Is S02.101 a billable ICD-10-CM code?

No. S02.101 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does S02.101 sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the head (S00-S09).

S02.101

S02.101 — Fracture of base of skull, right side

Non-billable headerICD-10-CMright

S02.101 is a non-billable header ICD-10-CM code for fracture of base of skull, right side. 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 S02

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
S: sequela

Excludes2 inherited from the categories above S02.101

Also inherited, and the opposite of Excludes1: these conditions are not part of S02.101, but a patient can have both, so you may code both.

Written on S02.1 — Fracture of base of skull

lateral orbital wall (S02.84-)
medial orbital wall (S02.83-)
orbital floor (S02.3-)

Other codes that can never be billed with S02.101

These codes carry an Excludes1 note pointing at S02.101. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading S02.101 alone.

S01Open wound of head

Risk adjustment

S02.101 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 history

S02.101 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead S02.101

6 child codes. Green means billable.

Related codes at this level

Codes that share S02.10. If S02.101 is not quite right, the correct code is usually one of these.

Questions about S02.101

Is S02.101 a billable ICD-10-CM code?: No. S02.101 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does S02.101 sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the head (S00-S09).