M84.421SBillable
Pathological fracture, right humerus, sequela
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue
- Category
- M84
- Effective date
- October 1, 2026
Related codes in category M84
M84Disorder of continuity of boneM84.3Stress fractureM84.30Stress fracture, unspecified siteM84.30XAStress fracture, unspecified site, init encntr for fractureYesM84.30XDStress fracture, unsp site, subs for fx w routn healYesM84.30XGStress fracture, unsp site, subs for fx w delay healYesM84.30XKStress fracture, unsp site, subs for fx w nonunionYesM84.30XPStress fracture, unsp site, subs for fx w malunionYesM84.30XSStress fracture, unspecified site, sequelaYesM84.31Stress fracture, shoulderM84.311Stress fracture, right shoulderM84.311AStress fracture, right shoulder, init encntr for fractureYes
Frequently asked questions
What is ICD-10 code M84.421S?
M84.421S is an ICD-10-CM diagnosis code for Pathological fracture, right humerus, sequela.
Is M84.421S a billable code?
Yes. M84.421S is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is M84.421S in?
M84.421S falls under Chapter 13: Diseases of the musculoskeletal system and connective tissue.
When did M84.421S become effective?
M84.421S has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to M84.421S?
M84.421S belongs to category M84, 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.