S42.43 – Fracture (avulsion) of lateral epicondyle of humerus
ICD-10-CM 2027 diagnosis code · Injuries to the shoulder and upper arm
- Code
S42.43(claims format:S4243)- Description
- Fracture (avulsion) of lateral epicondyle of humerus
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
- Block
- S40-S49 Injuries to the shoulder and upper arm
- Parent codes
- S42 › S42.4
Billable codes under S42.43
S42.43 is a header code and cannot be used on claims. Choose the most specific code:
- S42.431 – Displaced fracture (avulsion) of lateral epicondyle of right humerusHeader (more codes below)
- S42.432 – Displaced fracture (avulsion) of lateral epicondyle of left humerusHeader (more codes below)
- S42.433 – Displaced fracture (avulsion) of lateral epicondyle of unspecified humerusHeader (more codes below)
- S42.434 – Nondisplaced fracture (avulsion) of lateral epicondyle of right humerusHeader (more codes below)
- S42.435 – Nondisplaced fracture (avulsion) of lateral epicondyle of left humerusHeader (more codes below)
- S42.436 – Nondisplaced fracture (avulsion) of lateral epicondyle of unspecified humerusHeader (more codes below)
7th character values
Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).
| Character | Meaning |
|---|---|
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 |
P | subsequent encounter for fracture with malunion |
S | sequela |
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
S42 – Fracture of shoulder and upper arm
- traumatic amputation of shoulder and upper arm (S48.-)
- periprosthetic fracture around internal prosthetic shoulder joint (M97.3)
- 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 appropriate 7th character is to be added to all codes from category S42
S42.4 – Fracture of lower end of humerus
- Fracture of distal end of humerus
Block S40-S49
- injuries of axilla
- injuries of scapular region
Index terms for S42.43
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in S42.4
- S42.40 – Unspecified fracture of lower end of humerusHeader
- S42.41 – Simple supracondylar fracture without intercondylar fracture of humerusHeader
- S42.42 – Comminuted supracondylar fracture without intercondylar fracture of humerusHeader
- S42.44 – Fracture (avulsion) of medial epicondyle of humerusHeader
- S42.45 – Fracture of lateral condyle of humerusHeader
- S42.46 – Fracture of medial condyle of humerusHeader
- S42.47 – Transcondylar fracture of humerusHeader
- S42.48 – Torus fracture of lower end of humerusHeader
- S42.49 – Other fracture of lower end of humerusHeader
Frequently asked questions
What is ICD-10 code S42.43?
S42.43 is the ICD-10-CM code for fracture (avulsion) of lateral epicondyle of humerus, in the block S40-S49 (Injuries to the shoulder and upper arm).
Is S42.43 a billable code?
No. S42.43 is a header code with more specific child codes; report one of the billable codes listed above.
What category does S42.43 belong to?
It belongs to category S42 – Fracture of shoulder and upper arm.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.