Is S42.423B a billable ICD-10-CM code?

Yes. S42.423B is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does S42.423B 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).

S42.423B

S42.423B — Displaced comminuted supracondylar fracture without intercondylar fracture of unspecified humerus, initial encounter for open fracture

Billable / specific codeICD-10-CM

S42.423B is a billable, specific ICD-10-CM code for displaced comminuted supracondylar fracture without intercondylar fracture of unspecified humerus, initial encounter for open fracture. It is valid for submission on a claim.

7th character "B" — initial encounter for open fracture

The appropriate 7th character is to be added to all codes from category S42

A: initial encounter for closed fracture
B: initial encounter for open fracture
D: subsequent encounter for fracture with routine healing
G: subsequent encounter for fracture with delayed healing
K: subsequent encounter for fracture with nonunion
P: subsequent encounter for fracture with malunion
S: sequela

Risk adjustment

S42.423B 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.

Related codes at this level

Codes that share S42.423. If S42.423B is not quite right, the correct code is usually one of these.

Questions about S42.423B

Is S42.423B a billable ICD-10-CM code?: Yes. S42.423B is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does S42.423B 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).