S52.629K Torus fracture of lower end of unspecified ulna, subsequent encounter for fracture with nonunion
Billable ICD-10-CM code, FY2026.
Built from S52.629 with 7th character K (subsequent encounter for fracture with nonunion).
Applies from S52 Fracture of forearm
Excludes1 (never code together)
traumatic amputation of forearm (S58.-)
Excludes2 (not included here)
fracture at wrist and hand level (S62.-)
periprosthetic fracture around internal prosthetic elbow joint (M97.4)
7th character note
The appropriate 7th character is to be added to all codes from category S52
Notes
A fracture not indicated as displaced or nondisplaced should be coded to displaced
A fracture not indicated as open or closed should be coded to closed
The open fracture designations are based on the Gustilo open fracture classification
7th character required
A — initial encounter for closed fracture
B — initial encounter for open fracture type I or II
C — initial encounter for open fracture type IIIA, IIIB, or IIIC
D — subsequent encounter for closed fracture with routine healing
E — subsequent encounter for open fracture type I or II with routine healing
F — subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing
G — subsequent encounter for closed fracture with delayed healing
H — subsequent encounter for open fracture type I or II with delayed healing
J — subsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healing
K — subsequent encounter for closed fracture with nonunion
M — subsequent encounter for open fracture type I or II with nonunion
N — subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion
P — subsequent encounter for closed fracture with malunion
Q — subsequent encounter for open fracture type I or II with malunion
R — subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion
S — sequela
Applies from S52.62 Torus fracture of lower end of ulna
7th character note
The appropriate 7th character is to be added to all codes in subcategory S52.62
7th character required
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
Medicare Code Edits (MCE v43.1 (April 2026))
Unspecified code (laterality): Unspecified codes for which a more specific code identifying laterality (right, left, bilateral) exists within the same code family.
Code annotations containing back-references to S52.629K