S52.042

S52.042: Displaced fracture of coronoid process of left ulna

Non-billable headerICD-10-CMleft

S52.042 is a non-billable header ICD-10-CM code for displaced fracture of coronoid process of left 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 from category S52

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

Excludes1 inherited from the categories above S52.042

A category’s note binds every code beneath it.

Written on S52: Fracture of forearm

traumatic amputation of forearm (S58.-)

Excludes2 inherited from the categories above S52.042

Not part of this code, but both may be coded when both are present.

Written on S52.0: Fracture of upper end of ulna

fracture of elbow NOS (S42.40-)
fractures of shaft of ulna (S52.2-)

Written on S52: Fracture of forearm

fracture at wrist and hand level (S62.-)
periprosthetic fracture around internal prosthetic elbow joint (M97.4)

Other codes that can never be billed with S52.042

Their own Excludes1 notes name this code, so the conflict is not listed above.

M84.3Stress fracture
M84.4Pathological fracture, not elsewhere classified
S51Open wound of elbow and forearm

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead S52.042

16 child codes. Green means billable.