Version 2024

2024 ICD-10-CM Diagnosis Code S09.1

Injury of muscle and tendon of head

ICD-10-CM Code:
S09.1
ICD-10 Code for:
Injury of muscle and tendon of head
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Injuries to the head
      (S00-S09)
      • Other and unspecified injuries of head
        (S09)

S09.1 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of injury of muscle and tendon of head. 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.

Specific Coding Applicable to Injury of muscle and tendon of head

Non-specific codes like S09.1 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 injury of muscle and tendon of head:

  • S09.10 for Unspecified injury of muscle and tendon of head - NON-BILLABLE CODE

  • Use S09.10XA for initial encounter - BILLABLE CODE

  • Use S09.10XD for subsequent encounter - BILLABLE CODE

  • Use S09.10XS for sequela - BILLABLE CODE

  • S09.11 for Strain of muscle and tendon of head - NON-BILLABLE CODE

  • Use S09.11XA for initial encounter - BILLABLE CODE

  • Use S09.11XD for subsequent encounter - BILLABLE CODE

  • Use S09.11XS for sequela - BILLABLE CODE

  • S09.12 for Laceration of muscle and tendon of head - NON-BILLABLE CODE

  • Use S09.12XA for initial encounter - BILLABLE CODE

  • Use S09.12XD for subsequent encounter - BILLABLE CODE

  • Use S09.12XS for sequela - BILLABLE CODE

  • S09.19 for Other specified injury of muscle and tendon of head - NON-BILLABLE CODE

  • Use S09.19XA for initial encounter - BILLABLE CODE

  • Use S09.19XD for subsequent encounter - BILLABLE CODE

  • Use S09.19XS for sequela - BILLABLE CODE

Coding Guidelines

The appropriate 7th character is to be added to each code from block Other and unspecified injuries of head (S09). 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.


Code Also

Code Also
A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
  • any associated open wound S01

Type 2 Excludes

Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • sprain to joints and ligament of head S03.9

Patient Education


Head Injuries

Chances are you've bumped your head before. Often, the injury is minor because your skull is hard and it protects your brain. But other head injuries can be more severe, such as a skull fracture, concussion, or traumatic brain injury.

Head injuries can be open or closed. A closed injury does not break through the skull. With an open, or penetrating, injury, an object pierces the skull and enters the brain. Closed injuries are not always less severe than open injuries.

Some common causes of head injuries are falls, motor vehicle accidents, violence, and sports injuries.

It is important to know the warning signs of a moderate or severe head injury. Get help immediately if the injured person has:

  • A headache that gets worse or does not go away
  • Repeated vomiting or nausea
  • Convulsions or seizures
  • An inability to wake up
  • Dilated (enlarged) pupil in one or both eyes
  • Slurred speech
  • Weakness or numbness in the arms or legs
  • Loss of coordination
  • Increased confusion, restlessness, or agitation

Doctors use a neurologic exam and imaging tests to make a diagnosis. Treatment depends on the type of injury and how severe it is.

NIH: National Institute of Neurological Disorders and Stroke


[Learn More in MedlinePlus]

Muscle Disorders

Your muscles help you move and help your body work. Different types of muscles have different jobs. There are many problems that can affect muscles. Muscle disorders can cause weakness, pain or even paralysis.

Causes of muscle disorders include:

  • Injury or overuse, such as sprains or strains, cramps or tendinitis
  • A genetic disorder, such as muscular dystrophy
  • Some cancers
  • Inflammation, such as myositis
  • Diseases of nerves that affect muscles
  • Infections
  • Certain medicines

Sometimes the cause of muscle disorders is unknown.


[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.