ICD-10-CM > M00-M99 > M97-M97 > M97 > M97.2 > M97.21 M97.21 Periprosthetic fracture around internal prosthetic right ankle joint Non-Billable/Non-Specific Codes M97.21XA..., initial encounterM97.21XD..., subsequent encounterM97.21XS..., sequela