S42.309
⚠ Non-billable (Header)Unspecified fracture of shaft of humerus, unspecified arm
Injury, poisoning and certain other consequences of external causes (S00-T88)
⚠️ This is a category header code — not billable. Use a more specific child code below.
✅ No additional coding notes for S42.309
Child Codes (7)
S42.309AUnspecified fracture of shaft of humerus, unspecified arm, initial encounter for closed fractureS42.309BUnspecified fracture of shaft of humerus, unspecified arm, initial encounter for open fractureS42.309DUnspecified fracture of shaft of humerus, unspecified arm, subsequent encounter for fracture with routine healingS42.309GUnspecified fracture of shaft of humerus, unspecified arm, subsequent encounter for fracture with delayed healingS42.309KUnspecified fracture of shaft of humerus, unspecified arm, subsequent encounter for fracture with nonunionS42.309PUnspecified fracture of shaft of humerus, unspecified arm, subsequent encounter for fracture with malunionS42.309SUnspecified fracture of shaft of humerus, unspecified arm, sequela
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CodeS42.309
BillableNo — Header code
ParentS42.30
CategoryInjury, poisoning and certain other consequences of external causes (S00-T88)
Excludes10 rule(s)
Excludes20 note(s)
Child codes7
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)