S01 — Open wound of head
S01 is a non-billable header ICD-10-CM code for open wound of head. 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 S01
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- open skull fracture (S02.- with 7th character B)
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.
Code also
Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.
Other codes that can never be billed with S01
These codes carry an Excludes1 note pointing at S01. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading S01 alone.
- S00Superficial injury of head
- S00.07Other superficial bite of scalp
- S00.07XAOther superficial bite of scalp, initial encounter
- S00.07XDOther superficial bite of scalp, subsequent encounter
- S00.07XSOther superficial bite of scalp, sequela
- S00.27Other superficial bite of eyelid and periocular area
- S00.37Other superficial bite of nose
- S00.37XAOther superficial bite of nose, initial encounter
Risk adjustment
S01 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 S01
8 child codes. Green means billable.
Questions about S01
- Is S01 a billable ICD-10-CM code?
- No. S01 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does S01 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).
- What cannot be coded together with S01?
- S01 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.