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S52.042

Displaced fracture of coronoid process of left ulna

Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 11 never code together
S52.0code
Excludes2
  • fracture of elbow NOS (S42.40-)S42.40-
  • fractures of shaft of ulna (S52.2-)S52.2-
S52code
Excludes1
  • traumatic amputation of forearm (S58.-)S58.-
Excludes2
  • fracture at wrist and hand level (S62.-)S62.-
  • periprosthetic fracture around internal prosthetic elbow joint (M97.4)M97.4
S50-S59block
Excludes2
  • burns and corrosions (T20-T32)T20-T32
  • frostbite (T33-T34)T33-T34
  • injuries of wrist and hand (S60-S69)S60-S69
  • insect bite or sting, venomous (T63.4)T63.4
S00-T88chapter
Excludes2

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

7th character 16
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
Instructional notes 7
S52code
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
S52.0code
Inclusion terms
  • Fracture of proximal end of ulna
S00-T88chapter
Notes
  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Use additional code
  • code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here 1
  • Fracture, traumatic (abduction) (adduction) (separation) T14.8
Alongside this code 5 same parent — S52.04
S52.041 Displaced fracture of coronoid process of right ulna category S52.043 Displaced fracture of coronoid process of unspecified ulna category S52.044 Nondisplaced fracture of coronoid process of right ulna category S52.045 Nondisplaced fracture of coronoid process of left ulna category S52.046 Nondisp fx of coronoid process of unspecified ulna category
Subordinate codes 16
S52.042A Disp fx of coronoid process of left ulna, init for clos fx S52.042B Disp fx of coronoid pro of l ulna, init for opn fx type I/2 S52.042C Disp fx of coronoid pro of l ulna, 7thC S52.042D Disp fx of coronoid pro of l ulna, 7thD S52.042E Disp fx of coronoid pro of l ulna, 7thE S52.042F Disp fx of coronoid pro of l ulna, 7thF S52.042G Disp fx of coronoid pro of l ulna, 7thG S52.042H Disp fx of coronoid pro of l ulna, 7thH S52.042J Disp fx of coronoid pro of l ulna, 7thJ S52.042K Disp fx of coronoid pro of l ulna, 7thK S52.042M Disp fx of coronoid pro of l ulna, 7thM S52.042N Disp fx of coronoid pro of l ulna, 7thN S52.042P Disp fx of coronoid pro of l ulna, 7thP S52.042Q Disp fx of coronoid pro of l ulna, 7thQ S52.042R Disp fx of coronoid pro of l ulna, 7thR S52.042S Displaced fracture of coronoid process of left ulna, sequela
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
no
Code set
FY2026
Parent
S52.04
Block
S50-S59
Siblings
5
Subordinate
16

Present FY2024–FY2027.