S20.20 — Contusion of thorax, unspecified
S20.20 is a non-billable header ICD-10-CM code for contusion of thorax, unspecified. 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 S20
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Other codes that can never be billed with S20.20
These codes carry an Excludes1 note pointing at S20.20. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading S20.20 alone.
- S20.9Superficial injury of unspecified parts of thorax
Risk adjustment
S20.20 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.
How S20.20 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to S20.20.
- Contusion›thorax(wall)
Code to one of these instead S20.20
3 child codes. Green means billable.
Related codes at this level
Codes that share S20.2. If S20.20 is not quite right, the correct code is usually one of these.
Questions about S20.20
- Is S20.20 a billable ICD-10-CM code?
- No. S20.20 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does S20.20 sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the thorax (S20-S29).