M97.21Header code — not billable
Periprosthetic fracture around internal prosthetic right ankle joint
Short description: Periprosth fracture around internal prosthetic r ankle joint
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue
- Category
- M97
- Effective date
- October 1, 2026
Related codes in category M97
M97Periprosthetic fracture around internal prosthetic jointM97.0Periprosthetic fracture around internal prosthetic hip jointM97.01Periprosthetic fracture around internal prosthetic r hip jtM97.01XAPeriprosth fracture around internal prosth r hip jt, initYesM97.01XDPeriprosth fracture around internal prosth r hip jt, subsYesM97.01XSPeriprosth fracture around internal prosth r hip jt, sequelaYesM97.02Periprosthetic fracture around internal prosthetic l hip jtM97.02XAPeriprosth fracture around internal prosth l hip jt, initYesM97.02XDPeriprosth fracture around internal prosth l hip jt, subsYesM97.02XSPeriprosth fracture around internal prosth l hip jt, sequelaYesM97.1Periprosth fracture around internal prosthetic knee jointM97.11Periprosthetic fracture around internal prosthetic r knee jt
Frequently asked questions
What is ICD-10 code M97.21?
M97.21 is an ICD-10-CM diagnosis code for Periprosthetic fracture around internal prosthetic right ankle joint.
Is M97.21 a billable code?
No. M97.21 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is M97.21 in?
M97.21 falls under Chapter 13: Diseases of the musculoskeletal system and connective tissue.
When did M97.21 become effective?
M97.21 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to M97.21?
M97.21 belongs to category M97, 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.