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S42.431P vs S42.432P

S42.431P (Displaced fracture (avulsion) of lateral epicondyle of right humerus, subsequent encounter for fracture with malunion) compared with S42.432P (Displaced fracture (avulsion) of lateral epicondyle of left humerus, subsequent encounter for fracture with malunion), from the official CMS tabular data. S42.431P and S42.432P code the same condition on opposite sides. MedCoder-derived

Relationship

Review

Laterality relationship

S42.431P
Right
Displaced fracture (avulsion) of lateral epicondyle of right humerus, subsequent encounter for fracture with malunion
↔
S42.432P
Left
Displaced fracture (avulsion) of lateral epicondyle of left humerus, subsequent encounter for fracture with malunion

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. S42.431P and S42.432P 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

S42.431PDisplaced fracture (avulsion) of lateral epicondyle of right humerus, subsequent encounter for fracture with malunionS42.432PDisplaced fracture (avulsion) of lateral epicondyle of left humerus, subsequent encounter for fracture with malunion
Billing statusBillableBillable
ClassificationS00-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)
DefinitionDisplaced fracture (avulsion) of lateral epicondyle of right humerus, subsequent encounter for fracture with malunion is a billable ICD-10-CM diagnosis code (S42.431P).Displaced fracture (avulsion) of lateral epicondyle of left humerus, subsequent encounter for fracture with malunion is a billable ICD-10-CM diagnosis code (S42.432P).
7th characterThe appropriate 7th character is to be added to all codes from category S42The 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
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources