Is S45 a billable ICD-10-CM code?

No. S45 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does S45 sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the shoulder and upper arm (S40-S49).

S45

S45 — Injury of blood vessels at shoulder and upper arm level

Non-billable headerICD-10-CM

S45 is a non-billable header ICD-10-CM code for injury of blood vessels at shoulder and upper arm level. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category S45

A: initial encounter
D: subsequent encounter
S: sequela

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

injury of subclavian artery (S25.1)
injury of subclavian vein (S25.3)

Code also

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

any associated open wound (S41.-)

Risk adjustment

S45 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead S45

6 child codes. Green means billable.

Questions about S45

Is S45 a billable ICD-10-CM code?: No. S45 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does S45 sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the shoulder and upper arm (S40-S49).