ICD-10-CM > M00-M99 > M15-M19 > M19 > M19.2 > M19.27 M19.27 Secondary osteoarthritis, ankle and foot Non-Billable/Non-Specific Codes M19.271Secondary osteoarthritis, right ankle and footM19.272Secondary osteoarthritis, left ankle and footM19.279Secondary osteoarthritis, unspecified ankle and foot