2021 ICD-10-CM Code S64

Injury of nerves at wrist and hand level

Version 2021
Non-Billable Code

Not Valid for Submission

S64 is a "header" nonspecific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of injury of nerves at wrist and hand level. The code is NOT valid for the year 2021 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.

ICD-10:S64
Short Description:Injury of nerves at wrist and hand level
Long Description:Injury of nerves at wrist and hand level

Code Classification

Specific Coding for Injury of nerves at wrist and hand level

Header codes like S64 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for injury of nerves at wrist and hand level:

  • S64.0 - Injury of ulnar nerve at wrist and hand level
  • S64.00 - Injury of ulnar nerve at wrist and hand level of unspecified arm
  • S64.00XA - Injury of ulnar nerve at wrist and hand level of unspecified arm, initial encounter
  • S64.00XD - Injury of ulnar nerve at wrist and hand level of unspecified arm, subsequent encounter
  • S64.00XS - Injury of ulnar nerve at wrist and hand level of unspecified arm, sequela
  • S64.01 - Injury of ulnar nerve at wrist and hand level of right arm
  • S64.01XA - Injury of ulnar nerve at wrist and hand level of right arm, initial encounter
  • S64.01XD - Injury of ulnar nerve at wrist and hand level of right arm, subsequent encounter
  • S64.01XS - Injury of ulnar nerve at wrist and hand level of right arm, sequela
  • S64.02 - Injury of ulnar nerve at wrist and hand level of left arm
  • S64.02XA - Injury of ulnar nerve at wrist and hand level of left arm, initial encounter
  • S64.02XD - Injury of ulnar nerve at wrist and hand level of left arm, subsequent encounter
  • S64.02XS - Injury of ulnar nerve at wrist and hand level of left arm, sequela
  • S64.1 - Injury of median nerve at wrist and hand level
  • S64.10 - Injury of median nerve at wrist and hand level of unspecified arm
  • S64.10XA - Injury of median nerve at wrist and hand level of unspecified arm, initial encounter
  • S64.10XD - Injury of median nerve at wrist and hand level of unspecified arm, subsequent encounter
  • S64.10XS - Injury of median nerve at wrist and hand level of unspecified arm, sequela
  • S64.11 - Injury of median nerve at wrist and hand level of right arm
  • S64.11XA - Injury of median nerve at wrist and hand level of right arm, initial encounter
  • S64.11XD - Injury of median nerve at wrist and hand level of right arm, subsequent encounter
  • S64.11XS - Injury of median nerve at wrist and hand level of right arm, sequela
  • S64.12 - Injury of median nerve at wrist and hand level of left arm
  • S64.12XA - Injury of median nerve at wrist and hand level of left arm, initial encounter
  • S64.12XD - Injury of median nerve at wrist and hand level of left arm, subsequent encounter
  • S64.12XS - Injury of median nerve at wrist and hand level of left arm, sequela
  • S64.2 - Injury of radial nerve at wrist and hand level
  • S64.20 - Injury of radial nerve at wrist and hand level of unspecified arm
  • S64.20XA - Injury of radial nerve at wrist and hand level of unspecified arm, initial encounter
  • S64.20XD - Injury of radial nerve at wrist and hand level of unspecified arm, subsequent encounter
  • S64.20XS - Injury of radial nerve at wrist and hand level of unspecified arm, sequela
  • S64.21 - Injury of radial nerve at wrist and hand level of right arm
  • S64.21XA - Injury of radial nerve at wrist and hand level of right arm, initial encounter
  • S64.21XD - Injury of radial nerve at wrist and hand level of right arm, subsequent encounter
  • S64.21XS - Injury of radial nerve at wrist and hand level of right arm, sequela
  • S64.22 - Injury of radial nerve at wrist and hand level of left arm
  • S64.22XA - Injury of radial nerve at wrist and hand level of left arm, initial encounter
  • S64.22XD - Injury of radial nerve at wrist and hand level of left arm, subsequent encounter
  • S64.22XS - Injury of radial nerve at wrist and hand level of left arm, sequela
  • S64.3 - Injury of digital nerve of thumb
  • S64.30 - Injury of digital nerve of unspecified thumb
  • S64.30XA - Injury of digital nerve of unspecified thumb, initial encounter
  • S64.30XD - Injury of digital nerve of unspecified thumb, subsequent encounter
  • S64.30XS - Injury of digital nerve of unspecified thumb, sequela
  • S64.31 - Injury of digital nerve of right thumb
  • S64.31XA - Injury of digital nerve of right thumb, initial encounter
  • S64.31XD - Injury of digital nerve of right thumb, subsequent encounter
  • S64.31XS - Injury of digital nerve of right thumb, sequela
  • S64.32 - Injury of digital nerve of left thumb
  • S64.32XA - Injury of digital nerve of left thumb, initial encounter
  • S64.32XD - Injury of digital nerve of left thumb, subsequent encounter
  • S64.32XS - Injury of digital nerve of left thumb, sequela
  • S64.4 - Injury of digital nerve of other and unspecified finger
  • S64.40 - Injury of digital nerve of unspecified finger
  • S64.40XA - Injury of digital nerve of unspecified finger, initial encounter
  • S64.40XD - Injury of digital nerve of unspecified finger, subsequent encounter
  • S64.40XS - Injury of digital nerve of unspecified finger, sequela
  • S64.49 - Injury of digital nerve of other finger
  • S64.490 - Injury of digital nerve of right index finger
  • S64.490A - Injury of digital nerve of right index finger, initial encounter
  • S64.490D - Injury of digital nerve of right index finger, subsequent encounter
  • S64.490S - Injury of digital nerve of right index finger, sequela
  • S64.491 - Injury of digital nerve of left index finger
  • S64.491A - Injury of digital nerve of left index finger, initial encounter
  • S64.491D - Injury of digital nerve of left index finger, subsequent encounter
  • S64.491S - Injury of digital nerve of left index finger, sequela
  • S64.492 - Injury of digital nerve of right middle finger
  • S64.492A - Injury of digital nerve of right middle finger, initial encounter
  • S64.492D - Injury of digital nerve of right middle finger, subsequent encounter
  • S64.492S - Injury of digital nerve of right middle finger, sequela
  • S64.493 - Injury of digital nerve of left middle finger
  • S64.493A - Injury of digital nerve of left middle finger, initial encounter
  • S64.493D - Injury of digital nerve of left middle finger, subsequent encounter
  • S64.493S - Injury of digital nerve of left middle finger, sequela
  • S64.494 - Injury of digital nerve of right ring finger
  • S64.494A - Injury of digital nerve of right ring finger, initial encounter
  • S64.494D - Injury of digital nerve of right ring finger, subsequent encounter
  • S64.494S - Injury of digital nerve of right ring finger, sequela
  • S64.495 - Injury of digital nerve of left ring finger
  • S64.495A - Injury of digital nerve of left ring finger, initial encounter
  • S64.495D - Injury of digital nerve of left ring finger, subsequent encounter
  • S64.495S - Injury of digital nerve of left ring finger, sequela
  • S64.496 - Injury of digital nerve of right little finger
  • S64.496A - Injury of digital nerve of right little finger, initial encounter
  • S64.496D - Injury of digital nerve of right little finger, subsequent encounter
  • S64.496S - Injury of digital nerve of right little finger, sequela
  • S64.497 - Injury of digital nerve of left little finger
  • S64.497A - Injury of digital nerve of left little finger, initial encounter
  • S64.497D - Injury of digital nerve of left little finger, subsequent encounter
  • S64.497S - Injury of digital nerve of left little finger, sequela
  • S64.498 - Injury of digital nerve of other finger
  • S64.498A - Injury of digital nerve of other finger, initial encounter
  • S64.498D - Injury of digital nerve of other finger, subsequent encounter
  • S64.498S - Injury of digital nerve of other finger, sequela
  • S64.8 - Injury of other nerves at wrist and hand level
  • S64.8X - Injury of other nerves at wrist and hand level
  • S64.8X1 - Injury of other nerves at wrist and hand level of right arm
  • S64.8X1A - Injury of other nerves at wrist and hand level of right arm, initial encounter
  • S64.8X1D - Injury of other nerves at wrist and hand level of right arm, subsequent encounter
  • S64.8X1S - Injury of other nerves at wrist and hand level of right arm, sequela
  • S64.8X2 - Injury of other nerves at wrist and hand level of left arm
  • S64.8X2A - Injury of other nerves at wrist and hand level of left arm, initial encounter
  • S64.8X2D - Injury of other nerves at wrist and hand level of left arm, subsequent encounter
  • S64.8X2S - Injury of other nerves at wrist and hand level of left arm, sequela
  • S64.8X9 - Injury of other nerves at wrist and hand level of unspecified arm
  • S64.8X9A - Injury of other nerves at wrist and hand level of unspecified arm, initial encounter
  • S64.8X9D - Injury of other nerves at wrist and hand level of unspecified arm, subsequent encounter
  • S64.8X9S - Injury of other nerves at wrist and hand level of unspecified arm, sequela
  • S64.9 - Injury of unspecified nerve at wrist and hand level
  • S64.90 - Injury of unspecified nerve at wrist and hand level of unspecified arm
  • S64.90XA - Injury of unspecified nerve at wrist and hand level of unspecified arm, initial encounter
  • S64.90XD - Injury of unspecified nerve at wrist and hand level of unspecified arm, subsequent encounter
  • S64.90XS - Injury of unspecified nerve at wrist and hand level of unspecified arm, sequela
  • S64.91 - Injury of unspecified nerve at wrist and hand level of right arm
  • S64.91XA - Injury of unspecified nerve at wrist and hand level of right arm, initial encounter
  • S64.91XD - Injury of unspecified nerve at wrist and hand level of right arm, subsequent encounter
  • S64.91XS - Injury of unspecified nerve at wrist and hand level of right arm, sequela
  • S64.92 - Injury of unspecified nerve at wrist and hand level of left arm
  • S64.92XA - Injury of unspecified nerve at wrist and hand level of left arm, initial encounter
  • S64.92XD - Injury of unspecified nerve at wrist and hand level of left arm, subsequent encounter
  • S64.92XS - Injury of unspecified nerve at wrist and hand level of left arm, sequela

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code S64:


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.

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.

7th Character

7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.

Information for Patients


Hand Injuries and Disorders

No matter how old you are or what you do for a living, you are always using your hands. When there is something wrong with them, you may not be able to do your regular activities.

Hand problems include


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Peripheral Nerve Disorders

Also called: Neuritis, Peripheral neuritis, Peripheral neuropathy

Your peripheral nerves are the ones outside your brain and spinal cord. Like static on a telephone line, peripheral nerve disorders distort or interrupt the messages between the brain and the rest of the body.

There are more than 100 kinds of peripheral nerve disorders. They can affect one nerve or many nerves. Some are the result of other diseases, like diabetic nerve problems. Others, like Guillain-Barre syndrome, happen after a virus infection. Still others are from nerve compression, like carpal tunnel syndrome or thoracic outlet syndrome. In some cases, like complex regional pain syndrome and brachial plexus injuries, the problem begins after an injury. Some people are born with peripheral nerve disorders.

Symptoms often start gradually, and then get worse. They include

Treatment aims to treat any underlying problem, reduce pain and control symptoms.

NIH: National Institute of Neurological Disorders and Stroke


[Learn More]

Wrist Injuries and Disorders

Your wrist is made up of eight small bones known as carpals. They support a tube that runs through your wrist. That tube, called the carpal tunnel, has tendons and a nerve inside. It is covered by a ligament, which holds it in place.

Wrist pain is common. Repetitive motion can damage your wrist. Everyday activities like typing, racquet sports or sewing can cause pain, or even carpal tunnel syndrome. Wrist pain with bruising and swelling can be a sign of injury. The signs of a possible fracture include misshapen joints and inability to move your wrist. Some wrist fractures are a result of osteoporosis.

Other common causes of pain are


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Code History

  • 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 (First year ICD-10-CM implemented into the HIPAA code set)