S42.399ABillable
Other fracture of shaft of unspecified humerus, initial encounter for closed fracture
Short description: Oth fracture of shaft of unsp humerus, init for clos fx
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- S42
- Effective date
- October 1, 2026
Related codes in category S42
S42Fracture of shoulder and upper armS42.0Fracture of clavicleS42.00Fracture of unspecified part of clavicleS42.001Fracture of unspecified part of right clavicleS42.001AFracture of unsp part of right clavicle, init for clos fxYesS42.001BFracture of unsp part of right clavicle, init for opn fxYesS42.001DFx unsp part of r clavicle, subs for fx w routn healYesS42.001GFx unsp part of r clavicle, subs for fx w delay healYesS42.001KFracture of unsp part of r clavicle, subs for fx w nonunionYesS42.001PFracture of unsp part of r clavicle, subs for fx w malunionYesS42.001SFracture of unspecified part of right clavicle, sequelaYesS42.002Fracture of unspecified part of left clavicle
Frequently asked questions
What is ICD-10 code S42.399A?
S42.399A is an ICD-10-CM diagnosis code for Other fracture of shaft of unspecified humerus, initial encounter for closed fracture.
Is S42.399A a billable code?
Yes. S42.399A is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is S42.399A in?
S42.399A falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did S42.399A become effective?
S42.399A has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to S42.399A?
S42.399A belongs to category S42, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.