ICD-10-CM Tabular Index · Chapter 19 · FY 2026 S64

Injury of nerves at wrist and hand level (S64) ICD-10-CM

The S64 code range covers injury of nerves at wrist and hand level with 122 ICD-10-CM diagnosis codes. 84 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.

✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
122
Diagnosis Codes
84
Billable Codes
S64
Code Range
S60–S69
Parent Section

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

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

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

ICD-10-CM

Codes in the S64 Range 122 codes · 84 billable

122 of 122 shown
  • S64 Injury of nerves at wrist and hand levelNon-billable
  • S64.0 Injury of ulnar nerve at wrist and hand levelNon-billable
  • S64.00 Injury of ulnar nerve at wrist and hand level of unspecified armNon-billable
  • 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 armNon-billable
  • 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 armNon-billable
  • 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 levelNon-billable
  • S64.10 Injury of median nerve at wrist and hand level of unspecified armNon-billable
  • 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 armNon-billable
  • 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 armNon-billable
  • 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 levelNon-billable
  • S64.20 Injury of radial nerve at wrist and hand level of unspecified armNon-billable
  • 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 armNon-billable
  • 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 armNon-billable
  • 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 thumbNon-billable
  • S64.30 Injury of digital nerve of unspecified thumbNon-billable
  • 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 thumbNon-billable
  • 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 thumbNon-billable
  • 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 fingerNon-billable
  • S64.40 Injury of digital nerve of unspecified fingerNon-billable
  • 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 fingerNon-billable
  • S64.490 Injury of digital nerve of right index fingerNon-billable
  • 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 fingerNon-billable
  • 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 fingerNon-billable
  • 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 fingerNon-billable
  • 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 fingerNon-billable
  • 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 fingerNon-billable
  • 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 fingerNon-billable
  • 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 fingerNon-billable
  • 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 fingerNon-billable
  • 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 levelNon-billable
  • S64.8X Injury of other nerves at wrist and hand levelNon-billable
  • S64.8X1 Injury of other nerves at wrist and hand level of right armNon-billable
  • 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 armNon-billable
  • 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 armNon-billable
  • 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 levelNon-billable
  • S64.90 Injury of unspecified nerve at wrist and hand level of unspecified armNon-billable
  • 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 armNon-billable
  • 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 armNon-billable
  • 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

About the S64 Code Range

ICD-10 code S64 covers injuries to nerves located at the wrist and hand level. These codes specify damage to particular nerves such as the ulnar, median, radial, and digital nerves, with subcodes detailing the specific arm side (right, left, or unspecified) and the stage of care (initial encounter, subsequent encounter, or sequela).

This section is used when coding injuries involving nerve trauma at the wrist and hand. For example, an injury to the ulnar nerve at the wrist—also referred to by terms like ulnar neuropathy at wrist or injury of cutaneous sensory nerve of upper limb—is coded under S64.00 and its variants, which differentiate by side and encounter type. Similarly, injuries to the median nerve (sometimes called injury of the median nerve in the wrist or hand) are captured under S64.1 codes, while radial nerve injuries (described likewise as injury of radial nerve at wrist level) use S64.2 codes. Specific codes under the S64.3 and S64.4 categories refer to injuries of the digital nerves of the thumb or other fingers, including detailed coding by finger and laterality. The section also includes codes for injury of other or unspecified nerves at this level under S64.8 and S64.9. These codes assist medical professionals and coders to precisely document nerve injuries at the wrist and hand, facilitating accurate clinical recording and communication.

Questions About This Page

How many billable codes are in the S64 range?

Of the 122 codes in this range, 84 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.

What does the S64 range classify?

The range classifies injury of nerves at wrist and hand level. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.

Related References

All ICD-10-CM ChaptersAll of Chapter 19ICD-10-CM Code LookupMS-DRG ReferenceMedicare Code EditsPOA Exempt Codes

Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.