Skip to main content
ICD-10/S64

S64 ICD-10-CM Code: Injury of nerves at wrist and hand level

Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Injury of nerves at wrist and hand level is a non-billable ICD-10-CM category code (S64). A more specific billable subcode must be selected for claims submission.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for S64 in the official ICD-10-CM tabular list.

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

  • burns and corrosions (T20-T32)
  • frostbite (T33-T34)
  • insect bite or sting, venomous (T63.4)

Code Also

Additional codes that may be required to fully describe the encounter.

  • any associated open wound (S61.-)

Frequently Asked Questions (FAQ) & Clinical Guidance

Can S64 be billed directly?

No. S64 (Injury of nerves at wrist and hand level) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.

Does S64 require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category S64; A: initial encounter; D: subsequent encounter; S: sequela.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to S64 in its code family, with their registry titles.

  • 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