options for the aplicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


7th Character Note

7th Character Note
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
  • The appropriate 7th character is to be added to each code in subcategory S79.9

7th Character

7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Patient Education


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. This makes your hips very stable and allows for a wide range of motion. When they are healthy, it takes great force to hurt them. However, playing sports, running, overuse, or falling can sometimes lead to hip injuries such as:

  • Strains
  • Bursitis
  • Dislocations
  • Fractures (broken bones)

Certain diseases also lead to hip injuries or problems. Osteoarthritis can cause pain and limited motion. Osteoporosis of the hip causes weak bones that break easily. Both of these are common in older people.

Another problem is hip dysplasia, where the ball at the end of the femur is loose in the hip socket. It can cause hip dislocation. Babies who have hip dysplasia are usually born with it, but sometimes they develop it later.

Treatment for hip disorders may include rest, medicines, physical therapy, or surgery, including hip replacement.


[Learn More in MedlinePlus]

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).

These injuries can affect the entire leg, or just the foot, ankle, knee, or hip. Certain diseases also lead to leg problems. For example, knee osteoarthritis, common in older people, can cause pain and limited motion. Problems in your veins in your legs can lead to varicose veins or deep vein thrombosis.


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.