S22.5
S22.5: Flail chest
Non-billable headerICD-10-CM
S22.5 is a non-billable header ICD-10-CM code for flail chest. 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 S22
- 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
Excludes1 inherited from the categories above S22.5
A category’s note binds every code beneath it.
Excludes2 inherited from the categories above S22.5
Not part of this code, but both may be coded when both are present.
Other codes that can never be billed with S22.5
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Alphabetic index entries that lead here
- Flail›chest
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead S22.5
6 child codes. Green means billable.
- S22.5XXAFlail chest, initial encounter for closed fracture
- S22.5XXBFlail chest, initial encounter for open fracture
- S22.5XXDFlail chest, subsequent encounter for fracture with routine healing
- S22.5XXGFlail chest, subsequent encounter for fracture with delayed healing
- S22.5XXKFlail chest, subsequent encounter for fracture with nonunion
- S22.5XXSFlail chest, sequela