S42.432B vs S42.433B

S42.432B (Displaced fracture (avulsion) of lateral epicondyle of left humerus, initial encounter for open fracture) compared with S42.433B (Displaced fracture (avulsion) of lateral epicondyle of unspecified humerus, initial encounter for open fracture), from the official CMS tabular data. S42.432B and S42.433B code the same condition on opposite sides.

Relationship

Review

Laterality relationship

S42.432B

Left

Displaced fracture (avulsion) of lateral epicondyle of left humerus, initial encounter for open fracture

↔

S42.433B

Unspecified

Displaced fracture (avulsion) of lateral epicondyle of unspecified humerus, initial encounter for open fracture

Same condition; these differ only in which side is documented.

These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.

Source: ICD-10-CM tabular list (laterality variant derived from the code title)

Can these codes be reported together?

Same condition, opposite side. S42.432B and S42.433B name the same condition on opposite sides of the body.

Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.

Side by side

	S42.432BDisplaced fracture (avulsion) of lateral epicondyle of left humerus, initial encounter for open fracture	S42.433BDisplaced fracture (avulsion) of lateral epicondyle of unspecified humerus, initial encounter for open fracture
Billing status	Billable	Billable
Classification	S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)	S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)
Definition	Displaced fracture (avulsion) of lateral epicondyle of left humerus, initial encounter for open fracture is a billable ICD-10-CM diagnosis code (S42.432B).	Displaced fracture (avulsion) of lateral epicondyle of unspecified humerus, initial encounter for open fracture is a billable ICD-10-CM diagnosis code (S42.433B).
7th character	The appropriate 7th character is to be added to all codes from category S42	The appropriate 7th character is to be added to all codes from category S42
Includes	injuries of axilla injuries of scapular region	injuries of axilla injuries of scapular region

Edit this comparison Check a whole claim

Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources