2024 ICD-10-CM Diagnosis Code S64.4

Injury of digital nerve of other and unspecified finger

ICD-10-CM Code:
S64.4
ICD-10 Code for:
Injury of digital nerve of other and unspecified finger
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Injuries to the wrist, hand and fingers
      (S60-S69)
      • Injury of nerves at wrist and hand level
        (S64)

S64.4 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 digital nerve of other and unspecified finger. 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 S64.4 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 Injury of digital nerve of other and unspecified finger

Non-specific codes like S64.4 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 digital nerve of other and unspecified finger:

  • S64.40 for Injury of digital nerve of unspecified finger - NON-BILLABLE CODE

  • Use S64.40XA for initial encounter - BILLABLE CODE

  • Use S64.40XD for subsequent encounter - BILLABLE CODE

  • Use S64.40XS for sequela - BILLABLE CODE

  • S64.49 for Injury of digital nerve of other finger - NON-BILLABLE CODE

  • S64.490 for Injury of digital nerve of right index finger - NON-BILLABLE CODE

  • Use S64.490A for initial encounter - BILLABLE CODE

  • Use S64.490D for subsequent encounter - BILLABLE CODE

  • Use S64.490S for sequela - BILLABLE CODE

  • S64.491 for Injury of digital nerve of left index finger - NON-BILLABLE CODE

  • Use S64.491A for initial encounter - BILLABLE CODE

  • Use S64.491D for subsequent encounter - BILLABLE CODE

  • Use S64.491S for sequela - BILLABLE CODE

  • S64.492 for Injury of digital nerve of right middle finger - NON-BILLABLE CODE

  • Use S64.492A for initial encounter - BILLABLE CODE

  • Use S64.492D for subsequent encounter - BILLABLE CODE

  • Use S64.492S for sequela - BILLABLE CODE

  • S64.493 for Injury of digital nerve of left middle finger - NON-BILLABLE CODE

  • Use S64.493A for initial encounter - BILLABLE CODE

  • Use S64.493D for subsequent encounter - BILLABLE CODE

  • Use S64.493S for sequela - BILLABLE CODE

  • S64.494 for Injury of digital nerve of right ring finger - NON-BILLABLE CODE

  • Use S64.494A for initial encounter - BILLABLE CODE

  • Use S64.494D for subsequent encounter - BILLABLE CODE

  • Use S64.494S for sequela - BILLABLE CODE

  • S64.495 for Injury of digital nerve of left ring finger - NON-BILLABLE CODE

  • Use S64.495A for initial encounter - BILLABLE CODE

  • Use S64.495D for subsequent encounter - BILLABLE CODE

  • Use S64.495S for sequela - BILLABLE CODE

  • S64.496 for Injury of digital nerve of right little finger - NON-BILLABLE CODE

  • Use S64.496A for initial encounter - BILLABLE CODE

  • Use S64.496D for subsequent encounter - BILLABLE CODE

  • Use S64.496S for sequela - BILLABLE CODE

  • S64.497 for Injury of digital nerve of left little finger - NON-BILLABLE CODE

  • Use S64.497A for initial encounter - BILLABLE CODE

  • Use S64.497D for subsequent encounter - BILLABLE CODE

  • Use S64.497S for sequela - BILLABLE CODE

  • S64.498 for Injury of digital nerve of other finger - NON-BILLABLE CODE

  • Use S64.498A for initial encounter - BILLABLE CODE

  • Use S64.498D for subsequent encounter - BILLABLE CODE

  • Use S64.498S for sequela - BILLABLE CODE

Coding Guidelines

The appropriate 7th character is to be added to each code from block Injury of nerves at wrist and hand level (S64). Use the following options for the aplicable episode of care:

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

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Patient Education


Finger Injuries and Disorders

You use your fingers and thumbs to do everything from grasping objects to playing musical instruments to typing. When there is something wrong with them, it can make life difficult. Common problems include:

  • Injuries that result in fractures (broken bones), ruptured ligaments and dislocations
  • Osteoarthritis - wear-and-tear arthritis. It can also cause deformity.
  • Tendinitis - irritation of the tendons
  • Dupuytren's contracture - a hereditary thickening of the tough tissue that lies just below the skin of your palm. It causes the fingers to stiffen and bend.
  • Trigger finger - an irritation of the sheath that surrounds the flexor tendons. It can cause the tendon to catch and release like a trigger.

[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.