ICD-10 Code S66.396

Other injury of extensor muscle, fascia and tendon of right little finger at wrist and hand level

Version 2019 Non-Billable Code
ICD-10:S66.396
Short Description:Inj extensor musc/fasc/tend r little finger at wrs/hnd lv
Long Description:Other injury of extensor muscle, fascia and tendon of right little finger at wrist and hand level

Not Valid for Submission

ICD-10 S66.396 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of other injury of extensor muscle, fascia and tendon of right little finger at wrist and hand level. The code is NOT valid for the year 2019 for the submission of HIPAA-covered transactions.

Consider the following ICD-10 codes with a higher level of specificity:

  • S66.396A - Other injury of extensor muscle, fascia and tendon of right little finger at wrist and hand level, initial encounter
  • S66.396D - Other injury of extensor muscle, fascia and tendon of right little finger at wrist and hand level, subsequent encounter
  • S66.396S - Other injury of extensor muscle, fascia and tendon of right little finger at wrist and hand level, sequela

Code Classification

  • Injury, poisoning and certain other consequences of external causes (S00–T98)
    • Injuries to the wrist, hand and fingers (S60-S69)
      • Injury of muscle, fascia and tendon at wrist and hand level (S66)

Information for Medical Professionals

Diagnostic Related Groups

The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). The diagnosis code S66.396 is grouped in the following groups for version MS-DRG V36.0 applicable from 10/01/2018 through 09/30/2019.

  • 913 - TRAUMATIC INJURY WITH MCC
  • 913 - TRAUMATIC INJURY WITH MCC
  • 914 - TRAUMATIC INJURY WITHOUT MCC
  • 914 - TRAUMATIC INJURY WITHOUT MCC
  • 949 - AFTERCARE WITH CC/MCC
  • 950 - AFTERCARE WITHOUT CC/MCC

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

  • Carpal tunnel syndrome - compression of a nerve as it goes through the wrist, often making your fingers feel numb
  • Injuries that result in fractures, ruptured ligaments and dislocations
  • Osteoarthritis - wear-and-tear arthritis, which can also cause deformity
  • Tendinitis - irritation of the tendons
  • Disorders and injuries of your fingers and thumb
  • Brachial plexopathy (Medical Encyclopedia)
  • Claw hand (Medical Encyclopedia)
  • Dupuytrens contracture (Medical Encyclopedia)
  • Hand fracture - aftercare (Medical Encyclopedia)
  • Hand or foot spasms (Medical Encyclopedia)
  • Hand x-ray (Medical Encyclopedia)
  • Radial nerve dysfunction (Medical Encyclopedia)
  • Ulnar nerve dysfunction (Medical Encyclopedia)

[Read 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

  • Sprains and strains
  • Tendinitis
  • Arthritis
  • Gout and pseudogout
  • Colles wrist fracture - aftercare (Medical Encyclopedia)
  • De Quervain tendinitis (Medical Encyclopedia)
  • Wrist arthroscopy (Medical Encyclopedia)
  • Wrist pain (Medical Encyclopedia)
  • Wrist sprain - aftercare (Medical Encyclopedia)

[Read More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.