S52.21
S52.21 — Greenstick fracture of shaft of ulna
Non-billable headerICD-10-CM
S52.21 is a non-billable header ICD-10-CM code for greenstick fracture of shaft of ulna. 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 all codes in subcategory S52.21
- A
- initial encounter for closed 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
S52.21 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 S52.21
3 child codes. Green means billable.
Related codes at this level
Codes that share S52.2. If S52.21 is not quite right, the correct code is usually one of these.
- S52.20Unspecified fracture of shaft of ulna
- S52.22Transverse fracture of shaft of ulna
- S52.23Oblique fracture of shaft of ulna
- S52.24Spiral fracture of shaft of ulna
- S52.25Comminuted fracture of shaft of ulna
- S52.26Segmental fracture of shaft of ulna
- S52.27Monteggia's fracture of ulna
- S52.28Bent bone of ulna
- S52.29Other fracture of shaft of ulna
Questions about S52.21
- Is S52.21 a billable ICD-10-CM code?
- No. S52.21 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does S52.21 sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the elbow and forearm (S50-S59).