2026 ICD-10-CM Diagnosis Code S64Injury of nerves at wrist and hand level

ICD-10-CM Codes›S00–T88›S60-S69›S64

ICD-10-CM S64
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S64 is a non-billable ICD-10-CM category code for injury of nerves at wrist and hand level, so it cannot be submitted on claims. Use a more specific code from this category instead, such as S64.00XA, S64.00XD, S64.00XS, and S64.01XA.

Code Identity

ICD-10-CM Code
S64
Billable Status
No — Non-Billable Category
Code Describes
Injury of nerves at wrist and hand level
Short Description
Injury of nerves at wrist and hand level
Same as the full description in the CMS dataset.
Chapter
S60-S69
Injuries to the wrist, hand and fingers

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS60-S69Injuries to the wrist, hand and fingers
CategoryS64Injury of nerves at wrist and hand level
This CodeS64Injury of nerves at wrist and hand level

Specific Coding for Injury of nerves at wrist and hand levelOverview

Non-specific codes like S64 require more characters. Use one of these billable codes instead:

  • S64.0 for Injury of ulnar nerve at wrist and hand level

  • S64.00 for Injury of ulnar nerve at wrist and hand level of unspecified arm

  • S64.01 for Injury of ulnar nerve at wrist and hand level of right arm

  • S64.02 for Injury of ulnar nerve at wrist and hand level of left arm

  • S64.1 for Injury of median nerve at wrist and hand level

  • S64.10 for Injury of median nerve at wrist and hand level of unspecified arm

  • S64.11 for Injury of median nerve at wrist and hand level of right arm

  • S64.12 for Injury of median nerve at wrist and hand level of left arm

  • S64.2 for Injury of radial nerve at wrist and hand level

  • S64.20 for Injury of radial nerve at wrist and hand level of unspecified arm

  • S64.21 for Injury of radial nerve at wrist and hand level of right arm

  • S64.22 for Injury of radial nerve at wrist and hand level of left arm

  • S64.3 for Injury of digital nerve of thumb

  • S64.30 for Injury of digital nerve of unspecified thumb

  • S64.31 for Injury of digital nerve of right thumb

  • S64.32 for Injury of digital nerve of left thumb

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

  • S64.40 for Injury of digital nerve of unspecified finger

  • S64.49 for Injury of digital nerve of other finger

  • S64.8 for Injury of other nerves at wrist and hand level

  • S64.8X for Injury of other nerves at wrist and hand level

  • S64.9 for Injury of unspecified nerve at wrist and hand level

  • S64.90 for Injury of unspecified nerve at wrist and hand level of unspecified arm

  • S64.91 for Injury of unspecified nerve at wrist and hand level of right arm

  • S64.92 for Injury of unspecified nerve at wrist and hand level of left arm

Coding GuidelinesGuidance

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 applicable episode of care:

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

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Code Also

  • any associated open wound S61

7th Character Note

  • The appropriate 7th character is to be added to each code from category S64

7th Character

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

Patient EducationClinical

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.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About S64Overview

Is S64 (Injury of nerves at wrist and hand level) a billable code?

No. This is a category header that groups the codes for injury of nerves at wrist and hand level, and headers cannot be submitted on claims. Claims for injury of nerves at wrist and hand level need a more specific code from this category, such as S64.00XA, S64.00XD, and S64.00XS.