S55.80 – Unspecified injury of other blood vessels at forearm level

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

Non-billable header

ICD-10-CM code S55.80

Code: S55.80 (claims format: S5580)
Description: Unspecified injury of other blood vessels at forearm 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: S50-S59 Injuries to the elbow and forearm
Parent codes: S55 › S55.8

Billable codes under S55.80

S55.80 is a header code and cannot be used on claims. Choose the most specific code:

S55.801 – Unspecified injury of other blood vessels at forearm level, right armHeader (more codes below)
S55.802 – Unspecified injury of other blood vessels at forearm level, left armHeader (more codes below)
S55.809 – Unspecified injury of other blood vessels at forearm level, unspecified armHeader (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 inherited from parent codes

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

S55 – Injury of blood vessels at forearm level

Excludes2 (not included here):

injury of blood vessels at wrist and hand level (S65.-)
injury of brachial vessels (S45.1-S45.2)

Code also:

any associated open wound (S51.-)

7th character note:

The appropriate 7th character is to be added to each code from category S55

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)

Index terms for S55.80

Entries in the ICD-10-CM alphabetic index that lead to this code:

Injury, blood vessel NEC, forearm, specified, site NEC

Related codes in S55.8

Frequently asked questions

What is ICD-10 code S55.80?

S55.80 is the ICD-10-CM code for unspecified injury of other blood vessels at forearm level, in the block S50-S59 (Injuries to the elbow and forearm).

Is S55.80 a billable code?

No. S55.80 is a header code with more specific child codes; report one of the billable codes listed above.

What category does S55.80 belong to?

It belongs to category S55 – Injury of blood vessels 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.