S64.90 – Injury of unspecified nerve at wrist and hand level of unspecified arm
ICD-10-CM 2027 diagnosis code · Injuries to the wrist, hand and fingers
- Code
S64.90(claims format:S6490)- Description
- Injury of unspecified nerve at wrist and hand level of unspecified arm
- Short description
- Injury of unsp nerve at wrist and hand level of unsp arm
- 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
- Parent codes
- S64 › S64.9
Billable codes under S64.90
S64.90 is a header code and cannot be used on claims. Choose the most specific code:
- S64.90XA – Injury of unspecified nerve at wrist and hand level of unspecified arm, initial encounterBillable
- S64.90XD – Injury of unspecified nerve at wrist and hand level of unspecified arm, subsequent encounterBillable
- S64.90XS – Injury of unspecified nerve at wrist and hand level of unspecified arm, sequelaBillable
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 inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
S64 – Injury of nerves at wrist and hand level
- any associated open wound (S61.-)
- The appropriate 7th character is to be added to each code from category S64
Block S60-S69
Related codes in S64.9
Frequently asked questions
What is ICD-10 code S64.90?
S64.90 is the ICD-10-CM code for injury of unspecified nerve at wrist and hand level of unspecified arm, in the block S60-S69 (Injuries to the wrist, hand and fingers).
Is S64.90 a billable code?
No. S64.90 is a header code with more specific child codes; report one of the billable codes listed above.
What category does S64.90 belong to?
It belongs to category S64 – Injury of nerves at wrist and hand level.
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.