S54.02 – Injury of ulnar nerve at forearm level, left arm

ICD-10-CM 2027 diagnosis code · Injuries to the elbow and forearm

Non-billable header

ICD-10-CM code S54.02

Code: S54.02 (claims format: S5402)
Description: Injury of ulnar nerve at forearm level, left 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: S50-S59 Injuries to the elbow and forearm
Parent codes: S54 › S54.0

Billable codes under S54.02

S54.02 is a header code and cannot be used on claims. Choose the most specific code:

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.

S54 – Injury of nerves at forearm level

Excludes2 (not included here):

injury of nerves at wrist and hand level (S64.-)

Code also:

any associated open wound (S51.-)

7th character note:

The appropriate 7th character is to be added to each code from category S54

S54.0 – Injury of ulnar nerve at forearm level

Applicable to:

Injury of ulnar nerve NOS

Block S50-S59

Excludes2 (not included here):

burns and corrosions (T20-T32)
frostbite (T33-T34)
injuries of wrist and hand (S60-S69)
insect bite or sting, venomous (T63.4)

Related codes in S54.0

Frequently asked questions

What is ICD-10 code S54.02?

S54.02 is the ICD-10-CM code for injury of ulnar nerve at forearm level, left arm, in the block S50-S59 (Injuries to the elbow and forearm).

Is S54.02 a billable code?

No. S54.02 is a header code with more specific child codes; report one of the billable codes listed above.

What category does S54.02 belong to?

It belongs to category S54 – Injury of nerves at forearm 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.