S64 – Injury of nerves at wrist and hand level

ICD-10-CM 2027 diagnosis code · Injuries to the wrist, hand and fingers

Non-billable header

ICD-10-CM code S64

Code: S64 (claims format: S64)
Description: Injury of nerves at wrist and hand level
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
Block: S60-S69 Injuries to the wrist, hand and fingers

Billable codes under S64

S64 is a header code and cannot be used on claims. Choose the most specific code:

S64.0 – Injury of ulnar nerve at wrist and hand levelHeader (more codes below)
S64.1 – Injury of median nerve at wrist and hand levelHeader (more codes below)
S64.2 – Injury of radial nerve at wrist and hand levelHeader (more codes below)
S64.3 – Injury of digital nerve of thumbHeader (more codes below)
S64.4 – Injury of digital nerve of other and unspecified fingerHeader (more codes below)
S64.8 – Injury of other nerves at wrist and hand levelHeader (more codes below)
S64.9 – Injury of unspecified nerve at wrist and hand levelHeader (more codes below)

7th character values

Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).

Character	Meaning
`A`	initial encounter
`D`	subsequent encounter
`S`	sequela

Notes for S64

Code also:

any associated open wound (S61.-)

7th character note:

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

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block S60-S69

Excludes2 (not included here):

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

Frequently asked questions

What is ICD-10 code S64?

S64 is the ICD-10-CM code for injury of nerves at wrist and hand level, in the block S60-S69 (Injuries to the wrist, hand and fingers).

Is S64 a billable code?

No. S64 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.